Computerized Tomography Patents (Class 378/4)
  • Patent number: 10967202
    Abstract: A method of generating an image synthesis process is disclosed, where the image synthesis process improves image quality of degraded volumetric images. In the method, a machine learning process is trained in a supervised learning framework as the image synthesis process. In the supervised learning process, a lower-quality partial-data reconstruction of a target volume is employed as an input object in the supervised learning process and a higher-quality full data reconstruction of the target volume is employed as an expected output. The full data reconstruction is generated based on a first set of projection images of the three-dimensional volume and the partial-data reconstruction is generated based on a second set of projection images of the three-dimensional volume, where the second set of projection images includes projection images that have less image information and/or are of a lower image quality than the first set of projection images.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: April 6, 2021
    Assignee: VARIAN MEDICAL SYSTEMS, INC.
    Inventors: John Van Heteren, Petr Jordan, Adam Wang, Josh Star-Lack
  • Patent number: 10959695
    Abstract: The present disclosure relates to systems and methods for image generation. The methods may include obtaining projection data generated by a scanner; generating, based on a first weighting function, a first image by back-projecting the projection data, the first image having a first region corresponding to a first part of the object; generating, based on a second weighting function, a second image by back-projecting the projection data, the second image having a second region corresponding to the first part of the object, the second region of the second image presenting a better CT number uniformity than the first region of the first image; and generating a third image based on the first image and the second image.
    Type: Grant
    Filed: December 30, 2018
    Date of Patent: March 30, 2021
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Zhicong Yu, Yuan Bao, Dajun Wang, Alexander Zamyatin
  • Patent number: 10952688
    Abstract: A computed tomography system is disclosed with a gantry assembly and a base assembly. The gantry assembly having a x-ray source, and a x-ray imager. The base assembly is configured to receive power and provide mechanical stability. A connection interface is located between the gantry assembly and the base assembly. The connection interface is configured to mechanically lock the gantry assembly to the base assembly and provide power to the gantry assembly through the base assembly.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: March 23, 2021
    Assignee: XORAN TECHNOLOGIES, INC.
    Inventors: Miodrag Rakic, William C. Van Kampen, Dejan Teofilovic, Andrew J. Custer
  • Patent number: 10950016
    Abstract: A method for reconstructing target cardiac images is provided. The method may include: obtaining projection data, the projection data including a plurality of sub-sets of projection data, each sub-set of projection data corresponding to a cardiac motion phase; obtaining a plurality of sampled cardiac motion phases; generating a plurality of cardiac images of the plurality of sampled cardiac motion phases by reconstructing, based on the one or more sub-sets of projection data corresponding to the each sampled cardiac motion phase, one or more cardiac images of the each sampled cardiac motion phase; determining a plurality of cardiac motion parameters corresponding to the plurality of sampled cardiac motion phases based on the plurality of cardiac images; determining a mean phase based on the plurality of cardiac motion parameters corresponding to the plurality of sampled cardiac motion phases; and reconstructing the one or more target cardiac images of the mean phase.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: March 16, 2021
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventor: Yi Wang
  • Patent number: 10950012
    Abstract: An image processing element 9 of the present invention includes a weighting factor setting element 9a that sets up a weighting factors wnn, wbi of the weight addition combing a nearest neighbor interpolation and a bilinear interpolation based on an absolute value |Ibi?Inn| of the difference between the pixel value Inn acquired by the nearest neighbor interpolation and the pixel value Ibi acquired by the bilinear interpolation; and a weight addition element 9b that implement a weighting addition based on the set-up weighting factors wnn, wbi. A reconstructed image can be acquired by arranging the backprojection pixel value Inew every pixel following the weighting.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: March 16, 2021
    Assignee: SHIMADZU CORPORATION
    Inventors: Tomonori Sakimoto, Kazuyoshi Nishino
  • Patent number: 10945683
    Abstract: According to one embodiment, an X-ray computed tomography apparatus includes processing circuitry. The processing circuitry sets a parameter of an examination protocol. Based on the set parameter, the processing circuitry determines the number of acquisition views and the number of reconstruction views of projection data. The processing circuitry acquires first projection data corresponding to the number of acquisition views. The processing circuitry calculates second projection data corresponding to the number of reconstruction views based on the first projection data. The processing circuitry reconstructs a CT image based on the second projection data.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: March 16, 2021
