子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Three dimensional orientation configuration apparatus, method and program | EP15159669.9 | 2015-03-18 | EP2930695A1 | 2015-10-14 | Sakuragi, Futoshi |
A projection image of a three dimensional image is generated and displayed and a three dimensional target point corresponding to a designated two-dimensional target point is set to the three dimensional image. A reference cross-section is set to the three dimensional image by using the three dimensional target point. A cross-sectional two-dimensional image of the reference cross-section in which an object close to a point of view that faces the reference cross-section is not displayed is generated. An instruction to change the position of the point of view, using the three dimensional target point based on the cross-sectional two-dimensional image as a reference point, in order to align an observation direction of a structure to which the three dimensional target point is set with a target three dimensional direction is received. A new reference cross-section is set. A new cross-sectional two-dimensional image of the new reference cross-section is generated.
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| 42 | Method and apparatus for large field of view imaging and detection and compensation of motion artifacts | EP13150490.4 | 2009-12-23 | EP2586374A3 | 2013-08-28 | SCHRETTER, Colas; BERTRAM, Matthias; NEUKIRCHEN, Christoph |
A method and apparatus are provided to improve large field of view CT image acquisition by using at least two scanning procedures: (i) one with the radiation source and detector centered and (ii) one in an offset configuration. The imaging data obtained from both of the scanning procedures is used in the reconstruction of the image. In addition, a method and apparatus are provided for detecting motion in a reconstructed image by generating a motion map that is indicative of the regions of the reconstructed image that are affected by motion artifacts. Optionally, the motion map may be used for motion estimation and/or motion compensation to prevent or diminish motion artifacts in the resulting reconstructed image. An optional method for generating a refined motion map is also provided.
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| 43 | Method and apparatus for large field of view imaging and detection and compensation of motion artifacts | EP13150490.4 | 2009-12-23 | EP2586374A2 | 2013-05-01 | SCHRETTER, Colas; BERTRAM, Matthias; NEUKIRCHEN, Christoph |
A method and apparatus are provided to improve large field of view CT image acquisition by using at least two scanning procedures: (i) one with the radiation source and detector centered and (ii) one in an offset configuration. The imaging data obtained from both of the scanning procedures is used in the reconstruction of the image. In addition, a method and apparatus are provided for detecting motion in a reconstructed image by generating a motion map that is indicative of the regions of the reconstructed image that are affected by motion artifacts. Optionally, the motion map may be used for motion estimation and/or motion compensation to prevent or diminish motion artifacts in the resulting reconstructed image. An optional method for generating a refined motion map is also provided.
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| 44 | SYSTEMS AND METHODS FOR MEDICAL IMAGING | US15981277 | 2018-05-16 | US20180333111A1 | 2018-11-22 | Zijun JI |
| A system for medical imaging is provided. The system includes a scanning device configured with a scanning cavity, a control device, and an output device configured within the scanning cavity. The control device is configured to obtain one or more scan protocols and acquire at least one guide instruction corresponding to the one or more scan protocols. The output device is configured to obtain guide information corresponding to the at least one guide instruction and present the guide information. The scanning device is configured to scan a subject with the presentation of the guide information according to the one or more scan protocols. | ||||||
| 45 | IMAGING SYSTEM AND METHODS DISPLAYING A FUSED MULTIDIMENSIONAL RECONSTRUCTED IMAGE | US16030400 | 2018-07-09 | US20180322666A1 | 2018-11-08 | Ashok Burton Tripathi; George Charles Polchin; Yen Ting Ng |
| A system, method, and apparatus for displaying a fused reconstructed image with a multidimensional image are disclosed. An example imaging system receives a selection corresponding to a portion of a displayed multidimensional visualization of a surgical site. At the selected portion of the multidimensional visualization, the imaging system displays a portion of at least one of a three-dimensional image or model which corresponds to the selected multidimensional visualization such that the displayed portion of the at least one of the three-dimensional image or model is fused with the displayed multidimensional visualization. | ||||||
