687results about "Radiation diagnostic device control" patented technology

Systems and methods for performing one or more medical imaging analysis tasks on PCCT (photon-counting computed tomography) images are provided. Image acquisition parameters of a PCCT image acquisition device are determined for acquiring PCCT images. One or more PCCT images of an anatomical object of a patient acquired using the PCCT image acquisition device configured with the image acquisition parameters are received. One or more medical imaging analysis tasks analyzing the anatomical object are performed based on the one or more PCCT images using one or more machine learning based models. Results of the one or more medical imaging analysis tasks are output.

The invention discloses an X-ray machine inspection parameter automatic configuration system for pet inspection, and relates to the technical field of medical imaging equipment, a displacement prediction model is used for pre-judging a pet convulsion state before exposure, a dynamic exposure trigger is only activated in a stable interval, and motion blur is avoided from the source; compared with the scheme of relying on post-exposure image feedback adjustment in the prior art, invalid radiation and repeated exposure operation can be avoided; the partition parameter mapping module is combined with a species feature database to map the gray level of the preview image into equivalent thickness and independently generate region parameters; aiming at extreme body type difference, such as an abdominal fat layer of an obese dog and a rib region of an emaciated cat, the system automatically distributes differentiated kV / mA parameters, and the problem of overexposure or underexposure caused by a traditional fixed penetration rate standard is eliminated; and the radiation fusing unit monitors the accumulated dose in real time, dynamically adjusts a safety threshold according to the weight of the pet, and stops exposure before the dose exceeds the limit.

Provided in the present application are an image stitching method for an X-ray imaging system, an X-ray imaging method, and X-ray imaging systems. The X-ray imaging system includes an X-ray source, and the image stitching method includes dividing an imaging region of a subject under examination into a first region and a second region, the first region and the second region having an overlapping portion; acquiring a first quantity of X-ray images of the subject under examination by rotating the X-ray source in the first region; acquiring a second quantity of X-ray images of the subject under examination by translating the X-ray source in the second region; and performing image stitching on the first quantity of X-ray images and the second quantity of X-ray images to acquire a medical image of the subject under examination.

A system configured to reduce scatter radiation around a surgical table during a medical procedure that may include at least one radiation shield configured to be connected to a surgical table with an attachment mechanism, wherein the at least one radiation shield includes one or more adjustable radiation shield segments coupled or releasably coupled to the at least one radiation shield. A device may include a pump in fluid communication with the one or more adjustable radiation shield segments comprising a pneumatic channel that is configured to at least partially inflate the pneumatic channel such that at least a first portion of the at least one radiation shield extends vertically above at least a portion of the surgical table, wherein a second portion of radiation shield is configured to extend below the surgical table. A device may include a controller configured to activate the pump.

The invention discloses a medical CT (Computed Tomography) communication method for high-precision synchronization of multi-source data and a CT system. Wherein the rotary control unit and the fixed control unit are connected with each other through a private wireless link, take an FPGA / MCU platform as a core, and realize microsecond-level synchronization by utilizing a unified clock source, a hardware timestamp and round-trip delay correction; during scanning, the fixing unit returns multi-source data such as bed codes, electrocardio and high-voltage parameters in real time, and the rotating unit fits and triggers instantaneous bed information based on cached data and sends the instantaneous bed information to the image reconstruction unit after the instantaneous bed information is strictly aligned with detector data. According to the scheme, traditional high-voltage cables and drag chains are replaced, hidden dangers of insulation aging, mechanical abrasion and data interruption are eliminated, and the fault rate is remarkably reduced; meanwhile, motion artifacts are inhibited, and the image definition and real-time performance are improved. Protocol multiplexing and dynamic bandwidth allocation further reduce delay and bit error rate, and support seamless expansion of subsequent modules.

The present disclosure relates to a method for imaging and an imaging system. The method includes obtaining a scanning protocol for an examination subject, which includes: obtaining calibration data associated with the scanning protocol in response to a commonly used scanning protocol calibration data set of a medical imaging system including the calibration data; or performing a calibration operation in response to a commonly used scanning protocol calibration data set of a medical imaging system not including calibration data associated with the scanning protocol, to generate calibration data associated with the scanning protocol. The method further includes scanning the examination subject based on the scanning protocol, to obtain raw imaging data, and performing reconstruction using the calibration data associated with the scanning protocol and the raw imaging data, to obtain a medical image of a scanned subject.

A dental X-ray imaging system (100) comprises: a dental X-ray imaging unit (102) having an X-ray source part (114), an X-ray imaging detector part (116) with an X-ray detector, and a gantry part (112) for the X-ray source part (114) and the X-ray imaging detector part (116); and a control system (106). The control system (106) controls the parts of the dental X-ray imaging unit (102) to acquire an X-ray scout image (302) of the patient (300) by using a first, larger part of an active area of the X-ray detector, and to acquire panoramic dental X-ray image data of the patient (300) by using a second, smaller part of the active area of the X-ray detector being respective to the panoramic imaging. A method for a panoramic dental X-ray imaging of a patient (300), a computer program (714), and a tangible non-volatile computer-readable medium are also disclosed.

