The present disclosure is directed to calibrating a three-dimensional camera in X-ray imaging, and a storage medium. The techniques described include: acquiring a three-dimensional image of a calibration plate captured by a three-dimensional camera, where the calibration plate includes a positioning marker, and the calibration plate has a predetermined distance from an X-ray tube; determining first three-dimensional coordinates of the positioning marker in a three-dimensional camera coordinate system on the basis of the three-dimensional image; determining second three-dimensional coordinates of the positioning marker in an X-ray tube coordinate system on the basis of the distance; and determining, on the basis of the first three-dimensional coordinates and the second three-dimensional coordinates, a transformation matrix adapted to calibrate the three-dimensional camera. The described techniques may address the system error caused by the coordinate system difference.
Amedical X-ray imaging method is provided, including: S10: setting an imaging target region; S20: segmenting the imaging target region into a plurality of segmented regions according to first data, where the first data is a distribution of X-ray absorptivities of body parts of an examinee corresponding to the imaging target region; S30: for each of the segmented regions, generating an X-ray photographing parameter for the segmented region according to an X-ray average absorptivity of a body part of the examinee corresponding to the segmented region and according to a correspondence between X-ray average absorptivities and X-ray photographing parameters; S40: photographing a local X-ray image according to the X-ray photographing parameter corresponding to each of the segmented regions; and S50: splicing the local X-ray images corresponding to the plurality of segmented regions to form a panoramic X-ray image of the imaging target region. The medical X-ray imaging method is conducive to improving uniformity of the panoramic X-ray image. In addition, a medical X-ray imaging device is further provided.
A correction method for a scatter signal caused by a wedge filter includes: S10: performing an air scan by using CT equipment, and calculating a relative intensity Wair of a scatter signal caused by a wedge filter in the air scan according to an air scan result, S20: performing an object scan on a plurality of experimental objects by using the CT equipment, and calculating theoretical scatter signal intensities Wtheo of the experimental objects in the object scan in combination with the result of S10, S30: fitting Wtheo of the experimental objects in the object scan and scatter signal intensity estimations Wact of the experimental objects in the object scan, and S40: correcting the scan results according to a difference between a scatter signal intensity estimation Wact of an actual object in the object scan and a theoretical scatter signal intensity Wtheo of the actual object in the object scan.
G01N 23/046 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
Embodiments of the present disclosure disclose a method and system for displaying x-ray image, an x-ray machine, and a storage medium. The method includes: obtaining a captured current image of a target region; determining at least one to-be-optimized region in the current image; and for each to-be-optimized region, obtaining a maximum grayscale value and a minimum grayscale value in the to-be-optimized region, determining a window width and a window level for the to- be-optimized region according to the maximum grayscale value and the minimum grayscale value, and displaying the current image based on the window width and the window level. The technical solutions in the embodiments of the present disclosure can improve image display resolution of a current to-be-optimized region.
Method and apparatus for visualization of a touch panel to object distance (TOD) in X-ray imaging. The method includes: obtaining a three-dimensional image of a to-be-detected subject that includes an object; determining a TOD; generating a first identifier at a position of a touch panel in the three-dimensional image; and generating a second identifier in the three-dimensional image, where a distance between the first identifier and the second identifier corresponds to the TOD.
A method for determining a longitudinal position of a combined phantom, a computer readable storage medium, and a CT device. The method includes: scanning the combined phantom to obtain a topogram thereof. The combined phantom is fixed to a table top, protrudes beyond the table top, is axially parallel to the longitudinal direction, and includes a plurality of phantoms, one of which is a slice phantom. The method further includes identifying the plurality of phantoms on the topogram, and using an axial center of the slice phantom as the longitudinal position of the combined phantom. The longitudinal position is determined by using the topogram of the combined phantom, and a phantom position is aligned automatically.
A medical device undercarriage including a pair of front wheels, a pair of rear wheels, a first position sensitive detector located between the pair of front wheels, a second position sensitive detector located between the pair of rear wheels, and a controller. The controller is operable to calculate a gear ratio of the rear wheels according to a position of the first position sensitive detector and a position of the second position sensitive detector.
G16H 40/63 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for local operation
8.
METHOD AND SYSTEM FOR ASSISTING IN DETERMINING IDENTITY OF SCANNED PERSON IN CT SCANNING, AND CT SCANNER
Techniques are provided for determining an identity of a scanned person in computed tomography (CT) scanning is provided. The techniques include the use of a system for assisting in determining an identity of a scanned person in CT scanning and a CT scanner.
Techniques are disclosed for acquiring a captured target image of a target region. When it is determined that there is at least one to-be-optimized region of a bright region and/or a dark region in the target image, calculating, for each to-be-optimized region, a pixel average of the to-be-optimized region in the target image, and determining a to-be-optimized region received dose corresponding to the pixel average of the to-be-optimized region; adjusting an X-ray emission dose of an X-ray source according to a principle of making the to-be-optimized region received dose reach an X-ray reference received dose, and acquiring optimized images of the target region captured based on the X-ray emission dose adjusted to meet a requirement; and adding and synthesizing the optimized images, or adding and synthesizing the optimized images and the target image, to obtain an X-ray image of the target region.
