74 results about "Tomosynthesis" patented technology

Systems and methods for a robotic endoscopy system are provided. The method comprises: (a) receiving instruction to present, at a graphical display, one or both of: one or more tomosynthesis reconstructions or one or more augmented fluoroscopic overlays; and (b) in response to receiving the instruction, causing the graphical display to present one or both of the tomosynthesis reconstructions or the augmented fluoroscopic overlays.

A back illuminated sensor is included as a collector component of a detector for use in intraoral and extraoral 2D and 3D dental radiography, digital tomosynthesis, photon-counting computed tomography, positron emission tomography (PET), and single-photon emission computed tomography (SPECT). The disclosed imaging method includes one or more intraoral or extraoral emitters for emitting a low-dose gamma ray or x-ray beam through an examination area; and one or more intraoral or extraoral detectors for receiving the beam, each detector including a back illuminated sensor. Within the detector, the beam is converted into light and then focused and collected at a photocathode layer without passing through the wiring layer of the back illuminated sensor.

Provided are a radiography system, an image processing device, an image processing method, and an image processing program that prevent an image of a correction marker from being included in a reconstructed region of a tomographic image obtained by reconstructing a plurality of projection images. A radiography system includes a correction marker that is used to obtain a marker image included in at least one of a plurality of projection images obtained by tomosynthesis imaging, is provided in an irradiation path of radiation in a radiation emitting unit, and is disposed at the position where the marker image is included in a region other than a reconstructed region in the projection image, the reconstructed region being a region used in a case in which the tomographic image is reconstructed from the plurality of projection images among the regions included in the plurality of projection images.

A system and method for reviewing a tomosynthesis image data set comprising volumetric image data of a breast, the method comprising, in one embodiment, causing an image or a series of images from the data set to be displayed on a display monitor and selecting or indicating through a user interface an object or region of interest in a presently displayed image of the data set, thereby causing an image from the data set having a best focus measure of the user selected or indicated object or region of interest to be automatically displayed on the display monitor.

This method for reconstructing a tomosynthesis plane of a target organ (14) is computer-implemented and comprises loading (302) projection images acquired by an X-ray detector (10) of a tomosynthesis apparatus (2), and iterations of steps of calculating (303, 304, 305) images reconstructed from the acquired projection images and a preselected or updated three-dimensional motion of the target organ (14), reprojection images, projection residual images, and updating (306) the three-dimensional motion based on the projection residual images. Each iteration is implemented with the three-dimensional motion updated by the previous iteration. Figure for abstract: Fig 3

The present invention relates to a tomosynthesis system capable of obtaining high-resolution 3D images, wherein three-dimensional images can be obtained by imaging a subject from different positions and / or angles of a plurality of X-ray sources without mechanical movement of X-ray equipment. The tomosynthesis system comprises: an X-ray source unit including a plurality of X-ray sources; a movement unit connected to the X-ray source unit to move the X-ray source unit; angle adjustment units respectively connected to the X-ray sources of the X-ray source unit to adjust irradiation angles of the X-ray sources; and a fixing frame that fixes the angle adjustment units.

The information processing device includes a processor. The processor performs: a reconstruction process of reconstructing a plurality of tomographic images from a plurality of projection images obtained by tomosynthesis imaging that irradiates an object with radiation from a radiation source at a plurality of radiation source positions; a synthesis process of synthesizing the plurality of tomographic images to generate a synthesized two-dimensional image as a projection image based on a virtual radiation source position; an anatomical structure extraction process of extracting anatomical structures from a projection image corresponding to a radiation source position closest to the virtual radiation source position among the plurality of radiation source positions; and a display process of displaying an extraction result of the anatomical structures on a display device together with the synthesized two-dimensional image.