Embodiments of the present disclosure may provide a system, a method, and a device for X-ray imaging. The method may include: obtaining a grayscale of a current frame of an object, wherein the current frame is obtained by performing X-ray imaging on the object based on current performing parameters; determining an updated equivalent phantom thickness of the object based on the grayscale of the current frame, the current performing parameters, and a pre-stored correspondence, wherein the pre-stored correspondence reflects dose values corresponding to a plurality of equivalent phantom thicknesses and a plurality of performing parameters; and determining target performing parameters of a next frame of the object based on the updated equivalent phantom thickness, a target grayscale, and the pre-stored correspondence.

The invention discloses an intelligent linkage system of radiographic inspection equipment and a protection device. The intelligent linkage system comprises an image recognition module, a controller and a driving and protection structure. The image recognition module captures an image of a detected person and position change information of radiographic inspection equipment and transmits the information to the controller; the controller calculates the height of a detected person, a detection part and an equipment position through a convolutional neural network algorithm, determines a target protection position and generates a motor driving instruction; the driving and protection structure drives the protection part to the target position according to the instruction. According to the system, machinery and artificial intelligence are combined, the system can automatically adapt to different crowds, automatic radiation protection of DR and CT examination is achieved, the protection standardization and the working efficiency are improved, and the radiation risk is reduced.

Methods and systems are provided for adaptively configuring time delays between scans of a scan sequence performed using an imaging system, to maintain a temperature of components of an X-ray tube of the imaging system within a threshold temperature. A software tool is provided that allows a user to import, modify, and / or create scan sequence protocols (e.g., such as image quality (IQ) protocols) using a dedicated graphical user interface (GUI). The software tool parses the scan sequence protocols, using a thermal physics model of the X-ray tube to calculate a plurality of adaptive delays to be inserted between each scan of the scan sequence, such that all the components of the tube stay within predefined thermal limits for robust IQ or within a thermal range typical of a clinical site's thermal operating range. Each adaptive delay may be of a different length of time.

The invention provides an imaging method, device and equipment of an interventional instrument. The imaging method comprises the following steps: acquiring a movement track and a current position of the interventional instrument in an interventional environment; according to the motion trail and the current position, a local scanning visual field area of the imaging equipment is determined, and the local scanning visual field area at least comprises an expected advancing path of the interventional instrument; and imaging the interventional instrument according to the local scanning view area to obtain a local image of the interventional instrument. The radiation quantity in the imaging process of the interventional instrument is reduced, and the imaging accuracy is improved.

Provided are an X-ray imaging device comprising a camera and a method for operating same. The X-ray imaging device may input an image obtained by using a camera to an artificial intelligence model, thereby recognizing and tracking a portable X-ray detector from the image, and may perform an operation according to an auto tracking function of the portable X-ray detector for automatically moving the position of an X-ray tube such that the focal spot of an X-ray irradiation region is aligned on the central region of the portable X-ray detector.

Provided herein is technology relating to radiology and radiotherapy and particularly, but not exclusively, to apparatuses, methods, and systems for multi-axis medical imaging of patients in vertical and horizontal positions.

To improve accuracy of tube current modulation, responsiveness, and an accepted modulation width and the like at the time of kV switching.SOLUTION: A storage unit stores characteristics data showing a relation between a filament current value and a tube current output value upon switching between a first tube voltage and a second tube voltage lower than the first tube voltage. A setting unit is a unit that sets a tube current setting value for performing tube current modulation in parallel with switching between the first tube voltage and the second tube voltage. The setting unit sets the first tube current setting value at the time of application of either the first tube voltage or the second tube voltage as the reference tube voltage, and sets a second tube current setting value based on the characteristics data and the first tube current setting value at the time of application of the other tube voltage. In synchronization with the switching between the first tube voltage and the second tube voltage, a tube current control circuit switches between tube current feedback control based on the first tube current setting value at the time of application of the reference tube voltage, and tube current feedback control based on the second tube voltage setting value at the time of application of the other tune voltage.SELECTED DRAWING: Figure 6

A controller and method are for configuring operation of a kVp-s witching spectral CT imaging apparatus which, in at least one mode, aims to mimic the user-side operating workflow of a conventional non-spectral CT scanner. The controller receives user-defined settings associated with operation of a non-spectral CT system, comprising a desired peak tube voltage and desired tube current. Based on these user-specified inputs, the controller performs a conversion procedure to derive a set of spectral CT operating parameters which are estimated to result in administration of the same dose of X-ray radiation over a single kVp switching cycle as would be administered by the conventional scanner over a same time duration. Thus, the user can acquire CT projection and image data using a spectral CT scanner, without a need to change their own operating workflow, and furthermore in a way that will administer the same radiographic density as they would expect to achieve with the same user-specified settings on a conventional scanner.