A method for predicting a scattered signal of an X-ray for an examination object includes: scanning each phantom in a scanning manner in which a scattering degree of each phantom in a plurality of phantoms is less than a reference scattering degree, so as to obtain first projection data of each phantom; scanning each phantom in a scanning manner in which the scattering degree of each phantom in the plurality of phantoms is equal to the reference scattering degree, so as to obtain second projection data of each phantom; obtaining a real scattered signal of each phantom by subtracting the first projection data of the phantom from the second projection data of the phantom; training a learning model based on the second projection data of each phantom and the real scattered signal of each phantom to obtain a trained learning model; and applying the trained learning model to projection data of the X-ray for the examination object to predict the scattered signal of the projection data of the X-ray.
A motor control circuit includes a switch circuit powered by a power supply to drive a motor to output a motion. A switch drive circuit sends a valid drive signal to the switch circuit to drive the motor to output the motion. A limit switch is associated with a position of the motor's motion output, enabling the motor to generate a feedback signal when the motor outputs the motion to the position in a direction. The switch drive circuit receives the feedback signal to cut off power from the power supply to the switch circuit, and the motor stops outputting motion. The motor control circuit feeds from the limit switch back to a controller. When the direction of the motion output by the motor is switched, the power from the power supply to the switch circuit is turned off using the feedback signal.
H02P 7/03 - Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
H02P 3/08 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a DC motor
H02P 7/28 - Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
12.
METHOD FOR VERTICALLY POSITIONING EXAMINEE, APPRATUS FOR VERTICALLY POSITIONING EXAMINEE, AND CT SYSTEM
A method for vertically positioning an examinee may include obtaining a position of an examination table after placement of an examinee is completed; determining a measurement range that is corresponding to a to-be-examined organ and that is on the examination table; during movement of the examination table toward a scanner gantry, causing the sensor to start to measure a distance to the examinee and obtaining a height of the examination table while the sensor performs measurement; calculating an organ center height (e.g., average height) based on a measurement result of the sensor, the height of the sensor, and the height of the examination table; and adjusting the height of the examination table based on the organ center height, so that the adjusted organ center height is equal to the isocenter height of the scanner gantry to minimize a radiation dose and improve CT imaging quality.
The present disclosure relates to a method and apparatus for an X-ray imaging system, an electronic device, an X-ray imaging system, a computer-readable storage medium, and a computer program product. The X-ray imaging system includes a ray generator, a ray detector and a camera. The ray detector includes a first region for detecting X-rays. The method includes: acquiring an image collected by the camera, the image including at least an image of a to-be-detected part in the first region; determining a second region covered by the to-be-detected part in the first region of the ray detector according to the image collected by the camera; and controlling exposure of the ray generator according to a received ray amount signal in an automatic exposure control region in at least one partial region of the second region.
Disclosed are techniques for performing CT beam hardening correction. The CT beam hardening correction includes scanning a phantom to obtain measured projection data of the phantom and calculating corrected projection data of a measured object according to a calculated beam hardening correction factor, measured projection data of the measured object, a corrected projection data of the measured object, and a relationship among expected projection data of a scanned object.
The present disclosure is directed to a method and apparatus for determining a touch panel to object distance (TOD) in X-ray imaging. This includes obtaining a three-dimensional image of a to-be-detected subject that includes an object; determining a source to image distance (SID) and a touch panel to detector distance (TDD); determining, based on the three-dimensional image, a distance between a light source of a camera assembly that captures the three-dimensional image and a predetermined key point located on a surface of the to-be-detected subject, where the predetermined key point corresponds to an X-ray imaging protocol; and determining the TOD based on the SID, the TDD, and the distance between the light source and the predetermined key point. The implementations of the present disclosure implement automatic measurement of a TOD, reduce the complexity, and further improve the accuracy of the TOD.
The present application provides a braking mechanism, which includes a first support (10), a first magnet (30) and a driving unit. The first support (10) is configured to connect a first object. The first magnet (30) is movably connected to the first support (10) along a first straight line (L1). The first magnet (30) is selected from an electromagnet and an electrically-controlled permanent magnet. The driving unit is capable of driving the first magnet (30) to move along the first straight line (L1) relative to the first support (10) to enable the first magnet (30) to reciprocate between a release position and a braking position. The first magnet (30) in the braking position is configured to contact and magnetically attract a second object movable relative to the first object. The braking mechanism is conducive to effectively reducing noise generated during braking. In addition, the present application further provides a medical table including the braking mechanism.