| 46 | Method and apparatus for planning or controlling a radiation treatment | US14921363 | 2015-10-23 | US10105553B2 | 2018-10-23 | Pascal Bertram; Claus Promberger; Thomas Flurschuetz |
| A method for generating planning data or control data for a radiation treatment, comprising the following steps: acquiring segmented data of an object which contains a treatment volume and a non-treatment volume; modelling at least some or all of the volume or surface of the treatment volume as a source of light or rays exhibiting a predefined or constant initial intensity; modelling the non-treatment volume as comprising volumetric elements or voxels which each exhibit an individually assigned feature or attenuation or transparency value (tmin≤t≤tmax) for the light or rays which feature is assigned to the light or ray or which attenuation or transparency maintains or reduces the intensity of the light or ray as it passes through the respective volumetric element or voxel, wherein the feature or attenuation or transparency value is individually assigned to each volumetric element or voxel of the non-treatment volume; defining a map surface which surrounds the treatment volume or the object; calculating an accumulated intensity value for points or areas on the map surface, the accumulated intensity being the sum of the intensities of all the rays which exhibit the predefined or constant initial intensity and are emitted from the volume or surface of the treatment volume and reach a respective point on the map surface preferably by following a straight line, wherein if the ray passes through a non-treatment volume or voxel, the intensity of the respective ray is reduced or attenuated by a factor which is determined by the individual feature or attenuation or transparency value of the respective non-treatment volume or voxel; and generating an intensity distribution on the map surface using the calculated accumulated intensities. | ||||||
| 47 | METHOD AND APPARATUS FOR ASSESSING IMAGE REGISTRATION | US15556904 | 2016-02-23 | US20180247412A1 | 2018-08-30 | Mark Gooding; Timor Kadir |
| A method and apparatus for assessing image registration. The method comprises obtaining image datasets for the first and second medical images and registration data representing the registration from the first medical image to the second medical image, collating use-case information for the image registration, deriving a set of at least one measurement and assessment criteria therefor based at least partly on the collated use-case information, performing the at least one measurement on at least one of the obtained image datasets and the obtained registration data to derive at least one measurement value, applying the assessment criteria for the at least one measurement to the at least one measurement value to derive at least one assessment result, and outputting an indication of the at least one assessment result. | ||||||
| 48 | System for dynamically propagating real-time alterations of medical images | US15191004 | 2016-06-23 | US10032316B2 | 2018-07-24 | Michael Huber; Michael Waschbuesch; Lasse Toimela; Patrik Kunz |
| Embodiments of the present invention are directed to methods and a mechanism for manipulating images generated by radiotherapy machines used in radiation diagnostic and treatment applications. In one embodiment, a method is provided for intelligent automatic propagation of real-time alterations across graphical structures of an image by mapping the relativity between the structures; determining the correlation between the structures and a manually edited structure; referencing a deformation map that maps a correspondence for each point in the original structure with a point in the edited structure and applying a similar relative change throughout the remaining structures in the image. | ||||||
| 49 | Imaging system and methods displaying a fused multidimensional reconstructed image | US15412959 | 2017-01-23 | US10019819B2 | 2018-07-10 | Ashok Burton Tripathi; George Charles Polchin; Yen Ting Ng |
| A system, method, and apparatus for displaying a fused reconstructed image with a multidimensional image are disclosed. An example imaging system receives a selection corresponding to a portion of a displayed multidimensional visualization of a surgical site. At the selected portion of the multidimensional visualization, the imaging system displays a portion of a reconstructed image which corresponds to the selected multidimensional visualization such that the displayed portion of the reconstructed image is fused with the displayed multidimensional visualization. | ||||||
| 50 | Image construction with multiple clustering realizations | US15269005 | 2016-09-19 | US09953442B2 | 2018-04-24 | Harshali Bal; Vladimir Y. Panin; Michael E. Casey |