    Assignee: Canon Medical Systems Corporation
    Inventors: Satoru Nakanishi, Shuya Nambu
  • Patent number: 10945697
    Abstract: An X-ray computed tomography (CT) apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to generate image data based on a detection result obtained by detecting X-rays transmitted through a subject with a detector. The processing circuitry is configured to specify a boundary between a first region and a second region in the image data, based on anatomical landmarks in the image data, and adjust setting of scan conditions relating to a tube current value in accordance with information relating to a position of the boundary.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: March 16, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takahiro Goto, Shinsuke Tsukagoshi
  • Patent number: 10948432
    Abstract: A sample inspection apparatus irradiates a sample with a conical shell of X-ray or similar radiation generating a plurality of Debye rings originating from a circular path on the sample. The apparatus is provided with two detectors. A first detector receives diffracted radiation and a second detector receives radiation which is transmitted through a coded aperture provided at a detection surface of the first detector.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: March 16, 2021
    Assignees: The Nottingham Trent University, Cranfield University
    Inventors: Paul Evans, Keith Rogers
  • Patent number: 10932730
    Abstract: Method for estimating radiation dose received by a tissue of interest during an imaging scan comprising: i, obtaining image data of a body region including the tissue of interest, ii. sub-dividing the image data into axial slices, comprising tissue axial slices and non-tissue axial slices, iii. determining a net amount of radiation dose emitted or received by each axial slice by combining scan parameters of each axial slice with pre-calculated amounts of radiation dose, iiii summing the net amounts of radiation dose of all the tissue axial slices to obtain a tissue dose.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: March 2, 2021
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Jens Wiegert, Bernd Menser, Peter Prinsen
  • Patent number: 10925553
    Abstract: A medical imaging apparatus for computer tomography, includes a first housing frame; a scanning section, movably disposed in an axial direction with respect to the first housing frame; and driving device(s). The scanning section includes an essentially toroidal scanning section housing including at least one uncovered axial surface, and a radiation source and a radiation detector, rotatably disposed inside of the essentially toroidal scanning section housing. The driving device(s) are configured to move the scanning section along an axial direction with respect to the first housing frame to perform a telescopic motion of the radiation source and radiation detector, during an operation of the medical imaging apparatus. The at least one uncovered axial surface of the essentially toroidal scanning section housing is movable along the axial direction.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: February 23, 2021
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventor: Stefan Lautenschlaeger
  • Patent number: 10922812
    Abstract: An image processing apparatus according to an embodiment has processing circuitry configured to acquire three-dimensional medical image data; set coordinates of at least two or more elements to evaluate an evaluation target represented by the three-dimensional medical image data, on images of different positioning slices of the three-dimensional medical image data; calculate a measured value for evaluating the evaluation target based on the coordinates; and control a display to display the measured value.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: February 16, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yoshimasa Kobayashi, Hisanori Kato
  • Patent number: 10921884
    Abstract: A virtual reality apparatus and method are described.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: February 16, 2021
    Assignee: Intel Corporation
    Inventors: Tomas G. Akenine-Moller, Robert M. Toth, Ingo Wald, Aditya S. Yanamandra, Brent E. Insko, Michael Apodaca, Prasoonkumar Surti
  • Patent number: 10922854
    Abstract: Methods, devices and apparatus for CT imaging in a CT system are provided. The CT system includes a CT console, a CT scanner and an image reconstruction computer. In one aspect, a method includes detecting, by the CT console, whether a parameter adjustment instruction is received from a user during a scanning process in which a preview image is generated and displayed to the user. If the parameter adjustment instruction is received, the CT console sends adjusted scan parameters to at least one of the CT scanner or the image reconstruction computer such that the CT scanner and the image reconstruction computer generate a new preview image based on the adjusted scan parameters that are determined according to the preview image. If the parameter adjustment instruction is not received, the CT console displays to the user a CT image generated by the image reconstruction computer after finishing the scanning process.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: February 16, 2021
    Assignee: Neusoft Medical Systems Co., Ltd.