The disclosure is directed to an automated disinfection system for a CT patient table, where the automated disinfection system for a CT patient table includes: a disinfection mechanism disposed above the CT patient table; a detection mechanism, disposed on the disinfection mechanism and configured to detect a position of the CT patient table; and a control mechanism, configured to communicate with the disinfection mechanism by using a communication interface, so as to control start/stop and operation of the disinfection mechanism, where the disinfection mechanism is configured to perform horizontal movement and vertical movement during scanning gaps of a plurality of patients, so as to disinfect a use surface of the CT patient table. The disclosure enables rapid and automated disinfection on the use surface of the CT patient table during scanning gaps of a plurality of patients, thereby reducing a risk of cross-infection and saving manpower.
The implementations of the present invention disclose a method and an apparatus for determining an exposure parameter in X-ray imaging, a storage medium, and a program product. The method includes: determining an X-ray imaging protocol and a thickness value of an imaging object; inputting the thickness value into an exposure parameter prediction model corresponding to the X-ray imaging protocol, where the exposure parameter prediction model is trained based on first training data, and the first training data includes exposure parameter historical values in historical exposure operations based on the X-ray imaging protocol and historical thickness values in the historical exposure operations; and receiving, from the exposure parameter prediction model, an exposure parameter predicted value determined based on the thickness value. In the implementations of the present invention, the exposure parameter is automatically determined according to the thickness value of the imaging object, which improves the exposure accuracy and reduces the manual difficulty. In the implementations of the present invention, the exposure parameter can be determined in a general manner independent of the adjustment operation or in a dedicated manner related to the adjustment operation, and the automatic determination of the thickness value is further implemented.
tar gettar getoptimaloptimal of the collimator slot according to the first deviation ΔZ.The present invention can quickly and precisely determine the position of the collimator slot.
The present invention provides a monitoring video generation method applicable to a CT machine, including: acquiring a plurality of primary videos including a monitored target, determining a keyframe according to a region in an initial frame of each primary video surrounding the monitored target, and determining a bounding box surrounding the monitored target in the keyframe; determining, for each primary video, a bounding box surrounding the monitored target in each subsequent frame; and selecting, for each frame moment from the frames of the plurality of primary videos, a frame in which the region of the monitored target within the bounding box has a largest area as the keyframe, and generating a monitoring video in real time according to a part of each selected keyframe located within the bounding box. The monitoring video generation method can facilitate observation of a patient from a plurality of angles in a monitoring video. The present invention further provides a monitoring video generation system.
The present invention provides an annotation task management method. The method includes: during start of an annotation task, creating a plurality of subtasks of the annotation task, where each of the subtasks has a task name for differentiation from other subtasks, and then setting activation logic of the plurality of subtasks, an execution permission required for starting each of the subtasks, and an execution permission of each user role; searching for an execution permission corresponding to a user role that has logged in according to the user role; displaying a task name of an activated subtask corresponding to the found execution permission for a user to start the subtask; and providing to-be-processed data to the user after the user starts the subtask. The annotation task management method helps accurately, efficiently, and universally manage annotation tasks. An annotation task management system is further provided.
The disclosure provides a medical imaging device, including: a sliding seat, a bracket, a column and an X-ray tube assembly. The sliding seat is fixedly arranged on a bed of the medical imaging device, and the sliding seat has a slideway extending along a length direction of the bed. The bracket is provided with a moving component and a restraining member. The moving component moves along the slideway, and the restraining member is fitted with the sliding seat to limit a displacement of the bracket in a width direction of the bed. The column is vertically arranged on the bracket. The X-ray tube assembly is arranged on the column. In this way, the sliding seat that provides the slideway for the column to slide is integrated on the bed. During the alignment of the medical imaging device, it is only required to make the bed horizontal, which simplifies the alignment process.
The present invention discloses a CT support, a CT gantry, and a CT device. The CT support includes a base plate, a post, and a panel. An open space is provided between the panel and at least one of the base plate and the post. At least one air outlet is provided on at least one of two sides of the panel. The post has at least one first vent opening. A channel is provided between the panel and the post. The panel has a fan mounting interface, the open space, the fan mounting interface, the panel, and the air outlet form a first airway, and the open space, the fan mounting interface, the panel, the channel, the post, and the first vent opening form a second airway.
A rotary braking mechanism is disclosed, including a pedestal (10), an operating shaft (20), a disc cam (30), a lever (40), and a braking member (50). The pedestal is configured to be fixedly connected to a first component. The operating shaft is rotatably connected to the pedestal around a first axis (LI) or threadedly connected to the pedestal by using the first axis as a thread axis. The disc cam is connected to the operating shaft. An axis of the disc cam coincides with the first axis. The lever is rotatably connected to the pedestal. A rotation axis of the lever is parallel to the first axis and eccentrically arranged with the first axis. The lever has a power portion (41) and a load portion (42) that deviate from the rotation axis of the lever. A cam surface of the disc cam abuts against the power portion, to drive the lever to rotate by a motion of the disc cam. The lever is rotatable to make the load portion drive the braking member to move or deform, so that the braking member presses against the second component. The rotary braking mechanism has a simple structure, which is conducive to saving space. A C-arm X-ray machine and a monitor bracket of the C-arm X-ray machine are further disclosed.
