114results about "Tomosynthesis" patented technology

Systems and methods are described that implement displaying grouped medical images for review. Current medical image management systems generally use thumbnail image grouping of images that have the same position and side. These groups of thumbnail images can be large, making it difficult for a clinician (e.g., a radiologist) to quickly find a particular view they are interested in reviewing. The disclosed systems and methods provide for user-selectable grouping and ungrouping of thumbnail images in a graphical user interface, which makes it easier for a clinician to quickly find a particular view that they are interested in and enables a more-efficient review of an imaging study.

Method for operating a dental diagnostic imaging system for temporomandibular joint (TMJ) diagnostics and / or TMJ therapy, providing at least two modalities for generating (205, 210) three-dimensional image data, wherein a first image and at least a second image depicting the surface of the object (120) to be imaged are tomographically generated for a dental object (120) comprising at least one TMJ (105, 110), wherein the at least two three-dimensional image data generated (205, 210) in the at least two images are combined by means of a multimodal registration (225, 230) (225), wherein the generation (205, 210) of the at least two three-dimensional image data on the object (120) to be imaged is carried out with markings (125, 310 - 325) captured in the at least two images of different modalities (200).and wherein the at least two three-dimensional image data are spatially assigned to the temporomandibular joint (105, 110) by means of multimodal registration (225, 230) on the basis of the markers (125, 310-325) captured in the three-dimensional image data of both modalities (225), wherein the markers (125, 310-325) are arranged in a spatially restricted recording area for the at least two recordings of different modalities, wherein the markers (125, 310-325) are visible in the at least two recordings of different modalities, and wherein the image data generation is carried out at least by means of the first tomographic recording with the spatially restricted recording area corresponding to the markers (125, 310-325) (205, 210), wherein the spatially restricted recording area is arranged within the oral region of a patient for temporomandibular joint diagnostics and / or for temporomandibular joint therapy, characterized in thatthat the markings (125, 310 - 325) are arranged on a template (115) that can be precisely positioned within the patient's oral cavity, wherein the template (115) is placed in the restricted recording area (200) before the generation (205, 210) of the three-dimensional image data.

The invention relates to a mammography system having a stand unit for locating the mammography system on the floor; an L-shaped source unit, the L-shaped source unit including an arm connected to an X-ray detector in a rotatably mounted manner on a front face of the stand unit, and another arm of the L-shaped source unit protrudes substantially perpendicularly, an X-ray source being located at an end of the source unit remote from the stand unit; and a substantially U-shaped protective unit.

An image processing device detects a spicula candidate region having a radial line structure from each of a plurality of tomographic images indicating a plurality of tomographic planes of an object, selects, as a tomographic image group, a plurality of the tomographic images corresponding to a plurality of the spicula candidate regions indicating the same radial line structure among a plurality of the detected spicula candidate regions, and generates a composite two-dimensional image using the selected tomographic image group.

A method is for reconstructing an image from recording data. In an embodiment, the method includes providing or measuring recording parameters with which the recording data was created; generating a preprocessing filter for the recording data based on the recording parameters; prefiltering the recording data with the preprocessing filter, to create prefiltered recording data; and reconstructing the image from the prefiltered recording data. A prefilter-generating unit, an apparatus corresponding to the method, a control facility and an image-taking system are also disclosed.

The present disclosure provides methods, systems, and non-transitory computer readable media for evaluating patient tissue screening images using an Al model as a tool for assisting physicians in correctly identifying malignancies in screening images. By generating an Al score based on a malignancy likelihood from the screening images, various workflows may follow to either validate or contradict a physician's decision for recalling the patient. Where the Al score contradicts the recall decision, the screening images are transmitted to a second physician for review, whereby the original recall decision is affirmed or a consultation between the physicians is requested.

Disclosed herein are methods of treating breast cancer in a subject. Preferably, these methods include presenting a plurality of mammograms from one or more breasts of a subject over a time period, performing an algorithm-based analysis of the mammograms, the algorithm predicting a risk of interval or occult mammographic cancers, and administering an estrogen receptor modulating pharmaceutical to the subject based on a breast cancer risk score generated from the algorithm-based analysis.

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.

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 modular X-ray source and method for replacement of such an X-ray source are disclosed. The source is inside a consumable modular enclosure where the entire assembly is swapped out during maintenance. The enclosure covers an X-ray tube, high voltage circuit boards 6 and cooling insulating oil are arranged inside the module enclosure. The enclosure structure includes an X-ray window, connector engagement alignment guide and electrical connectors. The modular X-ray source is used in a multiple source tomosynthesis imaging system where multiple pulsed X-ray sources are utilized. The easy replacement of X-ray tube assembly inside the consumable modular enclosure results in lower maintenance cost and overall reliable X-ray imaging machine. The modular source has potential to increase the machine volume in the field and create new standards for replaceable modular X-ray source.