    Inventors: Shuangxue Li, Liguo Zhang
  • Patent number: 10898727
    Abstract: Computed tomography (CT) measurement data of the patient is acquired using a CT device having a quantum counting X-ray detector, and the CT measurement data is processed to generate result data, considering a specific information content of the CT measurement data resulting from the use of the quantum counting X-ray detector in acquiring the CT measurement data. The result data is suitable for use in the planning of irradiation of the patient. The result data is provisioned to an interface such that the result data is usable for planning the irradiation of the patient.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: January 26, 2021
    Assignee: Siemens Healthcare GmbH
    Inventors: Christopher Jude Amies, Christian Hofmann, Philipp Hoelzer, Mark-Aleksi Keller-Reichenbecher, Bjoern Kreisler, Andre Ritter, Rene Kartmann
  • Patent number: 10898154
    Abstract: The present disclosure provides a system and method for X-ray imaging. The method of calculating scatter in an X-ray image may include forming a modulated X-ray image. The method of forming the modulated X-ray image may include acquiring X-rays through a collimator module and an imaged object in sequence to generate an X-ray image group; the acquisition may be performed during a movement of the collimator module in a first direction and the X-ray image group may include a plurality of X-ray images acquired at different times during the movement of the collimator; extracting sub-zones from the plurality of X-ray images in the X-ray image group; combining the sub-zones in the first direction to form the modulated X-ray image. In the present disclosure, an intensity distribution of the X-rays may be adjusted flexibly using a collimator without adding any extra hardware. In addition, scatter components in the X-ray images may be calculated to eliminate the scatter in the X-ray images finally.
    Type: Grant
    Filed: November 24, 2016
    Date of Patent: January 26, 2021
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Gui Li, Lu Xu, Hongcheng Yang
  • Patent number: 10893917
    Abstract: Medical software tools platforms utilize a surgical display to provide access to specific medical software tools, such as medically-oriented applications or widgets, that can assist surgeons or surgical team in performing various procedures. In particular, an endoscopic camera may register the momentary rise in the optical signature reflected from a tissue surface and in turn transmit it to a medical image processing system which can also receive patient heart rate data and display relevant anomalies. Changes in various spectral components and the speed at which they change in relation to a source of stimulus (heartbeat, breathing, light source modulation, etc.) may indicate the arrival of blood, contrast agents or oxygen absorption. Combinations of these may indicate various states of differing disease or margins of tumors, and so forth. Also, changes in temperatures, physical dimensions, pressures, photoacoustic pressures and the rate of change may indicate tissue anomalies in comparison to historic values.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: January 19, 2021
    Inventor: Jack Wade
  • Patent number: 10866221
    Abstract: Disclosed herein is an ion analysis instrument combining a chromatographic or other separation device for separating gaseous analyte material according to retention time with an ultra-violet (“UV”) spectrometer or detector for obtaining ultra-violet spectral data of at least a portion of the analyte material separated in said chromatographic or other separation device and a mass and/or ion mobility spectrometer for obtaining mass and/or ion mobility spectral data of ions generated from at least a portion of the analyte material separated in said chromatographic or other separation device. This instrument is able to provide highly orthogonal multidimensional data sets.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: December 15, 2020
    Assignee: MICROMASS UK LIMITED
    Inventor: Martin Raymond Green
  • Patent number: 10849581
    Abstract: Among other things, a guide unit and a radiation system including a guide unit are provided. The guide unit limits axial movement of a rotatable structure supporting a radiation source and a detector array of the radiation system. Embodiments of the guide unit include a frame member configured to be supported by a stationary unit that forms a portion of the radiation system. A guide wheel coupled to the frame member is configured to roll along a periphery of the rotatable structure of the radiation system as the rotatable structure supporting the radiation source and the detector array is rotated about an axis of rotation during operation of the radiation system. A wheel adjustment system coupled to the frame member linearly translates the guide wheel toward the periphery of the rotatable structure supported by the stationary unit of the radiation system.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: December 1, 2020
    Assignee: Analogic Corporation
    Inventors: Steven D. Weed, Andrew Alvino
  • Patent number: 10850125
    Abstract: The present disclosure generally relates to the field of radiation treatment. More specifically, the present disclosure generally relates to methods and radiation treatment systems for generating a radiation treatment plan. According to one example embodiment, a method may comprise dividing at least one dose characteristic related to a dose distribution for a ROI into a plurality of subintervals. The method may further comprise partitioning the ROI into a plurality of different partitions based on the subintervals. All voxels of the ROI with values within the same subinterval are partitioned into the same partition. For each of the plurality of different partitions, the method may comprise establishing a weight and specifying an optimization function for an obtainable dose distribution based on the respective subinterval of dose characteristics. The method may further comprise generating the radiation treatment plan based on said established weights and specified optimization functions.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: December 1, 2020
    Assignee: RaySearch Laboratories AB
    Inventors: Albin Fredriksson, Mats Holmström, Kjell Eriksson
  • Patent number: 10846860
    Abstract: Imaging systems comprising x-ray image reconstruction systems combined with optical imaging and/or tracking systems. In some embodiments, the imaging system may comprise an x-ray image reconstruction system configured to generate three-dimensional image data of at least an internal portion of a target object under a surface of the target object and a three-dimensional optical imaging system configured to reconstruct an image of at least a portion of the surface of the target object by generating surface three-dimensional image data. The three-dimensional optical imaging system may be registered to the x-ray tomosynthesis image reconstruction system such that three-dimensional image data from the x-ray tomosynthesis image reconstruction system and three-dimensional image data from the three-dimensional optical imaging system may be used as a constraint to improve image quality of an image of the target object.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: November 24, 2020
    Assignee: nView medical Inc.
