Computerized Tomography Patents (Class 378/4)
  • Patent number: 10342505
    Abstract: A method for adjusting a radiation dose during imaging of an object within a subject is provided. The method includes identifying a task in a first frame that contains the object, the first frame generated via exposing the subject to a radiation beam; and adjusting the radiation beam based at least in part on the task prior to generating a second frame that contains the object, the second frame generated via exposing the subject to the radiation beam.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: July 9, 2019
    Assignee: General Electric Company
    Inventors: Cyril Riddell, Régis Vaillant, Ketan Shrinkant Bacchuwar
  • Patent number: 10339675
    Abstract: A tomography method for generating a computed tomography (CT) image, including generating a first tomography image based on first raw data corresponding to a received X-ray comprising acquired photons; determining second raw data by generating a second tomography image having an increased resolution in comparison with the first tomography image and performing forward projection on the second tomography image; determining third raw data based on a first parameter, the first raw data, and the second raw data; and generating a third tomography image based on the third raw data, wherein the determining of the third raw data may be based on information about a distribution of the acquired photons, the information being included in at least one from among the first raw data and the second raw data.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: July 2, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-hwan Choi, Seok-min Han, Sang-wook Yoo, Jong-hyon Yi
  • Patent number: 10339634
    Abstract: The present disclosure relates to a system, method and storage medium for generating an image. At least one processor, when executing instructions, may perform one or more of the following operations. When raw data is received, a plurality of iterations may be implemented. During each iteration, a first voxel value relating to a first voxel in an image is calculated; at least a portion of a second voxel may be continuously changed with respect to at least a portion of the first voxel value; the image may be transformed to a projection domain to generate an estimated projection based on the first voxel value and the second voxel value; a projection error may be obtained based on the estimated projection and the raw data; and the image may be corrected or updated based on the projection error.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: July 2, 2019
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Lu Wang, Wenjing Cao
  • Patent number: 10335107
    Abstract: An image obtaining unit obtaining a plurality of projection images taken by imaging a subject with different radiation source positions. A pixel value projecting unit projects pixel values of the projection images on coordinate positions on a desired slice plane of the subject based on the positional relationship between the radiation source position with which each projection image is taken and the radiation detector, while preserving pixel values of the projection images. A pixel value calculating unit calculates a pixel value at each coordinate position of interest on the slice plane based on a plurality of pixel values of the projection images projected in a predetermined range relative to the coordinate position of interest on the slice plane to thereby generate a tomographic image of the slice plane.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: July 2, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Wataru Fukuda
  • Patent number: 10335112
    Abstract: In order to appropriately reduce time until scanning can be started after preparation in both an operation console and a scan room is completed, an X-ray CT apparatus includes an X-ray tube, an X-ray detector, a rotation disk, an image calculation device, a display device, a system control device, an operation console instruction device that instructs the system control device to prepare, start, and stop scanning in an operation console, and a scan gantry instruction device that instructs the system control device to prepare, start, and stop scanning in a scan room, in which the system control device includes a scanning preparation control unit that performs some scanning preparation processes among a plurality of scanning preparation processes on the basis of an instruction for scanning preparation from the operation console instruction device or the scan gantry instruction device.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: July 2, 2019
    Assignee: HITACHI, LTD.
    Inventor: Masato Nakayama
  • Patent number: 10339677
    Abstract: The present disclosure relates to systems and methods for image data processing. A first correction coefficient corresponding to a first collimation width of a collimator of a scanner may be obtained. The collimator may have a collimation width being adjustable. A relationship between scattered radiation intensities and collimation widths may be obtained. A relationship between correction coefficients and collimation widths may be determined based on the first correction coefficient, the first collimation width, and the relationship between scattered radiation intensities and collimation widths. A target collimation width of the collimator may be obtained. A target correction coefficient may be determined based on the target collimation width and the relationship between correction coefficients and collimation widths.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: July 2, 2019
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventor: Yao Yang
  • Patent number: 10339678
    Abstract: An improved system and method for estimating and compensating for motion by reducing motion artifacts produced during image reconstruction from helical computed tomography (CT) scan data. In a particular embodiment, the reconstruction may be based on helical partial angle reconstruction (PAR).
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: July 2, 2019
    Assignees: University of Central Florida Research Foundation, Inc., iTomography Corporation
    Inventors: Alexander Katsevich, Michael Frenkel
  • Patent number: 10327666
    Abstract: Apparatus and techniques are described herein for nuclear magnetic resonance (MR) projection imaging. Such projection imaging may be used to control radiation therapy delivery to a subject, such as including receiving reference imaging information, generating a two-dimensional (2D) projection image using imaging information obtained via nuclear magnetic resonance (MR) imaging, the 2D projection image corresponding to a specified projection direction, the specified projection direction including a path traversing at least a portion of an imaging subject, determining a change between the generated 2D projection image and the reference imaging information, and controlling delivery of the radiation therapy at least in part using the determined change between the obtained 2D projection image and the reference imaging information.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: June 25, 2019
    Assignee: Elekta, Inc.
    Inventors: Martin Emile Lachaine, Tony Falco
  • Patent number: 10318308
    Abstract: An arithmetic logic unit (ALU) including a first routing grid connected to multiple data lanes to drive first data to the data lanes. A second routing grid is connected to the data lanes to drive second data to the data lanes. Each of the data lanes include multiple, e.g. N, functional units with first inputs from the first routing grid and second inputs from the second routing grid. The functional units compute pairwise a function of the respective first data on the respective first inputs and the respective second data on the respective second inputs. Each of the data lanes include a reduction unit with inputs adapted to receive K? bits per word from the functional units. The reduction unit is configured to perform a reduction operation configured to output an output result having a reduced number J? bits per lane, wherein J? is less than N multiplied by K?.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: June 11, 2019
    Assignee: Mobileye Vision Technologies Ltd.