| A method includes overlaying a grid on a set of dynamic PET, SPECT, CT or MR data, so as to define a set of voxels defining a plurality of cluster seeds; extracting a respective time activity curve (TAC) for dynamic PET or SPECT data or time varying signals in the case of dynamic CT or MR data, for each voxel based on the data; selecting a subset of the cluster seeds defined by the grid as initial cluster centroids of a set of clusters; assigning each TAC to a respective cluster in the set of clusters; computing a respective average TAC of each cluster; generating a parametric image based on the respective average TACs for the clusters; repeating the overlaying, determining, selecting, assigning, computing, and generating; and averaging the generated parametric images. | ||||||
| 51 | Three-dimensional resolution gauge for evaluating performance of tomographic imaging systems | US15097515 | 2016-04-13 | US09934603B2 | 2018-04-03 | David J. Goodenough; Joshua R. Levy |
| A three-dimensional resolution gauge for evaluating performance of a tomographic imaging system includes a series of groupings of 3-dimensional line pairs. All of the line pairs are oriented at a common set acute angle relative to a reference x-y imaging plane. The frequency of the line pairs of respective groupings of the series vary from highest density to lowest density corresponding to fine resolution and coarse resolution, respectively. Imaging of the series of groupings by the tomographic imaging system provides, in a single scan, a simultaneous visualization of combined effects of x-y in-plane resolution and slice thickness z direction resolution. | ||||||
| 52 | Material analysis of anatomical items | US14459163 | 2014-08-13 | US09865096B2 | 2018-01-09 | Dane Coffey; Daniel F. Keefe; Arthur G. Erdman; Benjamin J. Bidne; Gregory Ernest Ostenson; David M. Flynn; Kenneth Matthew Merdan; Chi-Lun Lin |
| A computer-implemented method for medical device modeling includes accessing an electronic definition for a model of a three-dimensional item and an electronic definition of a three-dimensional spline relating to an internal anatomical volume; determining, with a computer-based finite element analysis system and using the electronic definitions, stresses created by the three-dimensional item along the three-dimensional spline, for different points along the three-dimensional spline; and displaying stress data generated by the finite element analysis system with a visualization system, the display of the stress data indicating levels of stress on portions of the three-dimensional item at particular locations along the three-dimensional spline. | ||||||
| 53 | System and method for regularized reconstruction of phase contrast computerized tomography | US15004293 | 2016-01-22 | US09805481B2 | 2017-10-31 | Jonathan Immanuel Sperl; Dirk Beque |
| Reconstructing under-sampled PCT data includes obtaining under-sampled scan data of a subject-under-test, the object scan performed on a phase contrast computed tomography (PCT) system, performing a regularized Fourier analysis on the under-sampled scan data, correcting for one or more PCT system contributions to the under-sampled scan data by dividing the computed Fourier coefficients by Fourier coefficients representative of the one or more PCT system contributions, obtaining at least one of an absorption sinogram, a differential phase sinogram, and a dark field sinogram from the corrected Fourier coefficients, and performing tomographic reconstruction on the obtained absorption sinogram, the obtained differential phase sinogram, and the obtained dark field sinogram. A system and non-transitory computer readable medium are also disclosed. | ||||||
| 54 | Physics-based high-resolution head and neck biomechanical models | US15047580 | 2016-02-18 | US09786092B2 | 2017-10-10 | Anand P. Santhanam; John Neylon; Patrick A. Kupelian |
| Systems and methods are shown for developing physics-based high resolution biomechanical head and neck deformable models for generating ground-truth deformations that can be used for validating both image registration and adaptive RT frameworks. | ||||||
| 55 | Image distortion correction and robust phantom detection | US14398130 | 2013-04-30 | US09743892B2 | 2017-08-29 | Guoyan Zheng; Steffen Schumann |
| The invention relates to a method for detecting a phantom, comprising the steps of: arranging a phantom with respect to an object, acquiring at least one image of said object by means of an x-ray apparatus, such that the image contains projections of the object and projections of at least three first calibration fiducials of the phantom, detecting the projections of the at least three first calibration fiducials in said at least one image, and establishing a correspondence between the 2D image coordinates of said projections of the at least three first calibration fiducials and the 3D coordinates of said at least three first calibration fiducials in a local coordinate system of the phantom for computing the projection matrix at least up to a scale factor. | ||||||