    Inventors: Cristian Atria, Arvidas B. Cheryauka, Lisa M. Last
  • Patent number: 10845499
    Abstract: Provided are CT scanning systems and architectures that utilize a unique approach to scanning large objects. Various embodiments of the architecture incorporate a horizontally mounted CT gantry. The horizontal gantry can be raised or stored in a raised position so that a pallet or other object can be moved into a scanning position under the gantry. The gantry is then lowered to enable a quickly executed a scan. Addition objects can be quickly positioned (once the gantry is raised) for subsequent scans allowing for greater throughput than conventional approaches.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: November 24, 2020
    Assignee: IDSS Holdings, Inc.
    Inventor: Joseph S. Paresi
  • Patent number: 10839567
    Abstract: The disclosure relates to PET imaging systems and methods. The systems may execute the methods to obtain an anatomical image and PET data of a subject, and gate the PET data into a plurality of bins. The systems may execute the methods to reconstruct a plurality of gated PET images based on the gated PET data. The systems may execute the methods to determine a motion vector field corresponding to a target respiratory phase with respect to a reference respiratory phase relating to the anatomical image. The systems may execute the methods to obtain a respiratory phase-matched anatomical image for the target respiratory phase by transforming a VOI in the anatomical image based on the motion vector field corresponding to the target respiratory phase with respect to the reference respiratory phase, and reconstructing an attenuation corrected PET image corresponding to the target respiratory phase.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: November 17, 2020
    Assignee: UIH AMERICA, INC.
    Inventors: Jizhe Wang, Tao Feng, Hongdi Li
  • Patent number: 10830909
    Abstract: A radioscopic apparatus includes a controller configured or programmed to, when imaging information using the first radiation source is selected, perform control of retracting a second detector to a position in one of longitudinal ends of a table, at which the second detector does not block radiation emitted from a first radiation source, according to information about a region to be imaged of a subject included in the selected imaging information.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: November 10, 2020
    Assignee: SHIMADZU CORPORATION
    Inventors: Hiroki Onodera, Masahiro Tanaka, Keita Okutani
  • Patent number: 10827991
    Abstract: A marker-coordinate detecting unit detects coordinates of a stent marker on a new image when the new image is stored in an image-data storage unit; and then a correction-image creating unit creates a correction image from the new image through, for example, image transformation processing, so as to match up the detected coordinates with reference coordinates that are coordinates of the stent marker already detected by the marker-coordinate detecting unit in a first frame. An image post-processing unit then creates an image for display by performing post-processing on the correction image created by the correction-image creating unit, the post-processing including high-frequency noise reduction filtering-processing, low-frequency component removal filtering-processing, and logarithmic-image creating processing; and then a system control unit performs control of displaying a moving image of an enlarged image of a set region that is set in the image for display, together with an original image.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: November 10, 2020
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Takuya Sakaguchi, Kyojiro Nambu, Hisato Takemoto
  • Patent number: 10827987
    Abstract: The present invention relates to an X-ray image processing device and an X-ray image processing method using a small X-ray detector, in which the device includes a controller configured to control an X-ray source and an X-ray detector to obtain m (m is an integer of 2 or more) number of consecutive divided projection images at each of preset n (n is an integer of 1 or more) number of imaging angles while rotating around a rotary axis and facing each other, a projection image synthesizing unit configured to generate a synthetic projection image by synthesizing the m number of divided projection images obtained in correspondence to each imaging angle, and an image reconstructor configured to generate a reconstructed image by reconstructing the synthetic projection image.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: November 10, 2020
    Assignees: VATECH Co., Ltd., VATECH EWOO Holdings Co., Ltd.