F16D 49/04 - Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as a helical band or coil with more than one turn, with or without intensification of the braking force by the tension of the band or contracting member mechanically actuated
F16D 49/10 - Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as an encircling band extending over approximately 360° mechanically actuated
A61B 6/00 - Apparatus or devices for radiation diagnosisApparatus or devices for radiation diagnosis combined with radiation therapy equipment
F16M 11/00 - Stands or trestles as supports for apparatus or articles placed thereon
25.
X-RAY IMAGE ACQUISITION METHOD AND SYSTEM, X-RAY DEVICE AND STORAGE MEDIUM
An embodiment of the disclosure discloses an X-ray image acquisition method and system, an X-ray device and a storage medium. The method includes: acquiring a present image captured based on a present exposure parameter; computing a contrast of the present image, and taking the obtained contrast as a maximum contrast; adjusting the present exposure parameter according to a principle that the contrast is increased while the dose is not changed within a parameter range of a high-voltage generator; acquiring the present image captured based on the present exposure parameter; computing the contrast of the present image, and comparing the obtained contrast with the maximum contrast; taking the contrast as the maximum contrast if the contrast is greater than the maximum contrast, and returning to the operation of adjusting the present exposure parameter; and otherwise, taking the present image as a captured X-ray image. According to the technical solution in the embodiment of the disclosure, the imaging quality of the image can be improved.
The invention discloses a dual source CT machine and a drum therefor. The drum is mounted to an outer rim of a bearing, and an inner rim of the bearing is mounted to a gantry of the dual source CT machine. The drum includes: a ring-shaped front drum, where the ring-shaped front drum has a first side surface and a second side surface opposite to each other, a first system mounting area and a second system mounting area are arranged on the first side surface, and a front flange extending in an axial direction from an inner ring edge of the front drum is formed on the second side surface; and a ring-shaped rear drum, where the rear drum has a first side surface and a second side surface opposite to each other, a first component mounting area and a second component mounting area are arranged on the first side surface, and a rear flange extending in the axial direction from an inner ring edge of the rear drum is formed on the second side surface. The front drum and the rear drum are arranged coaxially, and the front flange and the rear flange face each other. The front drum is connected to the bearing through the front flange, and the rear drum is connected to the bearing through the rear flange. The drum of the invention can improve the scanning efficiency and realize clearer scanned images.
A power supply system for a medical X-ray imaging device includes a power connector (10), a first power supply connector (21), a battery module (30) and a second power supply connector (22). The power connector is configured to be connected to a power grid. The first power supply connector is connected to the power connector. The first power supply connector is configured to be connected to a first-class electrical component of the medical X-ray imaging device. The battery module is connected to the power connector. The battery module is provided with a storage battery (31). The battery module is configured to acquire electric energy from the power grid through the power connector to charge the storage battery. The second power supply connector is connected to the battery module. The second power supply connector is configured to be connected to a second-class electrical component of the medical X-ray imaging device. The battery module is configured to connect any one of the power connector and the storage battery to the second power supply connector in a switchable mode. The power supply system can efficiently reduce the time for reconnecting the medical X-ray imaging device to a power supply to recover to a normal working state. In addition, the medical X-ray imaging device is also provided.
A target position determination of a single-slot collimating plate and a collimator assembly are disclosed. A first measurement signal is acquired based upon of the first instance of air scanning, when the single-slot collimating plate moves a predetermined distance from a starting position to a first position in a first direction of the Z axis. A second measurement signal is acquired based upon the second instance of air scanning, when the single-slot collimating plate moves a predetermined distance from the starting position to a second position in the direction opposite to the first direction. A composite measurement signal and a composite air calibration signal are determined based upon the first measurement signal and the second measurement signal. The composite measurement signal is calibrated using the composite air calibration signal. The target position of the single-slot collimating plate is determined based upon the calibrated composite measurement signal.
Disclosed in the utility model are a data transmission quality indication apparatus for a medical device and a related medical device. The data transmission quality indication apparatus for a medical device includes: a parameter obtaining unit, configured to obtain values of a plurality of parameters related to data transmission quality; a score calculation unit, configured to calculate, according to the values of the plurality of parameters, a score indicating the data transmission quality; and a display unit, configured to display a graphical object associated with the score. According to the data transmission quality indication apparatus for a medical device and the related medical device provided in the utility model, a score indicating data transmission quality is calculated based on an existing log file, and a healthy status is defined and displayed, making it convenient for customer service, research and development, and a customer to know the data transmission quality and the healthy status.
