摘要:
An apparatus for automatic selection of optimal tomography slices by executing a number of tentative segmentations using the same interactively provided in-slice seed point on some or all available tomography slices. The appropriate segmentation boundaries are then marked and the slice with the best segmentation goodness value (figure of merit) is presented to the user via a viewer. The steps are repeated when the user changes the seed point. The optimal segmentation boundary is displayed on top of a single simulated mammography image, fused from all tomography slice images.
摘要:
An apparatus for automatic selection of optimal tomography slices by executing a number of tentative segmentations using the same interactively provided in-slice seed point on some or all available tomography slices. The appropriate segmentation boundaries are then marked and the slice with the best segmentation goodness value (figure of merit) is presented to the user via a viewer. The steps are repeated when the user changes the seed point. The optimal segmentation boundary is displayed on top of a single simulated mammography image, fused from all tomography slice images.
摘要:
A system for generating a reconstruction of an object of interest comprises a shape model generator (1) for generating a shape model representing a shape of the object in dependence on a plurality of projections of the object, and a reconstructor (2) for reconstructing the object, based on the projections, in dependence on the shape model to obtain the reconstruction of the object. The reconstructor (2) comprises a soft-tissue reconstructor (4) for generating a reconstruction favoring soft tissue, based on the plurality of projections, and a sparse reconstructor (5) for generating a reconstruction of sparse objects, based on the plurality of projections. The reconstructor (2) comprises a clipping subsystem (3) for clipping an outside of the object from the reconstruction, based on the shape model, or the reconstructor (2) is arranged for reconstructing only an inside and/or boundary of the object as defined by the shape model.
摘要:
Tomosynthesis system with a rotating anode X-ray tube enabling a circular scan trajectory, wherein the X-ray tube 1 may be equipped with a large number of cathodes (21, 22) distributed around an anode. This allows to generate X-rays (41, 42) at focal spot positions (11, 12), for example evenly distributed on a for example circular line (14) on the surface (15) of an anode (10). The object (61) may be located on the (10) axis of rotation (6) of the anode at some distance to the source. For an examination, the object (61) may be exposed to X-ray beams (41, 42) generated successively on all focal spot positions (11, 12), wherein no movement of the X-ray tube 1 is necessary. The transmitted X-ray intensities may be measured by a flat panel detector (50) to achieve a reconstructed three-dimensional image data.
摘要:
A system for three-dimensional analysis of lesions in image data is disclosed. It comprises a lesion detection subsystem (1) for detecting individual lesions and three-dimensional positions of the individual lesions, based on e.g. breast image data (301). It comprises a cluster detection subsystem (2) for detecting a cluster of lesions (302), based on three-dimensional position information of lesions, and associating at least some of the individual lesions with the cluster of lesions (302), based on the three-dimensional positions of the individual lesions. The cluster detection subsystem (2) is arranged for detecting the cluster of lesions (302), based on the three-dimensional positions of the individual lesions. It comprises a cluster analysis subsystem (3) for analyzing the cluster of lesions (302).
摘要:
The present invention relates to mammography. To provide breast density assessment with improved accuracy in the results, a method (100) is proposed for providing mammography information about an object of interest, the region of interest comprising a tissue structure, with the following steps: a) acquiring (110) first image data (112) with first image acquisition parameters (114), wherein the first image parameters are adapted to a first radiation spectrum of a dual energy mode; and wherein the first image acquisition is performed with a low X-ray dosage of a pre-scan; b) acquiring (116) second image data (118) with second image acquisition parameters (120), wherein the second image parameters are adapted to a second radiation spectrum of the dual energy mode, and wherein the second image acquisition is performed with a higher X-ray dosage than the first image acquisition, and wherein the second image acquisition is a Mammography scan; c) performing (122) a dual energy basis material decomposition (124) based on the first and second image data to generate decomposed basis material image data (126); and d) deriving (128) a density information (130) of the tissue structure of the region of interest from the decomposed basis material image data; and providing (132) the density information to a user.
摘要:
The present invention relates to mammography. To provide breast density assessment with improved accuracy in the results, a method (100) is proposed for providing mammography information about an object of interest, the region of interest comprising a tissue structure, with the following steps: a) acquiring (110) first image data (112) with first image acquisition parameters (114), wherein the first image parameters are adapted to a first radiation spectrum of a dual energy mode; and wherein the first image acquisition is performed with a low X-ray dosage of a pre-scan; b) acquiring (116) second image data (118) with second image acquisition parameters (120), wherein the second image parameters are adapted to a second radiation spectrum of the dual energy mode, and wherein the second image acquisition is performed with a higher X-ray dosage than the first image acquisition, and wherein the second image acquisition is a Mammography scan; c) performing (122) a dual energy basis material decomposition (124) based on the first and second image data to generate decomposed basis material image data (126); and d) deriving (128) a density information (130) of the tissue structure of the region of interest from the decomposed basis material image data; and providing (132) the density information to a user.
摘要:
A method includes generating with a processor (122) a three-dimensional subject specific model of structure of interest of a subject to be scanned based on a general three-dimensional model and pre-scan image data acquired by an imaging system (100) generating with the processor (122) an imaging plan for the subject based on the three-dimensional subject specific model.
摘要:
A system for generating a reconstruction of an object of interest comprises a shape model generator (1) for generating a shape model representing a shape of the object in dependence on a plurality of projections of the object, and a reconstructor (2) for reconstructing the object, based on the projections, in dependence on the shape model to obtain the reconstruction of the object. The reconstructor (2) comprises a soft-tissue reconstructor (4) for generating a reconstruction favoring soft tissue, based on the plurality of projections, and a sparse reconstructor (5) for generating a reconstruction of sparse objects, based on the plurality of projections. The reconstructor (2) comprises a clipping subsystem (3) for clipping an outside of the object from the reconstruction, based on the shape model, or the reconstructor (2) is arranged for reconstructing only an inside and/or boundary of the object as defined by the shape model.
摘要:
A system for multi-modality breast imaging comprises a first shape model constructing sub-system (1) for constructing a first shape model of the breast as represented in a first image (9), in which the breast has its natural shape, a second shape model constructing sub-system (2) for constructing a second shape model of the breast as represented in a second image (10), in which the breast is compressed by using a compression paddle, and a deformation estimating sub-system (3) for estimating a volumetric deformation field (12) defining a mapping between the first image (9) and the second image (10) on the basis of the shape models and an elastic deformation model (11) of the breast, the deformation estimating sub-system (3) being arranged to estimate the volumetric deformation field (12) on the basis of a first tissue surface of the breast in the first image (9) and a second tissue surface of the breast in the second image (10).