    Inventors: Woong Bae, Sang Og Na, Sung Il Choi
  • Patent number: 10832638
    Abstract: There is provided an image display device including a display control unit having a display combining unit that displays one or a plurality of pathological index cursors based on information relating to a pathological slide image.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: November 10, 2020
    Assignee: SONY CORPORATION
    Inventor: Kenji Yamane
  • Patent number: 10823798
    Abstract: A medical imaging system comprising: a memory and a processor configured by machine executable instructions that cause the processor to: receive multiple magnetic resonance images, the multiple magnetic resonance images comprising voxels; calculate an image segmentation for each of the multiple magnetic resonance images, the image segmentation dividing each of the multiple magnetic resonance images into regions; assign a tissue classification to each of the regions using a magnetic resonance imaging tissue classifier; calculate a Hounsfield unit map for each of the multiple magnetic resonance images by assigning a Hounsfield unit value to each of the voxels according to the tissue classification, the Hounsfield mapping comprising a mapping between the tissue classification to Hounsfield units; and calculate a virtual CT image for each of the multiple magnetic resonance images using the Hounsfield unit mapping.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: November 3, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventor: Johan Samuel Van Den Brink
  • Patent number: 10809209
    Abstract: A measurement processing device used for an X-ray inspection device includes: a region information acquisition unit that acquires first region information based on X-rays passing through a first region that is a part of a first specimen; a storage unit that stores second region information related to a second region of a second specimen, the second region being larger than the first region; and a determination unit that determines whether or not a region corresponding to the first region is included in the second region, based on the first region information and the second region information.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: October 20, 2020
    Assignee: Nikon Corporation
    Inventors: Hirotomo Yashima, Fuminori Hayano, Akitoshi Kawai
  • Patent number: 10810334
    Abstract: The example embodiments are directed to a system and method for simulating an application performance using a test environment associated with an application marketplace where the application can be purchased. In one example, the method may include operating a virtual test environment which includes virtual hardware for testing software, receiving, from the application marketplace, information about an application and operating characteristics of a target installation environment for the application, executing the application via the virtual hardware of the virtual test environment based on the operating characteristics of the target installation environment to generate simulated test results of the application in the target installation environment, and outputting information of the simulated application test results for the target installation environment for display on a display device.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: October 20, 2020
    Assignee: General Electric Company
    Inventors: David Matthews, Joel Markham, Michael Yoensky, Amy Victoria Aragones, Austars Raymond Schnore, Jr.
  • Patent number: 10799190
    Abstract: The present disclosure provides a collimator. The collimator includes a slice module, a filter module, and a support and protection module. The slice module and the filter module are detachably connected with the support and protection module. The rays strike on the collimator and pass through the slice module and the filter module in order. The slice module is configured to adjust the fan-beam width of the rays striking on the collimator. The filter module is configured to make the rays pass through different filters to implement different types of scanning.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: October 13, 2020
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Guanghui Chen, Tian Xu, Ting Ye, Huaifang Jiang
  • Patent number: 10799203
    Abstract: A method and device for acquiring at least a part of an x-ray data set with at least one x-ray device. The x-ray data set includes at least one first x-ray image data set and at least one second x-ray image data set acquired separated in time that are to be evaluated together. Both x-ray image data sets show a region of interest of a patient that is subject to heart motion at different phases of a heart cycle. The second x-ray image data set is acquired triggered at a beginning of each heart cycle covered by the acquisition and with an acquisition rate such that the phases of the acquired x-ray image data set match phases of the first x-ray image data set.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: October 13, 2020
    Assignee: Siemens Healthcare GmbH
    Inventor: Andreas Meyer
  • Patent number: 10796481
    Abstract: Systems and methods are provided for generating a visualization of a lung fissure. Medical imaging data is processed to identify a lung mesh and fissures data. The lung mesh is augmented with the fissures data and projected onto a straight plane for rendering into a concise two-dimensional image in which completeness of the lung fissure may be detected.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: October 6, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Lutz Guendel, Atilla Kiraly, Bernhard Geiger, Carol L. Novak
  • Patent number: 10791998
    Abstract: The present invention relates to an X-ray image processing device and an X-ray image processing method using a small X-ray detector, in which the device includes a controller configured to control an X-ray source and an X-ray detector to obtain m (m is an integer of 2 or more) number of consecutive divided projection images at each of preset n (n is an integer of 1 or more) number of imaging angles while rotating around a rotary axis and facing each other, a projection image synthesizing unit configured to generate a synthetic projection image by synthesizing the m number of divided projection images obtained in correspondence to each imaging angle, and an image reconstructor configured to generate a reconstructed image by reconstructing the synthetic projection image.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: October 6, 2020
    Assignees: VATECH Co., Ltd., VATECH EWOO Holdings Co., Ltd.