An image generation device, an image generation method, and a program capable of improving the generation accuracy of a pseudo two dimensional image as compared with a case where an image generation model learned using a combination of a plurality of projection images or a plurality of tomographic images and a normal two dimensional image captured separately from tomosynthesis imaging for obtaining the plurality of projection images or the plurality of tomographic images is used are obtained.SOLUTION: The image processing apparatus 16 as an image generation apparatus includes an image generation model that is learned in advance by a plurality of combinations of a plurality of projection images or a plurality of tomographic images and a normal two dimensional image captured by irradiating the breast compressed by the compression member with radiation in tomosynthesis imaging for obtaining the plurality of projection images or the plurality of tomographic images.SELECTED DRAWING: Figure 5

A method for generating a plurality of contrast-enhanced mammograms of an examination region is described. In the method a plurality of at least two different angular positions is defined for a contrast-enhanced tomosynthesis projection recording of an examination region. At least two low-energy tomosynthesis projection recordings of the examination region are subsequently generated, starting from the at least two different angular positions, in the presence of a contrast agent. Furthermore, at least two high-energy tomosynthesis projection recordings of the examination region are generated, starting from the at least two different angular positions, in the presence of a contrast agent. Finally, at least two contrast-enhanced mammograms are generated by subtracting a respective low-energy tomosynthesis projection recording from a respective high-energy tomosynthesis projection recording for a respective angular position. In addition, a mammography system is described.

An x-ray imaging apparatus 10 comprising a support 30 having two arms, wherein on one arm an x-ray emitter 50 is arranged, and on the other arm a flat panel digital detector 60 is arranged, the emitter and detector arranged opposite each other providing a space therebetween for the positioning of an object for x-ray imaging by the apparatus, the x-ray emitter comprising an array of emitters, the apparatus arranged such that in use different emitters are energisable independently from one another such that 3-dimensional tomosynthesis images are obtainable of the object, with the object, emitter and detector maintained stationary relative to one another.

A method and system for producing tomosynthesis images of a specimen in a cabinet x-ray system. An X-ray source delivers X-rays through a specimen of excised tissue and forms an image at a digital X-ray detector. Multiple X-ray images are taken as the X-ray source moves relative to the stationary breast specimen. The X-ray source moves in a range from about 330° to and including about 30°. The source may travel substantially along a path that generally defines an arc, or linearly, while the detector remains stationary throughout and the source remains substantially equidistant from the specimen platform. The set of X-ray image data taken at the different points are combined to form a tomosynthesis image that can be viewed in different formats, alone or as an adjunct to two dimensional specimen radiography.

Systems and methods related to processing medical image data. Medical image data of a patient's breast tissue is received from a medical imaging device. The medical image data includes a plurality of X-ray projection images of the patient's breast tissue from a plurality of perspectives. The medical image data is encoded using lossy compression. The medical image data is decoded to yield a transmission image. The transmission image is encoded using lossless compression to yield a first compressed image. The first compressed image is transmitted to a first viewing device. The first viewing device is configured to decode the first compressed image to yield the transmission image and view the transmission image using the first viewing device. Viewing the transmission image includes viewing at least one of the plurality of X-ray projection images of the patient's breast or a composite image of the plurality of X-ray projection images.

One or more example embodiments of the present invention relates to a computer-implemented method for providing an outline of a lesion in digital breast tomosynthesis includes receiving input data, wherein the input data comprises a reconstructed tomosynthesis volume dataset based on projection recordings, a virtual target marker within a lesion being in the tomosynthesis volume dataset; applying a trained function to at least a part of the tomosynthesis volume dataset to establish an outline enclosing the lesion, the part of the tomosynthesis volume dataset corresponding to a region surrounding the virtual target marker in the tomosynthesis volume dataset; and providing output data, wherein the output data is an outline of a two-dimensional area or a three-dimensional volume surrounding the target marker.

Systems and methods are provided for a multi-scale deep learning-based digital breast tomosynthesis (DBT) image reconstruction that mitigates the superposition of breast tissue along with the limited angular artifacts, and improves in-depth resolution of the resulting images. A multi-scale deep neural network may be used where a first network may focus on a first parameter, such as limited angular artifacts reduction, and a second network may focus on a second parameter, such as image detail refinement. The output from the first neural network may be used as the input for the second neural network. The systems and methods may reduce the sparse-view artifacts in DBT via deep learning without losing image sharpness and contrast. A deep neural network may be trained in a way to reduce training-time computational cost. An ROI loss method may be used for further improvement on the resolution and contrast of the images.