The present disclosure provides a system and method for scanning a subject. The method includes determining reference dimensions, along the width direction of the table, of the subject on the table at positions along the moving direction of the table; dividing, based on the reference dimensions, the subject into at least one region along the moving direction of the table, the at least one region including at least one of a first region or a second region; and controlling a relative motion between the detector and the table to perform scanning on the at least one region in sequence along the moving direction of the table. During scanning one of the at least one region, the detector moves along the width direction of the table relative to the table.

A CT apparatus includes a plurality of imaging units, a rotation mechanism, and a CPU. The imaging unit includes a radiation source and a radiation detector. The rotation mechanism rotates the plurality of imaging units around a body axis of the subject while maintaining a disposition interval. An imaging control unit of the CPU controls operations of the plurality of imaging units and the rotation mechanism. An angular interval that is determined by a frame rate of the radiation detector and a rotation speed of the imaging unit and that defines an acquisition time of a projection image based on the radiation is the same for the plurality of imaging units. The plurality of imaging units have different phases in a rotation direction, and positions where the plurality of imaging units acquire the projection images are separated by a set angle that is less than the angular interval.

According to an embodiment, an X-ray imaging device includes an irradiator, an exposure switch device, and a control device. The irradiator irradiates a subject placed on a bed with X-rays. The exposure switch device receives an operation of an operator related to X-ray irradiation. The control device controls the X-ray irradiation based on the X-rays. The exposure switch device includes a switch and an output. The switch is set on the basis of a position of the operator and detects the operation of the operator. The output outputs an operation signal based on the operation of the operator to the control device when the operation of the operator has been detected by the switch.

A multi-spectral tomography imaging system includes one or more source devices configured to direct beams of radiation in multiple spectra to a region of interest (ROI), and one or more detectors configured to receive the beams of radiation. The system includes a processor configured to cause movement in at least one of the components such that a first beam of radiation with a first spectrum is directed to the ROI for less than 360 degrees of movement of the ROI. The processor is also configured to process data detected by the one or more detectors, where the data results at least in part from the first beam of radiation with the first spectrum that is directed to the ROI for less than the 360 degrees of movement of the ROI. The processor is further configured to generate an image of the ROI based on the processed data.

To reduce weight and increase rigidity of the whole rotation part including a rotary frame.SOLUTION: An X-ray CT apparatus includes a gantry. The gantry includes: a rotary base supported so as to be rotatable; a plurality of units fixed to the rotary base; and a fixing member installed while being separated from the rotary base to fix at least two of the units to each other.SELECTED DRAWING: Figure 2A

System and related method for tomographic imaging. The system may comprise an input interface for receiving a scan request for a region of interest in a surrounding object. Control logic is operable to cause a tomographic imaging apparatus in an imaging session to acquire, along an acquisition axis (Z), multiple projection frames λ(z) of the surrounding object optionally with application of an image quality, IQ, booster operation, for ranges along the acquisition axis of the imaging apparatus. Whilst the imaging session is ongoing, based on a quality assessment in relation to the acquired projection frames, the control logic is to cause revisit one or more times, an earlier range and re-acquire there fresh projection fames λ'(z), with application of the image quality, IQ, booster operation, until the quality assessment is indicative of the quality being on target, or until a stopping condition is met.

The application discloses a kind of scanning trajectory adjustment method, system, equipment and storage medium, the adjustment method includes: the form information of the part to be scanned of target object is obtained, form information includes the size information and position information of part to be scanned;According to the offset angle of scanning device generated according to size information and position information;According to the scanning trajectory of the part to be scanned of scanning device scanning adjusted by offset angle.This application generates the offset angle of scanning device according to the size information and position information of target object, according to the scanning trajectory of the part to be scanned of scanning device scanning adjusted by offset angle, realizes the scanning trajectory based on the organ form information of target object adjustment, to make scanning trajectory adapt to different organ form.

The invention relates to a method for medical imaging and a medical imaging system. The method comprises the following steps: acquiring a scanning protocol for an inspection object; aiming at the scanning protocol: responding to calibration data associated with the scanning protocol included in a common scanning protocol calibration data set of the medical imaging system, and obtaining the calibration data; or in response to the fact that the calibration data associated with the scanning protocol is not included in the common scanning protocol calibration data set of the medical imaging system, performing calibration operation to generate the calibration data associated with the scanning protocol; scanning the examination object based on a scanning protocol to obtain original imaging data; and using calibration data associated with the scanning protocol and the original imaging data for reconstruction to obtain a medical image of the scanned object.