    Inventors: Woong Bae, Sang Og Na, Sung Il Choi
  • Patent number: 10789738
    Abstract: An apparatus and method are provided for computed tomography (CT) imaging to reduce artifacts due to objects outside the field of view (FOV) of a reconstructed image. The artifacts are suppressed by using an iterative reconstruction method to minimize a cost function that includes a de-emphasis operator. The de-emphasis operator operates in the data domain, and minimizes the contributions of data inconsistencies arising from attenuation due to objects outside the FOV. This can be achieved by penalizing images that manifest indicia of artifacts due to outside objects especially those outside objects have high-attenuation densities and minimizing components of the data inconsistency likely attributable to the outside object.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: September 29, 2020
    Assignees: THE UNIVERSITY OF CHICAGO, CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Xiaochuan Pan, Zheng Zhang, Dan Xia, Yu-Bing Chang, Jingwu Yao, Joseph Manak
  • Patent number: 10776962
    Abstract: A system and method are provided for the reconstruction of medical image data using filtered backprojection with the use of a wavelet transformation. A filter function is applied to at least one part of an object using projection data captured with a detection device prior to backprojection.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: September 15, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Sebastian Bauer, Andreas Maier, Yan Xia
  • Patent number: 10769822
    Abstract: An X-ray CT apparatus according to an embodiment includes a photon counting detector, and processing circuitry. The photon counting detector includes a plurality of detecting elements each of which outputs signals corresponding to numbers of photons that are counted. The processing circuitry generates pieces of first projection data on a basis of the signals from the plurality of detecting elements. The processing circuitry generate second projection data by bundling together, in spatial units, pieces of first projection data from a predetermined number of detecting elements among the plurality of detecting elements. The processing circuitry reconstructs a material decomposition image on a basis of the second projection data.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: September 8, 2020
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Emi Tamura, Hiroaki Nakai
  • Patent number: 10765382
    Abstract: The present invention discloses a method for reconstructing dynamic PET concentration distribution image of dual-tracer based on stacked autoencoder. The invention introduces deep learning into dynamic tracer PET concentration distribution image reconstruction, and the process is mainly divided into two stages of training and reconstruction. In the training phase, train multiple autoencoders using the concentration distribution images of mixed tracers taken as input, and the concentration distribution images of the two tracers taken as labels to build the stacked autoencoder. In the reconstruction phase, the concentration distribution images of the individual tracer can be reconstructed by inputting the concentration distribution images of the mixed traces to the well trained stacked autoencoder.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: September 8, 2020
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Huafeng Liu, Dongsheng Ruan
  • Patent number: 10761038
    Abstract: Apparatus and method for detecting materials on a conveyor belt using multi-energy x-ray absorption imaging. A spectroscopic x-ray detector consisting of a line array of pixels receives x-rays from an x-ray source directed through the conveyor belt. The x-rays are attenuated as they pass through the belt and materials on the belt. The pixels each produce an energy spectrum of the received x-rays. The received energy spectrum of each pixel is related to the source x-ray spectrum to determine a measured attenuation, which is then related to an attenuation model that includes the attenuation coefficients of a set of preselected constituent materials expected to be in or on the belt. Mathematical regression is used to fit the measured attenuation to the attenuation model to find the thickness of each constituent material for each pixel.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: September 1, 2020
    Assignee: Laitram, L.L.C.