| 56 | Method for eliminating artifact by detecting fracture of the brain in the computed tomography image and the computed tomography apparatus thereof | US14823007 | 2015-08-11 | US09721368B2 | 2017-08-01 | Dong-Joo Kim |
| A method for eliminating an artifact of a computed tomography image is provided. The method includes eliminating a machine artifact from a cross-sectional computed tomography scans of the brain; setting boundary points positioned on a horizontal axis and a vertical axis in the computed tomography image, from which the machine artifact has been eliminated; resetting a boundary point positioned at a boundary between the skull of the brain and the brain tissue based on the boundary points; detecting a position of a fracture of the brain in the computed tomography image, in which the boundary point has been reset, and overlaying a fracture region with a skull pixel; and eliminating an artifact from the computed tomography image, which has been overlaid with the skull pixel. | ||||||
| 57 | X-ray CT apparatus and image reconstruction method | US14759480 | 2014-01-29 | US09715745B2 | 2017-07-25 | Ryota Kohara |
| To provide an X-ray CT apparatus that can reduce calculation time required for an iterative approximation projection data correction process by restricting a range for the iterative approximation projection data correction process and generate low-noise images according to the examination purpose, the calculation device of the X-ray CT apparatus generates correction projection data by performing an iterative approximation projection data correction process for projection data acquired in scanning and reconstructs CT images using the correction projection data. The calculation device determines a range to which iterative approximation projection data correction process is applied based on scanning conditions and reconstruction conditions. For example, a slice direction application range is determined based on an X-ray beam width, and a channel direction application range is determined based on an FOV. The calculation device performs an iterative approximation projection data correction process for projection data corresponding to the determined application range to generate correction projection data. | ||||||
| 58 | Segmentation and Spectrum Based Metal Artifact Reduction Method and System | US15337075 | 2016-10-28 | US20170109904A1 | 2017-04-20 | Zhifeng Huang; Thomas A. Case |
| A segmentation-and-spectrum-based metal artifact reduction (MAR) system and method is applied in polychromatic X-ray CT system that uses a priori knowledge of high-Z metals in samples which contribute the primary artifacts at a known x-ray energy spectrum. Using a basis materials decomposition, the method solves the problem of reducing or eliminating metal artifacts associated with beam hardening using only a single scan of the sample performed at selected x-ray energy. | ||||||
| 59 | Method and system for medical image synthesis across image domain or modality using iterative sparse representation propagation | US14696780 | 2015-04-27 | US09595120B2 | 2017-03-14 | Hien Nguyen; Shaohua Kevin Zhou |
| A method and apparatus for medical image synthesis across image modalities or domains is disclosed, which synthesizes a target medical image based on a source medical image. A plurality of image patches are cropped from the source medical image. A synthesized target medical image is then generated from the source medical image by jointly performing sparse coding between each image patch of the source medical image and a corresponding image patch of the synthesized target image based on jointly trained source and target dictionaries. | ||||||
| 60 | Three dimensional orientation configuration apparatus, method and non-transitory computer readable medium | US14665037 | 2015-03-23 | US09589391B2 | 2017-03-07 | Futoshi Sakuragi |
| A projection image of a three dimensional image is generated and displayed and a three dimensional target point corresponding to a designated two-dimensional target point is set to the three dimensional image. A reference cross-section is set to the three dimensional image by using the three dimensional target point. A cross-sectional two-dimensional image of the reference cross-section in which an object close to a point of view that faces the reference cross-section is not displayed is generated. An instruction to change the position of the point of view, using the three dimensional target point based on the cross-sectional two-dimensional image as a reference point, in order to align an observation direction of a structure to which the three dimensional target point is set with a target three dimensional direction is received. A new reference cross-section is set. A new cross-sectional two-dimensional image of the new reference cross-section is generated. | ||||||
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