An image processing apparatus includes a CPU. The CPU acquires a series of a plurality of projection images or a plurality of tomographic images obtained by performing tomosynthesis imaging by irradiating a breast with radiation having a first energy; acquires a plurality of normal two-dimensional images captured by irradiating the breast with radiation having a second energy, which is higher than the first energy, a plurality of times; calculates, for each of the plurality of normal two-dimensional images, a virtual projection position, which is a position at which the breast is virtually projected during the tomosynthesis imaging, from a position of a radiation source in a case in which the normal two-dimensional image is captured; generates a composite two-dimensional image from the plurality of projection images or the plurality of tomographic images based on the virtual projection position calculated for each of the plurality of normal two-dimensional images; and generates a difference image between each of the plurality of normal two-dimensional images and each of the composite two-dimensional images generated for each of the plurality of normal two-dimensional images.

A processor acquires a composite two-dimensional image and region-of-interest information including information of a tomographic image corresponding to a region of interest on the composite two-dimensional image, displays a schema that schematically shows a breast and the composite two-dimensional image, and displays positions of the region of interest in the displayed schema and composite two-dimensional image in association with each other.

The invention provides a novel CBCT system based on a novel line scanning bulb tube, and belongs to the technical field of X-ray medical image.The novel CBCT system comprises a sampling system and a control system.The sampling system comprises a bulb tube with a light source focus capable of conducting linear track scanning, an energy integration or photon counting detector and a movement rack system; the scanning type anode of the bulb tube can be composed of discrete array light sources and can also be composed of rotary wing anodes, and light source focuses conduct controllable, rapid and repeated scanning or movement in a motion system. Imaging is carried out through controllable light source focus linear track scanning, an imaging method similar to tomosynthesis is achieved at the position of a single bulb tube, and CBCT imaging is achieved under the condition of limited angle sampling through a rotary light source-detector rack combination.

Presented is an X-ray diagnostic method and system that uses tomosynthesis imaging technology with an in-motion multi-pulse actuated X-ray source. While acquiring X-ray instrument image data, an artificial intelligence (AI) analyzes the patient response and compares the current pathology with the patient history and other patient information that may be part of the patient. The AI ​​reports changes in lesion location, sets severity thresholds and warning status, and generates treatment information. The AI ​​also recommends X-ray region of interest (ROI) scans, full X-ray CT scans, or other medical professionals and specialists.

An imaging system includes an x-ray tube head, a support arm, and a compression system coupled to the support arm. The compression system is independently rotatable relative to the x-ray tube head and includes a compression paddle, a support platform, and an x-ray receptor. The imaging system also includes a light assembly coupled to the support arm and disposed above the compression paddle. The light assembly is configured to direct one or more beams of light towards the support platform.

A method of identifying a location of a region of interest within a breast utilizes compressed location coordinates for the region of interest recorded while the breast is under compression during an x-ray imaging procedure such as mammography or tomosynthesis. The compressed location coordinates are converted to uncompressed location coordinates using a mathematical tissue deformation model. The volume and density of the breast affects how the coordinates are translated for use with an ultrasound imaging system. A system including a computing system in communication with an ultrasound imaging system is utilized to perform the method. The resultant predicted location coordinates of the region of interest are used to guide a healthcare provider to potential lesions that are to be examined using ultrasound, where the potential lesions had been previously identified during a screening mammogram.

Various methods and systems are provided for reducing an amount of time and resources spent on reviewing digital breast tomosynthesis (DBT) images and corresponding synthetic 2D images. In one example, a method includes receiving a plurality of tomosynthesis data studies, each study comprising a first image set of synthetic two-dimensional (S2D) images, a second image set of slab images, and a third image set of plane images. For each study of the plurality of tomosynthesis data studies, a minimum dataset to be reviewed by a radiologist is determined based on an analysis of the tomosynthesis data by an AI-based system, and the minimum dataset is displayed on a display device rather than the plurality of tomosynthesis data studies.