    Inventor: William S. Murray
  • Patent number: 10751014
    Abstract: A method includes receiving, from a volumetric imager, a first image including a target of a patient. The method further includes receiving a second image including the target of the patient. The method further includes tracking, by a processing device, a position of the target using the first image and the second image.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: August 25, 2020
    Assignee: Accuray Incorporated
    Inventors: Michael P. Naylor, Matthew Core, Petr Jordan, Calvin R. Maurer, Jr.
  • Patent number: 10736590
    Abstract: A method includes receiving radiation with a hybrid data detection system of an imaging system. The hybrid data detection system includes a hybrid data detector array with a set of spectral detectors and a set of integrating detectors that are arranged along a transverse axis of an examination region. The method further includes generating a set of truncated spectral projections with the first set of spectral detectors. The method further includes estimating a set of spectral projections for the integrating detectors. The method further includes combining the set of truncated spectral projections and the estimated set of spectral projections. The method further includes estimating a set of spectral projections based on the combined set to produce a complete set of spectral projections. The method further includes processing the complete set of spectral projections to generate volumetric image data.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: August 11, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Dirk Schafer, Michael Grass, Thomas Koehler, Roland Proksa
  • Patent number: 10740932
    Abstract: An image processing system (IPS) and related method for image reconstruction operations, in particular for spectral computed tomography imaging. The image reconstruction operation is based on optimizing a regularized objective or cost function. The objective function includes a regularization term (R) that incorporates, as a-priori knowledge, a known amount of a material resident within a field of view to be reconstructed.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: August 11, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Bernard Johannes Brendel, Michael Grass, Peter George Van De Haar, William Edward Peter Van Der Sterren
  • Patent number: 10737122
    Abstract: An image-guided radiotherapy system adapted to be juxtaposed adjacent a CT scanner comprises a frame having an orifice adapted to permit passage therethrough of a couch on which a patient is positioned, together with a gantry assembly rotatably mounted on the frame in which the gantry assembly comprises a shielding cylinder having an orifice therethrough in alignment with the orifice in the frame. The shielding cylinder has affixed thereto a linac-based treatment head configured to provide radiotherapy, and a beamstop positioned angularly opposite the treatment head to absorb radiation from the treatment head. The shielding cylinder provides sufficient shielding of radiation scattered from the patient and the remainder of the system to not require a conventional vault. In some embodiments an arch may be used instead of a cylinder.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: August 11, 2020
    Assignee: ETM Electromatic, Inc.
    Inventors: Georg Weidlich, William L. Nighan, Dennis Dore
  • Patent number: 10741247
    Abstract: A 3D memory array device includes blocks, bit lines, word lines, source lines (SL), complementary metal oxide semiconductors (COMS), and SL sensing amplifiers (SA). Each block includes NAND strings, and each memory cell in the NAND strings stores one or more weights. The bit lines are respectively coupled as signal inputs to string select lines in all blocks. The word lines are respectively coupled to the memory cells, and the word lines in the same layer are as a convolution layer to perform a convolution operation on the inputted signal. Different SL are coupled to all ground select lines in different blocks to independently collect a total current of the NAND strings in each block. The CMOS are disposed under the blocks and coupled to each source line for transferring the total current to each SL SA, and a multiply-accumulate result of each block is outputted via each SL SA.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: August 11, 2020
    Assignee: MACRONIX International Co., Ltd.