H04L 67/12 - Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
A61B 6/00 - Apparatus or devices for radiation diagnosisApparatus or devices for radiation diagnosis combined with radiation therapy equipment
30.
METHOD AND APPARATUS FOR CALIBRATING THREE-DIMENSIONAL CAMERA IN X-RAY IMAGING, AND STORAGE MEDIUM
Embodiments of the present disclosure provide a method and apparatus for calibrating a three-dimensional camera in X-ray imaging, and a storage medium. The method includes: acquiring a three-dimensional image of a calibration plate captured by a three-dimensional camera, where the calibration plate includes a positioning marker, and the calibration plate has a predetermined distance from an X-ray tube; determining first three-dimensional coordinates of the positioning marker in a three-dimensional camera coordinate system on the basis of the three-dimensional image; determining second three-dimensional coordinates of the positioning marker in an X-ray tube coordinate system on the basis of the distance; and determining, on the basis of the first three-dimensional coordinates and the second three-dimensional coordinates, a transformation matrix adapted to calibrate the three-dimensional camera. The embodiments of the present disclosure can overcome the system error caused by the coordinate system difference.
A bucky tray of a bucky, including a tray body (10), connection bases (20), and moving limit assemblies (30). Each connection base is disposed on the tray body and includes fastening portions (21). Each fastening portion includes a plurality of fastening holes (23). The plurality of fastening holes are distributed in an adjustment direction (F2), and the adjustment direction is perpendicular to a thickness direction (Fl) of the tray body. Each moving limit assembly includes a first seat (31), a moving limit block (32), and fastening members (33). The first seat is movably disposed on the connection base in the adjustment direction. The moving limit block is movably connected to the first seat in the thickness direction and configured to abut against a flat-panel detector carried on the bucky tray in the adjustment direction. Each fastening member is fixedly connected to the moving limit block and capable of being inserted into any of the fastening holes of the fastening portion in the thickness direction. The bucky tray facilitates adjustment of the placement attitude of the flat-panel detector or replacement with a flat-panel detector of a different model. In addition, a bucky is also provided.
The present disclosure relates to a height compensation system for a patient table, including: a light reflection block (102), disposed on a gantry side of a medical device, and configured to reflect a received optical signal; a photoelectric detector (103), disposed on the patient table (S) opposite to the light reflection block (102), and configured to emit an optical signal outward and detect a reflected signal of the optical signal; and a controller (104), communicably connected to the photoelectric detector (103), and configured to control, when the photoelectric detector (103) detects a reflected signal reflected by the light reflection block (102), the patient table (S) to move upward in a vertical direction, until the photoelectric detector (103) does not detect the reflected signal reflected by the light reflection block (102).
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
A61B 6/04 - Positioning of patientsTiltable beds or the like
A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
33.
Medical bed horizontal driving mechanism and medical bed horizontal driving system, and medical bed
A medical bed horizontal driving mechanism includes a bracket, a drum, an electric motor, and a position sensor. The bracket is configured to be fixedly connected to a bed frame of a medical bed. The drum is rotatably connected to the bracket. The drum is rotatable to drive a bed board of the medical bed to move relative to the bed frame. The electric motor is arranged in a cavity of the drum. A housing of the electric motor is fixedly connected to the bracket. An output shaft of the electric motor is connected to the drum to drive the drum to rotate relative to the bracket. The position sensor is arranged in the cavity of the drum. The position sensor can detect a rotational position of the drum and generate a position signal, which is used to control the electric motor.
Embodiments of the present invention disclose a focus switching method and system for an X-ray tube, and an X-ray machine. The X-ray tube includes a small filament corresponding to a small focus and a large filament corresponding to a large focus. The switching method includes: determining a corresponding fluoro curve according to a current organ program, where for a specified organ program, a fluoro curve corresponding to the small focus and a fluoro curve corresponding to the large focus are combined into one fluoro curve; and determining a tube voltage, a tube current, and an exposure time of a current X-ray tube according to a current dose control value and the fluoro curve, determining a current fluoro power according to the tube voltage and the tube current, if the current fluoro power is in a power range of the small filament, controlling the small filament to work, and if the current fluoro power is in a power range of the large filament, controlling the large filament to work. The technical solutions in the embodiments of the present invention can implement automatic focus switching.
airtheotheoactacttheotheo of the actual object in the object scan. The method can correct a scatter signal caused by a wedge filter more accurately. The present invention further provides a storage medium.
Embodiments of the present invention disclose a method and system for displaying x-ray image, an x-ray machine, and a storage medium. The method includes: obtaining a captured current image of a target region; determining at least one to-be-optimized region in the current image; and for each to-be-optimized region, obtaining a maximum grayscale value and a minimum grayscale value in the to-be-optimized region, determining a window width and a window level for the to-be-optimized region according to the maximum grayscale value and the minimum grayscale value, and displaying the current image based on the window width and the window level. The technical solutions in the embodiments of the present invention can improve image display resolution of a current to-be-optimized region.