An imaging system includes an x-ray tube head, a support arm, and a compression system coupled to the support arm. The compression system is independently rotatable relative to the x-ray tube head and includes a compression paddle, a support platform, and an x-ray receptor. The imaging system also includes a light assembly coupled to the support arm and disposed above the compression paddle. The light assembly is configured to direct one or more beams of light towards the support platform.

X-ray sources emit X-rays into an examination region along different projection views. An X-ray detector array detects the X-rays emitted by the X-ray sources after passing through the examination region. X-ray imaging data are acquired by cycling through the X-ray sources with each step of the cycle including: switching an active X ray source on to emit X-rays and the other X ray sources off to not emit X rays, and acquiring X ray imaging data along the projection view corresponding to the active X-ray source that is switched on. Tomosynthesis image reconstruction is performed on the X ray imaging data to generate at least one volumetric image. A time sequence of spatially aligned images is produced from the time sequence of volumetric images. A perfusion image and / or a ventilation image is generated based on voxel intensity variation over time of the time sequence of spatially aligned images.

A method and system for real‑time fluoroscopy guidance in robotic interventions. A tomosynthesis sweep of 2D fluoroscopic projections is used to reconstruct a 3D image of a target. The 3D target is projected as an overlay into live fluoroscopy frames. A best‑matching tomosynthesis projection is selected and a reference feature common to the reference projection and live frames is localized. Displacement of the reference feature is computed and compared to thresholds to determine whether the subject's physical state has changed and whether the overlay remains correctly positioned. The system provides qualitative indicators, recommends retake of tomosynthesis when misalignment exceeds tolerance, and can pause or limit robotic tool advancement until alignment is restored. Adaptive thresholding using a trained model is supported.

A method to identify and / or assess structural integrity of a composite material, by distributing fiducial markers within the composite material during manufacture, and subsequently creating x-ray 3D tomosynthesis images of the composite material using an array of x-ray emitters and a digital x-ray detector, the 3D tomosynthesis images being used to determine the relative location of at least some of the fiducial markers. This enables detection of counterfeit products by comparison with recorded data at manufacture and detection of an internal degradation of the material indicated by movement of the fiducial markers. Relative locations of fiducial markers in a first set of images are compared with relative locations of fiducial markers in a second set of images, to identify common fiducial markers and thereby determine an offset therebetween. Both sets of images may be used to reconstruct a combined three-dimensional density function.

The invention relates to an optical assembly and a method for mammography and tomosynthesis imaging systems. An imaging system includes an X-ray tube head, a support arm, and a compression system coupled to the support arm. The compression system is independently rotatable relative to the X-ray tube head and includes a compression paddle, a support platform, and an X-ray receiver. The imaging system also includes an illumination assembly coupled to the support arm and disposed above the compression paddle. The illumination assembly is configured to direct one or more light beams toward the support platform.

A computer-implemented method for predetermining a location and / or a thickness of a slice, to be imaged of a patient during a tomosynthesis imaging to be parameterized by an imaging facility comprising the steps of obtaining three-dimensional image data of a preceding tomosynthesis imaging or of another three-dimensional imaging of the patient, wherein the three-dimensional image data depicts at least one part of an object located at least partly within the patient, evaluating the three-dimensional image data for establishing the location of a longitudinal axis of the object along which the part of the object extends, and establishing the location and / or the thickness of the slice to be imaged as a function of the established location of the longitudinal axis in such a way that the slice to be imaged images a predetermined target position within the patient and at least one longitudinal section of the object when the longitudinal axis of the object is located in the established location.

For visual support in a medical intervention on a hollow organ of a patient, reference data that includes a reference representation of the hollow organ is obtained, an X-ray projection image of the hollow organ is generated, and items of overlay information are determined based on the reference data. The reference data includes items of planning information relating to a location of a characteristic feature of the hollow organ in the reference representation. A reference volume is determined in the reference representation as a function of the items of planning information. A reconstruction of a volume of the patient corresponding to the reference volume is generated using a tomosynthesis method. Registration data is generated in that the reference volume is registered in relation to the reconstruction and the items of overlay information are overlaid on the X-ray projection image as a function of the registration data.