Systems and methods for analyzing images. The methods comprise using an imaging device to acquire a pre-shot image of a target anatomical area of an individual; analyzing the pre-shot image to assess image quality of one or more regions within the pre-shot image; and determining acquisition parameters for a full-dose image from the one or more measures of image quality. The methods also include acquiring, by the imaging device, a full-dose image using the acquisition parameters determined during analysis of the pre-shot image; and generating a final image from the full-dose image.

Described herein are systems, methods, and instrumentalities associated with processing mammogram images using machine learning based techniques. An apparatus as described herein may obtain a mammographic image of a person, extract features from the mammographic image using a feature encoder, and predict a health condition of the person based on the extracted features. The feature encoder may be trained using a self-supervised technique and based on multi-view mammogram images that may belong to a same person or to different people.

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.

Mammography system (100), comprehensive - a swivel arm (108, 308, 508, 608, 708, 1008, 1108), - an X-ray source (102), and - a protection unit (103, 203, 303, 403, 503, 603, 703, 803, 903, 1003, 1103, 1203, 1303, 1403, 1503), wherein the swivel arm (108, ..., 1108) is designed to swivel the X-ray source (102), where the protection unit (103, ..., 1503) is arranged in a stationary position, wherein the protective unit (103, ..., 1503) is arranged in a protective position to prevent a collision between a patient and the swivel arm (108, ..., 1108), wherein the protection unit (103, ..., 1508) has a removable section (203.2, 303.2, 403.2, 503.2, 603.2, 703.2, 803.2, 903.2, 1003.2, 1103.2, 1203.2, 1303.2, 1403.2, 1503.21, 1503.22) and a fixed section (203.1, 303.1, 403.1, 503.1, 603.1, 703.1, 803.1, 903.1, 1003.1, 1103.1, 1203.1, 1303.1, 1403.1, 1503.1) includes wherein the removable section (203.2, ..., 1503.22) of the protective unit (103, ..., 1503) can be removed from the protective position.

SOLUTION: An X-ray imaging apparatus and associated method are provided that receive measured projection data from a wide aperture scan of a wide body-axis direction and a narrow aperture scan of a narrow body-axis direction within the wide body-axis direction and determine an estimated scatter in the wide body-axis direction using an optimized scatter estimation technique. The optimized scattering evaluation technique is based on the difference between the measured scattering in the narrow body-axis direction and the evaluated scattering in the narrow body-axis direction. The kernel-based scatter evaluation / scatter correction approach can be fitted to minimize scatter differences in a narrow body-axis direction. Thereafter, the fitted (optimized) kernel-based scatter evaluation / correction is applied to the wide body-axis direction region. Optimization may occur in the projection data domain or in the reconstruction domain. An iterative process is also utilized.SELECTED DRAWING: None

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.

Method and system for generating panoramic radiographic images by merging contributions from panoramic images obtained with respect to a plurality of layers, wherein the method provides for performing a so-called Multipan image acquisition and for identifying the image contributions of the various panoramic images that present the best focus of details reproduced therein and for combining said contributions of said images into a fused panoramic image by applying a wavelet decomposition transform to said images for identifying said contributions of said images that represent image details with the best focus and reconstructing from these the fused image by applying the inverse wavelet transform. According to an advantageous variant, the method provides for a step of aligning the horizontal magnification of the panoramic images prior to applying the wavelet transform for decomposition and reconstruction. The invention also relates to a system for implementing said method, comprising a radiographic device and a processing unit in which a program is loaded and from which said program is executable, said program comprising instructions for the processor of said processing unit such that, when said instructions are executed, the processing unit is capable of performing the steps of the method that is the subject of the present invention.

While performing a tomosynthesis procedure, the breast of a patient is compressed between two compression elements to create an imaging condition. Foam is secured to the rigid substrate of a one of the compression elements. The patient's chest wall is aligned with the leading edge surface of the foam. The inner side of the breast is disposed proximate the lateral edge surface of the foam and the outer side of the breast is disposed proximate the outer lateral edge surface of the foam. A mid-plane is disposed between the inner and outer lateral edge surfaces of the foam. An interface connects a leading edge surface of the foam and compressive surfaces. A portion of the leading edge surface which is aligned with the mid-plane is incompletely compressed.

