994results about "Tomography" patented technology

An image processing apparatus is disclosed. The image processing apparatus of the present invention comprises: an image receiving unit for receiving a first image and a second image of the same object taken at different times; a processor for obtaining transformation information by registering the first image on the basis of the second image, obtaining a first segment image corresponding to an area of the object from the first image, and generating a second segment image corresponding to an area of the object of the second image by transforming the obtained first segment image according to the transformation information; and an output unit for outputting the second segment image.

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.

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.

The present disclosure provides a cone beam computed tomography system for proton therapy comprising an x-ray source configured to generate x-rays and positioned to rotate around a patient at a treatment isocenter, a detector assembly positioned opposite the x-ray source and configured to receive x-rays that have passed through the patient, a rotation mechanism configured to rotate the x-ray source and the detector assembly around the patient while maintaining their relative positions, a translation mechanism configured to translate at least one of the x-ray source, the detector assembly, or a patient couch during rotation to implement a wobbled scan orbit, and a scatter rejection grid attached to the detector assembly and focused on the x-ray source to reduce scattered x-rays. The translation mechanism distributes missing projection data across multiple radii and angles, enabling improved reconstruction quality through iterative reconstruction methods.

The purpose of the present disclosure is to present factors including the reason and basis for reaching an estimation when performing an estimation using a model constructed by artificial intelligence including machine learning. A data acquisition unit (11) acquires input data (IN). A factor estimation unit (12) inputs the input data (IN) to an estimation model (M1), thereby estimating a factor of a measurement target that is included in the input data (IN), and outputs information indicating the estimated factor as a factor estimation result (OUT1). A classification estimation unit (13) outputs a classification estimation result (OUT2) indicating a result obtained by classifying the measurement target on the basis of the factor estimation result (OUT1). A display unit (14) displays the factor estimation result (OUT1) and the classification estimation result (OUT2).

The invention relates to a cable guidance system (10) for a computed tomography system, wherein a gantry (2) of the computed tomography system is adjustable in a horizontal plane, the cable guidance system (10) comprising: - a guide connection (17) arranged on the gantry (2), - a gantry articulated arm (12) and a center articulated arm (11), wherein the gantry articulated arm (12) is pivotably connected to the guide connection (17) by means of a first joint (14) and to the center articulated arm (11) by means of a second joint (14), - a ceiling column (13) with a column head (13a) that can be attached to a ceiling and a column body (13b) arranged on the column head (13a), wherein the central articulated arm (11) is rotatably attached about the longitudinal axis (L) of the column at a coupling point (13c) of the column body (13b) that is opposite the column head (13a), wherein the ceiling column (13), the gantry articulated arm (12) and the central articulated arm (11) are designed to guide at least one supply line (19) along their longitudinal axes to the guide connection (17).

The objective is to provide image diagnostic technology that utilizes machine learning models. [Solution] One aspect of the present disclosure relates to a machine learning model trained using training data that includes first ultrasonic image data based on a received signal received by an ultrasonic transducer, first ground truth data which is first region information associated with a detection target of the first ultrasonic image data, and second ground truth data which is either first location information associated with a detection target of the first ultrasonic image data, or second region information based on the first location information.

This invention relates to the fields of orthodontics and medical image processing, and particularly to a method and system for assessing and warning of stability after maxillary expansion surgery. The method includes: extracting an anti-artifact bone anchoring zone point cloud from maxillary cone-beam CT data; extracting a palatal mucosal surface morphology point cloud corresponding to the anatomical position of the anti-artifact bone anchoring zone point cloud from intraoral scan data, and rigidly registering the anti-artifact bone anchoring zone point cloud with the palatal mucosal surface morphology point cloud to obtain a cross-modal spatial mapping matrix from the intraoral scan coordinate system to the cone-beam CT coordinate system; determining a local region in the cone-beam CT data based on the cross-modal mapping coordinates, and calibrating the position of the cross-modal mapping coordinates based on the cone-beam CT data to output the final marker coordinates. This invention can obtain high-precision final marker coordinates, improving detection accuracy, and has low computational cost, strong interpretability, and prevents subsequent width calculation distortion and false warnings.

At least some embodiments of the present disclosure describe a wearable apparatus for medical imaging which includes: a supporting device; a plurality of x-ray signal emitters arranged in a first closed shape on the supporting device and configured to emit x-ray signals to an object; a plurality of detectors disposed on the supporting device and configured to detect the x-ray signals; and one or more processors coupled to the plurality of x-ray signal emitters and the plurality of detectors. In some embodiments, the one or more processors are configured to: receive data from the plurality of detectors; and generate a cross-sectional image based on the data received from the plurality of detectors. In certain embodiments, the plurality of x-ray signal emitters, the plurality of detectors, and the object remain physically stationary when the wearable apparatus is in use.