Implementations of the present invention disclose a method and apparatus for determining a touch panel to object distance (TOD) in X-ray imaging. The method includes: obtaining a three-dimensional image of a to-be-detected subject that includes an object; determining a source to image distance (SID) and a touch panel to detector distance (TDD); determining, based on the three-dimensional image, a distance between a light source of a camera assembly that captures the three-dimensional image and a predetermined key point located on a surface of the to-be-detected subject, where the predetermined key point corresponds to an X-ray imaging protocol; and determining the TOD based on the SID, the TDD, and the distance between the light source and the predetermined key point. The implementations of the present invention implement automatic measurement of a TOD, reduce the complexity, and further improve the accuracy of the TOD.
Implementations of the present invention disclose a method and apparatus for visualization of a touch panel to object distance (TOD) in X-ray imaging. The method includes: obtaining a three-dimensional image of a to-be-detected subject that includes an object; determining a TOD; generating a first identifier at a position of a touch panel in the three-dimensional image; and generating a second identifier in the three-dimensional image, where a distance between the first identifier and the second identifier corresponds to the TOD. The implementations of the present invention implement intuitive display of a TOD and further facilitate the adjustment of the TOD.
A guidance method for disinfection of a CT scan room is provided, including the following steps: capturing video information of the entire scan room when a person to be scanned is in the CT scan room; analyzing the video information by using motion capture technology to generate movement data of the person to be scanned in the scan room; and generating a visualized image marked with an activity area of the person to be scanned in the scan room according to the movement data. The guidance method for disinfection of a CT scan room provided by the present invention can guide disinfection personnel to disinfect the scan room in a targeted manner, saving time and efforts. The present invention further provides a guidance system utilizing the above guidance method for disinfection of a CT scan room.
The method for assisting in determining an identity of a scanned person in CT scanning is provided, including: obtaining identity information of a scanned person; collecting facial image information of the scanned person after the scanned person is positioned and determining whether the scanned person is a match based on the identity information of the scanned person by using a facial recognition algorithm; performing a voice dialogue with the scanned person based on the identity information of the scanned person by using natural language processing technology after the scanned person is positioned, and determining whether the scanned person is a match; and if either of determining results of the above determining is a mismatch, sending a reminder of determining the identity of the scanned person to an operator. If both determining results of the above determining are matching, a scan is started. The method for assisting in determining an identity of a scanned person in CT scanning can assist an operator in determining the identity of the scanned person. The present invention further provides a system using the above method for assisting in determining an identity of a scanned person in CT scanning, and a CT scanner.
The present invention discloses a method for determining a longitudinal position of a combined phantom, a computer readable storage medium, and a CT device. The method includes: scanning the combined phantom to obtain a topogram thereof, the combined phantom being fixed to a table top and protruding beyond the table top, the combined phantom being axially parallel to the longitudinal direction, the combined phantom including a plurality of phantoms and one of which being a slice phantom; identifying the plurality of phantoms on the topogram; and using an axial center of the slice phantom as the longitudinal position of the combined phantom. According to the method for determining a longitudinal position of a combined phantom, the computer readable storage medium, and the CT device in the present invention, the longitudinal position is determined by using the topogram of the combined phantom, and a phantom position can be quickly and automatically aligned.
Embodiments of the present invention disclose an X-ray image acquisition method and system, an X-ray machine, and a storage medium. The method includes: acquiring a captured target image of a target region; when it is determined that there is at least one to-be-optimized region of a bright region and/or a dark region in the target image, calculating, for each to-be-optimized region, a pixel average of the to-be-optimized region in the target image, and determining a to-be-optimized region received dose corresponding to the pixel average of the to-be-optimized region; adjusting an X-ray emission dose of an X-ray source according to a principle of making the to-be-optimized region received dose reach an X-ray reference received dose, and acquiring optimized images of the target region captured based on the X-ray emission dose adjustedto meet a requirement; and adding and synthesizing the optimized images, or adding and synthesizing the optimized images and the target image, to obtain an X-ray image of the target region. Through the technical solutions in the embodiments of the present invention, X-ray images that meet the imaging quality requirement can be obtained.
Disclosed are a CT beam hardening correction method, a CT beam hardening correction device, and a storage medium. The CT beam hardening correction method includes: scanning a phantom to obtain measured projection data of the phantom; calculating estimated theoretical projection data of the phantom based on an initial estimated position of the phantom by using a theoretical projection data calculation model; calculating an actual position of the phantom based on the measured projection data and the estimated theoretical projection data of the phantom; calculating actual theoretical projection data of the phantom by using the theoretical projection data calculation model according to the actual position; calculating a beam hardening correction factor according to a relationship among expected projection data of a scanned object, measured projection data of the scanned object, and a beam hardening correction factor, the actual theoretical projection data of the phantom, and measured projection data of the phantom; and calculating corrected projection data of a measured object according to the calculated beam hardening correction factor, measured projection data of the measured object, corrected projection data of the measured object, and the relationship.