    Inventors: Teng-Hao Yeh, Hang-Ting Lue
  • Patent number: 10724969
    Abstract: An X-ray detection method and an X-ray detector are provided. The X-ray detection method according to embodiments of the present disclosure includes: dividing an energy range of photons emitted by an X-ray source into a number N of energy windows, where N is an integer greater than 0; obtaining a weighting factor for each of the number N of energy windows based on linear attenuation coefficients of a substance of interest and a background substance of an imaging target; obtaining a weighting factor matrix for M output channels of an X-ray detector based on the weighting factor for each of the number N of energy windows, where M is an integer greater than 0; and obtaining output results of the M output channels based on the weighting factor matrix and numbers of photons having an energy range falling into individual energy windows of the number N of energy windows.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: July 28, 2020
    Assignees: NUCTECH COMPANY LIMITED, TSINGHUA UNIVERSITY
    Inventors: Yuxiang Xing, Xiaoyue Guo, Zhi Deng, Le Shen, Li Zhang, Zhiqiang Chen, Liang Li
  • Patent number: 10722192
    Abstract: A variable stop apparatus for arrangement between an X-ray source and an object to be measured in a CT-scanner and a CT-scanner including the variable stop apparatus are provided. The variable stop apparatus includes a stop carrier that is pivotable about a pivot axis. The stop carrier has at least two stops. The at least two stops are in each case configured to be brought into a predetermined angular position by pivoting the stop carrier. The at least two stops are arranged at different longitudinal positions with respect to a longitudinal direction that is defined by the pivot axis.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: July 28, 2020
    Assignee: Carl Zeiss Industrielle Messtechnik GmbH
    Inventors: Marco Erler, Daniel Weiss, Wolfgang Kimmig, Martin Krenkel
  • Patent number: 10722178
    Abstract: A method for the reduction of motion artifacts in CT imaging, the method including the steps of: (a) reconstructing from the raw CT data an initial estimate of the object of interest; (b) estimating the pose of the object at each projection angle; (c) undertaking a motion-corrected reconstruction from the measured projections, accounting for the pose changes estimated in (b) by employing a modified source/detector orbit that accounts for the object motion; (d) iterating steps (b)-(c) until a predetermined convergence criterion is met; and (e) making a final reconstruction of the required image size using the pose estimates obtained in the previous steps.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: July 28, 2020
    Assignees: Western Sydney Local Health District, The University of Sydney, Katholieke Universiteit Leuven KU Leuven R&D
    Inventors: Roger Fulton, Johan Nuyts, Tao Sun, Jung-Ha Kim
  • Patent number: 10702235
    Abstract: A method may include obtaining an initial image that is captured by scanning a scan object using the imaging device. The method may also include performing an iteration process including one or more iterations. Each of the one or more iterations may include determining, according to a thickness model, an equivalent thickness associated with the scan object based on a brightness of a first image and the target brightness, determining one or more second exposure parameters corresponding to the equivalent thickness and the target brightness based on the thickness model, and generating a second image by directing the imaging device to scan the scan object based on the one or more second exposure parameters using the imaging device. The first image may be the initial image in a first iteration of the one or more iterations or an image generated in a previous iteration.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: July 7, 2020
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventor: Bing Tang
  • Patent number: 10702219
    Abstract: Methods and apparatus for determining radiation doses based on phantom matching are disclosed. An example apparatus includes an image processor to process a scout image to determine the first dimensions of an anatomical landmark of the scout image file; a comparator to select a phantom model based on the first dimensions, the phantom model including the anatomical landmark with second dimensions substantially similar to the first dimensions; and a dose calculator to calculate a radiation dose for an organ in the anatomical landmark based on the selected phantom.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: July 7, 2020
    Assignee: General Electric Company
    Inventors: David E. Miller, Pierre Guntzer
  • Patent number: 10706506
    Abstract: A method includes determining a low contrast detectability of a scan and generating an image quality index based on the determined low contrast detectability. Another method includes identifying an image quality index of interest, identifying an acquisition and/or reconstruction parameter based on the image quality index and a pre-determined mapping between image quality indexes and acquisition parameter and reconstruction parameters, and displaying the identified acquisition and/or the reconstruction parameter. A system (100) includes a metric determiner (122) that determines a first image quality index for a scan based on at least one of a low contrast detectability of the scan or a project domain noise of the scan, and/or a parameter recommender (126) that recommends at least one of an acquisition or a reconstruction parameter for a scan based on a second image quality index, and a display (114) that visually presents the first or second image quality index.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: July 7, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Amar Dhanantwari, Dhruv Mehta, Yael Nae
  • Patent number: 10695099
    Abstract: A system for use during a surgical procedure includes a control unit configured to obtain a first anatomical characteristic of a patient; measure a second anatomical characteristic of a patient; create a targeted second anatomical characteristic; and convert at least one of the measured second anatomical characteristic and the targeted second anatomical characteristics to a patient position.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: June 30, 2020
    Assignee: NuVasive, Inc.
    Inventor: Thomas Scholl