An image processing apparatus and an image processing method, the image processing apparatus including: a volume data acquisition unit that acquires volume data of an object; a volume data segmentation unit that segments the volume data to obtain base tubular data; a fine tubular data acquisition unit that acquires fine tubular data from the volume data; a tubular data generation unit that generates tubular data based on the fine tubular data and the base tubular data; and a data output unit that outputs the tubular data.

The utility model discloses a kind of calibration devices of radiological imaging system, comprising: calibration phantom, the calibration phantom is hollow structure, for providing the space reference required for calibration under different projection angles;Multi-layer steel ball, the steel ball is embedded in the inner wall of the calibration phantom, each layer The steel ball is arranged in the form of symmetric distribution or preset asymmetric distribution, to form the code required for calibration.The utility model proposes a kind of calibration body containing multi-layer symmetric / asymmetric distribution mark point, for the geometric calibration of CBCT system or C arm X-ray machine.Compared with the traditional calibration body, the utility model ensures the uniqueness and coverage of projection track, reduces the equipment cost of geometric calibration, significantly improves the solution robustness.

The present application relates to the technical field of CT protective cover, and discloses a body radiation protective cover for infant CT scanning, which comprises an inner frame, the inner frame comprises a plurality of horizontally telescopic C-shaped skeletons, a plurality of cross plates are hinged between the C-shaped skeletons, the bottom end of the C-shaped skeleton is fixedly connected with a cylindrical sleeve, a guide rod is slidably connected in the cylindrical sleeve, a positioning block is fixedly connected to the outer wall of the guide rod, and an adjusting rod is slidably connected in the positioning block.The present application has excellent adaptive flexibility, can accurately match the size difference of different infants, and can flexibly adjust the width of the inner frame through the relative sliding design of the left and right bending pipes of the C-shaped skeleton, adapt to the body width of different fat and thin infants, and synchronously adjust the spacing of all C-shaped skeletons through the transmission cooperation of the cross plate and the length adjusting structure of the adjusting rod, realize the flexible adaptation of the length of the inner frame, and meet the protection needs of infants of different heights.

The invention relates to at least one method and at least one localization system for localizing a portable component (6, 13) of an imaging system (1), wherein the portable component (6, 13) is arranged on a patient (8) for an examination procedure, comprising: - Emitting at least one optical localization signal (210, 211, 212) in an imaging area (12) of the imaging modality (11) by at least one optical transmitting element (201, 202, 203), - Receiving the at least one emitted optical localization signal (210, 211, 212) by at least one optical receiving element (220, 221, 222) which is arranged on the portable component (6, 13), - Transmission of at least one received optical localization signal (210, 211, 212) via an optical transmission link (230 - 235) to an electronic evaluation unit (240) which is located outside an examination room (250), and - Localization of the portable component (6 ,13) based on the at least one received optical localization signal (210, 211, 212) by the electronic evaluation unit (240).

Systems and methods are herein provided for annotation and segmentation of 3D multi-volume imaging data. In one example, a method comprises obtaining three-dimensional (3D) multi-volume imaging data, the 3D multi-volume imaging data comprising a plurality of registered image volumes; determining one or more positions of a user cursor within a first image of a first image volume of the plurality of registered image volumes; determining a contour point position corresponding to each of the one or more positions of the user cursor for two or more of the plurality of registered image volumes; generating two or more segmentation contours corresponding to the two or more of the plurality of registered image volumes; determining, via user input, a selected segmentation contour of the two or more segmentation contours; generating a 3D segmentation mask based at least in part on the selected segmentation contour and saving the 3D segmentation mask to memory.

A framework for multi-scan image processing. A single real anatomical image of a region of interest is first acquired. One or more emission images of the region of interest are also acquired. One or more synthetic anatomical images can be generated based on the one or more emission images. One or more deformable registrations of the real anatomical image to the one or more synthetic anatomical images are performed to generate one or more registered anatomical images. Then, attenuation correction can be performed on the one or more emission images using the one or more registered anatomical images to generate one or more attenuation-corrected emission images.

Two-dimensional X-ray images with enhanced tumor contrast are generated from computed tomography (CT) image data that were previously acquired from a subject. A simulated X-ray image is generated from the CT image data, where the simulated X-ray image depicts tissues that are non-essential for a radiotherapy plan. An X-ray image of the subject is acquired with an on-board imaging system of a radiotherapy system. A subtraction X-ray image is then generated by subtracting the simulated X-ray image from the X-ray image. The subtraction X-ray image has improved visualization of tumor tissues relative to the X-ray image by way of removing the non-essential tissues from the X-ray image.

An X-ray imaging device is disclosed. The X-ray imaging device of the present disclosure may comprise: a fixed frame; an X-ray generator movably coupled to the fixed frame; a moving assembly for moving the X-ray generator in the horizontal direction; a detector to which the X-ray generator is directed; and a collimator which is disposed between the X-ray generator and the detector, and which has a hole through which X-rays of the X-ray generator pass.