The present invention discloses a medical device undercarriage and a medical device system. The medical device undercarriage includes a pair of front wheels, a pair of rear wheels, a first position sensitive detector located between the pair of front wheels, a second position sensitive detector located between the pair of rear wheels, and a controller. The controller calculates a gear ratio of the rear wheels according to a position of the first position sensitive detector and a position of the second position sensitive detector. For the medical device undercarriage and system of the present invention, no track is required to control motion, and no absolutely flat ground is required. The medical device undercarriage and system can be used on a relatively flat ground, have low costs, and are slightly environment-dependent.
This application relates to a method for vertically positioning an examinee, an apparatus for vertically positioning an examinee, and a CT system. The method includes: obtaining a position of an examination table after placement of an examinee is completed; determining a measurement range that is corresponding to a to-be-examined organ and that is on the examination table, where the measurement range includes a start point and an end point in the horizontal direction; during movement of the examination table toward a scanner gantry, when the start point reaches a measurement position of a sensor attached to the scanner gantry, causing the sensor to start to measure a distance to the examinee, and when the end point reaches the measurement position, stopping measurement, and obtaining a height of the examination table while the sensor performs measurement; calculating an organ center height based on a measurement result of the sensor, the height of the sensor, and the height of the examination table, where the height represents an average height of the organ in the vertical direction; and adjusting the height of the examination table based on the organ center height, so that the adjusted organ center height is equal to the isocenter height of the scanner gantry, so as to minimize a radiation dose to the examinee and improve CT imaging quality.
The present invention provides an image magnification method and system for X-ray medical equipment, and a storage medium. According to an implementation, the image magnification method for X-ray medical equipment provided in the present invention includes: selecting a point of interest on an X-ray image of an imaging object obtained by X-ray medical equipment; determining a region of interest based on the point of interest according to a predetermined rule; and clipping the region of interest from the X-ray image and displaying the region of interest. The present invention not only facilitates the operation of the operator and prevents an inspection object from being exposed to a high radiation dose, but also avoids a pixel loss of the image and realizes the lossless digital magnification of the image of the region of interest.
The present disclosure relates to a motor control circuit, including: a switch circuit section, powered by a power supply to drive a motor to output a motion; a switch drive circuit section, capable of sending a drive signal in a valid state to the switch circuit section, to enable the switch circuit section to drive the motor to output the motion; and a limit switch section, including at least one limit switch that is associated with at least one position of the motion outputted by the motor, to enable the motor to generate a feedback signal when the motor outputs the motion to the position in a direction, and the feedback signal is received by the switch drive circuit section, so that the switch drive circuit section cuts off power from the power supply to the switch circuit section, and the motor stops outputting. The motor control circuit provides a mechanism for feeding from the limit switch back to a controller, and when the direction of the motion outputted by the motor is switched, the power from the power supply to the switch circuit section is turned off by using the feedback signal, resolving problems of electromagnetic interference and sparks generated by turning off the power supply of the motor with simplicity and higher security.
H02P 3/08 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a DC motor
H02P 3/10 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a DC motor by reversal of supply connections
H02P 7/03 - Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
A61B 17/00 - Surgical instruments, devices or methods
48.
AUTOMATED DISINFECTION SYSTEM FOR CT PATIENT TABLE
The utility model discloses an automated disinfection system for a CT patient table, where the automated disinfection system for a CT patient table includes: a disinfection mechanism disposed above the CT patient table; a detection mechanism, disposed on the disinfection mechanism and configured to detect a position of the CT patient table; and a control mechanism, configured to communicate with the disinfection mechanism by using a communication interface, so as to control start/stop and operation of the disinfection mechanism, where the disinfection mechanism is configured to perform horizontal movement and vertical movement during scanning gaps of a plurality of patients, so as to disinfect a use surface of the CT patient table. The utility model enables rapid and automated disinfection on the use surface of the CT patient table during scanning gaps of a plurality of patients, thereby reducing a risk of cross-infection and saving manpower.
Implementations of the present application disclose an imaging workstation of a C-arm X-ray machine and a C-arm X-ray machine. The imaging workstation includes a display and a display holder, and further includes: a communication module, adapted to receive system status information of a C-arm main unit; and a light-emitting assembly, mounted on the display or the display holder, or mounted on the display and the display holder, wherein light-emitting status of the light-emitting assembly corresponds to the system status information. The implementations of the present application help users to learn the system status of the C-arm main unit.