Proposed is an examinee arranging apparatus for an X-ray imaging device that automatically stops when the pressure applied to an examinee reaches a reference value. The apparatus includes a guide portion installed to be movable for arranging a posture of a subject by applying pressure to the subject by the movement, an operating driving portion for controlling the movement of the guide portion, an elasticity portion for causing elasticity deformation in response to a repulsive force applying to the guide portion, a switch for controlling the operating driving portion to stop the movement of the guide portion when the elasticity deformation reaches a reference value.

To appropriately perform emphasis processing of a confirmation object of an X-ray image.SOLUTION: A medical image processing apparatus includes an acquisition unit, an extraction unit, and an enhanced image generation unit. The processing circuitry is configured to acquire a plurality of X-ray images of a subject in a time series. The processing circuitry extracts a component relating to motion in each of the X-ray images. The enhanced image generation part generates an enhanced image in which the moving object is enhanced in each of the plurality of X-ray images based on the extracted component related to the motion.SELECTED DRAWING: Figure 3

An apparatus and method for dynamically adjusting a table drive in a medical imaging system are described. An example apparatus includes a table, a table motor controller to move the table, and a detection system to detect a wall, accessory or patient parameter. The detection system includes at least one of a QR code reader, an RFID reader, an NFC reader, a LiDAR sensor, or a camera. A processing system calculates a table drive set point based on the detected accessory or patient parameter and adjusts the table drive and height to prevent collisions. The apparatus also includes a user interface configured to receive user input of room dimensions, which are a factor in determining at least one of an initial table drive set point and the new table drive set point, and a display device configured to provide a graphical depiction of a new maximum scannable range.

A non-transitory computer readable medium (26s) stores instructions executable by at least one electronic processor (14s) to perform a method (100) for assisting an imaging examination of a patient. The method includes receiving examination monitoring information (17, 18, 27) related to the imaging examination and transmitting the examination monitoring information (17, 18, 27) to a remote expert (RE), the examination monitoring information including at least a screen mirroring data stream (27) of a controller (10) of an imaging device (2) used to perform the imaging examination of the patient; tracking a status of the imaging examination from the received examination monitoring information; determining one or more indicators of an issue with the imaging examination based on the tracked status of the imaging examination; and outputting a warning indicative of the determined one or more indicators of the issue with the imaging examination.

An X-ray imaging system (100, 200) includes an X-ray radiation source (105, 205) and an X-ray detector (107, 207) disposed on a gantry structure (109, 220). An X-ray imaging system (100, 200) includes a controller (150, 250) configured to perform an action. The actions include defining a virtual wall (602) within a room (606) within which the X-ray imaging system (100, 200) is disposed and receiving a selected set of predefined positions to move the gantry structure (109, 220) from a starting position at which the gantry structure (109, 220) is disposed adjacent to or around the patient table (604) to the predefined position, where the gantry structure (109, 220) is disposed adjacent to or around the patient table (604). The virtual wall (602) has a predefined position to image the subject with the X-ray imaging system (100, 200), and wherein the predefined position is parallel to the virtual wall (602). The actions include receiving an actuation signal that moves the gantry structure (109, 220) from a starting position to a predefined position in a compact motion and moving the gantry structure (109, 220) from the starting position to the predefined position in the compact motion.

The present invention discloses an auxiliary positioning method, device, storage medium and computer equipment. The method includes: obtaining the distance information between the ray source and the detector, and determining the coordinate position of the detector imaging area and the vertical distance from the ray source to the detector based on the distance information between the ray source and the detector; obtaining the opening size of the ray source, and determining the coordinate position of the irradiation field area based on the opening size of the ray source and the vertical distance from the ray source to the detector; obtaining a photographic image between the ray source and the detector, and converting the coordinate position of the detector imaging area and the coordinate position of the irradiation field area into the coordinate position of the detector imaging area and the coordinate position of the irradiation field area in the photographic image based on the vertical distance from the ray source to the detector; and superimposing and displaying the photographic image and the coordinate position of the detector imaging area and / or the coordinate position of the irradiation field area in the photographic image. The above method can improve positioning accuracy.

To perform angle adjustment between a bulb and a radiation imaging device when a radioactive ray is emitted in a horizontal direction appropriately while suppressing costs.SOLUTION: A system 100 includes a bulb (radioactive ray irradiation unit) 23 for emitting a radioactive ray R. The system 100 includes the bulb 23 and a distance measuring unit (measuring unit) 29 for measuring a distance from an imaging device 1 for generating an image based on the radioactive ray R emitted from the bulb 23 and outputting distance information. The system 100 calculates angle information on the imaging device 1 for an irradiation direction of the radioactive ray R by the bulb 23 on the basis of the distance information measured by the distance measuring unit (measuring unit) 29.SELECTED DRAWING: Figure 5