According to some embodiments of the disclosure, it is provided a computer-assisted method for assisting a practitioner for planning a dental implant, the method comprising obtaining (200, 205) a 3D representation of at least a portion of a dental arch, segmenting (235), from the 3D representation, teeth adjacent to a site of the dental implant and of an associated crown and segmenting (250), from the 3D representation, a bone comprising a portion of the site, selecting the dental implant and determining (260) a position of the dental implant as a function of the segmented teeth and bone, and displaying (265) at least a portion of the segmented teeth and bone and displaying the selected dental implant at the determined position.

This method provides support for appropriate implant procedures using three-dimensional data representing the oral cavity. [Solution] This is a support device for assisting in implant procedures that include multiple components. The support device comprises an acquisition unit that acquires three-dimensional data showing the three-dimensional shape of the oral cavity including the jawbone; a calculation unit that determines the position of each of the multiple components in the oral cavity based on the three-dimensional data acquired by the acquisition unit and adjusts the position of at least one of the determined multiple components based on the positional relationship of the multiple components; and an output unit that outputs support information showing the position of each of the multiple components after adjustment by the calculation unit.

The utility model relates to the technical field of ultrasonic imaging and chip design, and relates to a circuit system and chip for realizing on-chip continuous wave Doppler ultrasound. The utility model directly connects together the host computer receiver and the host computer receiver and internal transducer array element through the CW channel; the array periphery can be multiplexed for transmitting the analog channel of the received signal in B mode; the MUX switch is arranged on the array unit inside and the array periphery circuit; the MUX switch of array unit inside is controlled to control the access of arbitrary transducer array element to the CW channel; arbitrary CW channel is connected to the host computer interface outside the chip through the MUX switch on the array periphery circuit. The utility model realizes the continuous wave Doppler ultrasound function under the premise of not increasing the number of additional cables and not increasing the additional power consumption; the flexibility of CW transmission and reception is guaranteed, the chip area is saved, the cable needed for ultrasonic probe integration is reduced, and the utility model can be widely applied to various ultrasonic imaging systems and ultrasonic chips.

A cleaning device for a tomography device, in particular an MRT, has an examination tunnel. The cleaning device has a nozzle assembly for applying a liquid cleaning agent to a tunnel inner surface facing toward the tunnel axis, a mounting device, which is configured to mount the nozzle assembly on a structural unit of the tomography device parallel to the tunnel axis and displaceably along the examination tunnel, and a control unit, which is configured, in the intended cleaning operation, to specify the application of the cleaning agent in dependence on the movement of the nozzle assembly.

To provide a device, a system, and a method for a preoperative plan and an intraoperative guidance for orthopedic surgery of a fractured joint suffering bone fragmentation.SOLUTION: A surgery system can be configured to acquire image data of a joint including at least a portion of humerus, segment the image data to determine a shape of a diaphysis of the humerus, determine a shape of the humerus before it becomes the estimated pathosis on the basis of the determined shape of the diaphysis, identify one or more bone chips in the image data on the basis of the estimated shape of the humerus, and generate an output on the basis of the bone chips identified in the image data.SELECTED DRAWING: Figure 35

This invention discloses an AI-assisted diagnostic system for CT rib fractures based on image recognition, belonging to the field of smart healthcare technology. It includes recognizing the patient's contour using thermal imaging data, constructing a respiratory model to analyze respiratory status, and automatically triggering CT image acquisition of the ribs at the optimal inhalation moment. Subsequently, artifact detection is performed; if qualified, the system is handed over to AI for intelligent fracture diagnosis, achieving a fully automated process from image acquisition to diagnosis. This invention uses non-contact thermal imaging to monitor respiration and body movement, constructing a respiratory model that integrates chest contour and airflow temperature changes, accurately identifying the optimal inhalation moment to trigger CT acquisition, reducing motion artifacts at the source and improving image quality. The system is highly robust, automatically determining the optimal acquisition time even under conditions of clothing or weak breathing, reducing reliance on patient cooperation, and is particularly suitable for rib fracture patients, improving examination success rate and efficiency.

The present invention provides a system and method for tracking the movement of a catheter within the airways of the lungs. [Solution] The deformable model of the lung represents the airways of the lung as airway segments joined at branching points. Deformation of the lung model is performed using modifications to the angles and / or positions of the airway segments relative to each other. The initial model may be generated, for example, based on segmentation of CT images. The baseline deformable registration of the initial model to the patient's lung shape at the start of the procedure may be established from catheter position measurements along several different paths. Optionally, the baseline registration is dynamic according to the respiratory phase. Compared to the baseline registration, real-time changes in lung shape may be modeled by using position sensors distributed along the catheter body and using further measurements acquired using the catheter as the catheter navigates to the target.