A medical support device includes a processor configured to: acquire an examination image including a radiation image obtained by performing radiographic imaging of a breast in a state of being compressed by a compression member and a plurality of ultrasound images captured in a state in which the breast is compressed by the compression member, and that displays a position of a virtual cross section on each of the ultrasound image and the radiation image, and a schema image including a first schema image as an image that shows a first schema as a schematic view showing the breast in the radiographic imaging and that displays a position of the virtual cross section based on the ultrasound image; and execute display control of displaying a display image including the examination image and the schema image.

A method includes positioning a patient in a first orientation relative to a radiation source. The method further includes measuring one or more locations of a patient's thorax using a 3D imaging technique. The method further includes, while measuring the one or more locations of the patient's thorax using the 3D imaging technique: generating a model of the patient's thorax using the one or more locations of the patient's thorax; updating the model of the patient's thorax as the patient breathes; and exposing the patient to a radiation dose using the radiation source, wherein the dose is determined according to the model of the patient's thorax.

A computer implemented method of estimating tissue density of a body part of a subject from a medical image of tissue of the body part of the subject includes receiving at least one medical image of tissue of the body part of the subject, the received medical image being from a first imaging modality or a second imaging modality, estimating tissue density of the body part from the at least one medical image using a deep-learning model pretrained using images from the first imaging modality and images from the second imaging modality, and outputting an estimate of tissue density of the body part of the subject based on the tissue density estimated by the deep-learning model.

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.

A method for forming radiographic images of oral anatomy of a subject exposes the subject to radiation along a radiation path. At each position on a detector array in the radiation path, the number of photons received from the radiation through the subject are counted, wherein the detector maintains a first photon count for photons having a first energy above a first threshold energy value and at least a second photon count for photons having a second energy above a higher threshold energy value. One or more materials in the mouth of the subject are identified by performing material decomposition processing, according to two or more basis materials, and distinguishing between natural oral anatomy features and fabricated materials in the mouth of the subject according to the material decomposition processing. Conditioned image content enhances the distinction between natural oral anatomy features and fabricated material according to the material decomposition.

A transport system with curved track pair is constructed for multiple pulsed X-ray source-in-motion to perform fast digital tomosynthesis imaging. It includes a curved rigid track pair with predetermined curvature, a primary motor stage car loaded with X-ray sources and wheels loaded with tension or compression springs. The car is driven by primary motor mounted at base frame and an engaged gear mounted at the car. The car can carry heavy loads, travel with high precision and high repeatability at all installation orientations while motion vibration is minimal. It is also scalable to have a larger radius. Track angle span usually can be from about ten degrees to about 170 degrees. During imaging acquisition, X-ray sources can sweep precisely from one location to another. The car has enough clearance to move in its path without rubbing wheels on tracks.

The present application discloses a system and method to calculate the automatic exposure control (AEC) calibrated dosage for tomosynthesis sweeps. For example, reference images may be acquired, and corresponding reference detector count maps may be generated and stored for a plurality of projection angles using the tomosynthesis imaging system. The tomosynthesis imaging system may then acquire a scout image using a scout dosage, identify the densest region within the scout image, and calculated the average detector count values associated with the densest region. The AEC calibrated dosage can be calculated based on a ratio of the average reference detector count values, corresponding to the detector count values of pixels with a corresponding densest region of the reference image, and the calculated average detector count values.

An X-ray imaging system using multiple pulsed X-ray sources to perform highly efficient and ultrafast 3D radiography is presented. There are multiple pulsed X-ray sources mounted on a structure in motion to form an array of sources. The multiple X-ray sources move simultaneously relative to an object on a pre-defined arc track at a constant speed as a group. Electron beam inside each individual X-ray tube is deflected by magnetic or electrical field to move focal spot a small distance. When focal spot of an X-ray tube beam has a speed that is equal to group speed but with opposite moving direction, the X-ray source and X-ray flat panel detector are activated through an external exposure control unit so that source tube stay momentarily standstill equivalently. 3D scan can cover much wider sweep angle in much shorter time and image analysis can also be done in real-time.

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 x-ray imaging apparatus and associated methods are provided to execute multi-pass imaging scans for improved quality and workflow. An imaging scan can be segmented into multiple passes that are faster than the full imaging scan. Data received by an initial scan pass can be utilized early in the workflow and of sufficient quality for treatment setup, including while the another scan pass is executed to generate data needed for higher quality images, which may be needed for treatment planning. In one embodiment, a data acquisition and reconstruction technique is used when the detector is offset in the channel and / or axial direction for a large FOV during multiple passes.

A digital tomographic image acquisition device according to one embodiment of the present invention is presented. The device comprises: a generator for generating X-rays; and a detector for detecting read data corresponding to the generated X-rays, wherein the detector detects the read data in a target reading area corresponding to a source area into which the X-rays generated by the generator are to be emitted, and the target reading area can be set as a partial area of the entire reading area covered by the detector.