This application relates to a method and an apparatus for predicting a scattered signal of an X-ray, and a method for correcting a scattered beam. A method for predicting a scattered signal of an X-ray for an examination object includes: scanning each phantom in a scanning manner in which a scattering degree of each phantom in a plurality of phantoms is less than a reference scattering degree, so as to obtain first projection data of each phantom; scanning each phantom in a scanning manner in which the scattering degree of each phantom in the plurality of phantoms is equal to the reference scattering degree, so as to obtain second projection data of each phantom; obtaining a real scattered signal of each phantom by subtracting the first projection data of the phantom from the second projection data of the phantom; training a learning model based on the second projection data of each phantom and the real scattered signal of each phantom to obtain a trained learning model; and applying the trained learning model to projection data of the X-ray for the examination object to predict the scattered signal of the projection data of the X-ray.
The present invention provides a power source control module for dual computers, a power source control system for dual computers, and medical imaging equipment. The power source control module for dual computers includes: a power source control circuit for a primary computer, configured to: when detecting a voltage output in either of a power input end and a port of the primary computer, electrically connect the primary computer to an uninterruptible power supply (UPS) to power on the primary computer, and when detecting no voltage output in both the power input end and the port of the primary computer, electrically disconnect the primary computer from the UPS to power off the primary computer; and a power source control circuit for a secondary computer, configured to: when a first condition is satisfied, electrically connect the secondary computer to the UPS to power on the secondary computer, and when the first condition is not satisfied, electrically disconnect the secondary computer from the UPS to power off the secondary computer, where the first condition is that there is a voltage output in both the power input end and the port of the primary computer and that the primary computer is electrically connected to the UPS. The present invention can make the secondary computer properly run a startup or shutdown command.
G06F 1/26 - Power supply means, e.g. regulation thereof
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
52.
METHOD, APPARATUS, AND SYSTEM FOR GENERATING MEDICAL COMBINATION IMAGE, AND STORAGE MEDIUM
Implementations of the present invention provide a method, an apparatus, and a system for generating a medical combination image, and a storage medium. The method includes: obtaining a medical image generated by performing medical imaging on a to-be-imaged object by using a medical imaging system; obtaining a three-dimensional image generated by photographing the to-be-imaged object by using a photographing assembly; generating, based on the three-dimensional image, a two-dimensional image of the to-be-imaged object being transformed to be at a predetermined angle; and generating a medical combination image including the medical image and the two-dimensional image. The medical combination image not only includes the medical image generated by imaging, but also includes the two-dimensional image transformed from the photographed three-dimensional image. The medical combination image enriches information content, and facilitates mastering of more information of the to-be-imaged object in multiple dimensions by a viewer. The medical combination image further includes tag information, thereby having a prompt effect with a distinctive feature, and not interfering presentation of the to-be-imaged object.
Disclosed is a medical bed horizontal driving mechanism, which comprises a support (10), a roller (20), an electric motor (30) and a position sensor (41). The support (10) is used for being fixedly connected to a bed frame (91) of a medical bed, the roller (20) is rotatably connected to the support (10), the roller (20) can rotate to drive a bed board (92) of the medical bed to move relative to the bed frame (91), the electric motor (30) is arranged in a roller cavity of the roller (20), a shell of the electric motor (30) is fixedly connected to the support (10), an output shaft (31) of the electric motor is connected to the roller (20) so as to drive the roller (20) to rotate relative to the support (10), the position sensor (41) is arranged in the roller cavity of the roller (20), and the position sensor (41) is capable of detecting the rotation position of the roller (20) and generating a position signal, the position signal being used for controlling the electric motor (30). The medical bed horizontal driving mechanism is convenient to install and maintain, and facilitates the saving of space. In addition, further provided are a medical bed horizontal driving system comprising the medical bed horizontal driving mechanism, and the medical bed.
A method (100) and device (800) for determining a target position of a single-slot collimating plate (23), and a collimator assembly (20, 30). The method (100) comprises: acquiring a first measurement signal, acquired on the basis of the first instance of air scanning, when the single-slot collimating plate (23) moves a predetermined distance from a starting position to a first position in a first direction of the Z axis (101); acquiring a second measurement signal, acquired on the basis of the second instance of air scanning, when the single-slot collimating plate (23) moves a predetermined distance from the starting position to a second position in the direction opposite to the first direction (102); on the basis of the first measurement signal and the second measurement signal, determining a composite measurement signal and a composite air calibration signal (103); calibrating the composite measurement signal by using the composite air calibration signal (104); and on the basis of the calibrated composite measurement signal, determining the target position of the single-slot collimating plate (23) (105). The target position of the single-slot collimating plate (23) can be determined by means of two instances of air scanning. The method is simple and convenient.
A chest stand assembly (10), an examination table assembly (20) and an X-ray machine control module (100). The chest stand assembly (10) comprises: a column (11); a magazine assembly (12), slidably arranged on the column(11); and a distance sensor (14), arranged at an end of the column(11) and used for detecting examination subject height information. The chest stand assembly (10) and the examination table assembly (20) are capable of detecting examination subject parameters， thereby making a physical examination process more convenient and avoiding errors which might be caused by manual adjustment of exposure parameters， so can improve medical imaging quality.
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