    Inventors: Gil Israel Dogon, Yosi Arbeli, Yosef Kreinin
  • Patent number: 10300304
    Abstract: An assembly for preventing an overdose of a charged particle beam during therapy to a patient includes a pixelated detector apparatus and a controller. The controller includes, for each pixel: a current integrator circuit that converts the local measured current into a total local detected charge integrated from a start time, the integrator circuit outputting an integrator voltage that corresponds to the total local detected charge; and a discriminator circuit that compares the integrator voltage with a reference voltage, the reference voltage corresponding to a maximum acceptable dose for the patient. A logic circuit generates an overdose fault signal if, at any of the pixels, the integrator voltage is higher than the reference voltage.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: May 28, 2019
    Assignee: Pyramid Technical Consultants Inc.
    Inventors: William P. Nett, John Gordon, Raymond Paul Boisseau
  • Patent number: 10289770
    Abstract: A method of performing structural analysis relating to a component having CAD-based geometry, refined CAD-based geometry and CAD-based FEA data associated therewith. The method includes scanning the component to obtain scan-based point cloud geometry of the component, aligning the scan-based point cloud geometry with the CAD-based geometry of the component, generating scan-based geometry of the component by refining the scan-based point cloud geometry, comparing the scan-based geometry with the refined CAD-based geometry of the component to quantify geometric differences therebetween, generating scan-based FEA geometry of the component by meshing the scan-based geometry, performing finite element analysis on the scan-based FEA geometry to obtain scan-based FEA data and comparing the scan-based FEA data with the CAD-based FEA data of the component to quantify the effect of geometric difference therebetween.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: May 14, 2019
    Assignee: Bell Helicopter Textron Inc.
    Inventors: Jonathan A. Knoll, Jeffrey P. Nissen, John R. McCullough
  • Patent number: 10288747
    Abstract: A radiation detection apparatus detects radiation and generates irradiation sensing information corresponding to a dose of detected radiation, senses whether radiation emitted from a radiation generator is detected, based on the generated irradiation sensing information, and receives a control signal from a controller. The apparatus switches detectability for detection of the radiation based on a control signal received from the controller.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: May 14, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Toshikazu Tamura, Taro Hiroike
  • Patent number: 10282872
    Abstract: A method is provided for reducing noise in a tomogram and/or volume rendering of at least one object. The noise can occur when scattered radiation artifacts are corrected. At least one tomogram that is affected by scattered radiation and at least one preliminary tomogram that has been corrected by a defined correction method are produced from a plurality of projection image datasets that are affected by scattered radiation. The noise emerging when scattered radiation artifacts are corrected may be reduced by selectively smoothening the noise using a filter based on an edge contour of the at least one object, which contour is rendered in the tomogram that is affected by scattered radiation.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: May 7, 2019
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventors: Frank Dennerlein, Matthias Goldammer, Michael Schrapp, Karsten Schoerner, Juergen Stephan
  • Patent number: 10278666
    Abstract: X-ray imaging systems and methods for exposure control in three-dimensional X-ray imaging include acquiring at least one image with an X-ray emitter and an X-ray receiver. At least one physical characteristic of the object to be imaged is determined from the at least one image. At least one exposure parameter value based is determined based upon the at least one physical characteristic of the object to be imaged. The X-ray emitter and X-ray receiver acquire a plurality of projection images about the object to be imaged using at least one exposure parameter value. A three-dimensional X-ray image is reconstructed from the plurality of projection images.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: May 7, 2019
    Assignee: PaloDEx Group Oy
    Inventors: Esa Eronen, Markus Rintamäki, Martti Kalke
  • Patent number: 10282869
    Abstract: A CT image reconstruction system is provided that provides a solution to a few-view problem by generating a 3D image from measurements and a forward projection matrix for a CT scan of an object that tends to minimize streaks and other artifacts. The system initially receives measurements and a forward projection matrix for the CT scan. The system during an initial stage generates an initial 3D image based on various constraints so that (1) the reconstruction of the initial 3D image can be perform quickly and (2) the difference between the measurements and the forward projection of the initial 3D image has significantly lower contrast and high frequency content as compared the measurements themselves. The system then during a final stage applies an iterative algorithm to reconstruct the 3D image with the 3D image initialized to the initial 3D image at the beginning of the iterative algorithm.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: May 7, 2019
    Assignee: Lawrence Livermore National Security, LLC
    Inventor: Kyle Champley
  • Patent number: 10271801
    Abstract: Disclosed are a radiation imaging system, an image processing device, and a non-transitory computer-readable recording medium having an image processing program recorded thereon which facilitate the confirmation of a positional relationship between an object of interest and a biopsy needle. A control unit of a console reconstructs a projection image obtained by tomosynthesis imaging to generate a tomographic image parallel (an x-y-axis direction) to an imaging surface in a state where a needle is inserted into a breast, and specifies an image of an object of interest from the tomographic image. The control unit generates a sectional image which includes the specified image of the object of interest and an image of the needle and intersects the imaging surface. The control unit generates an image of the needle from the projection image, synthesizes the generated image of the needle into the sectional image while aligning, and displays the sectional image.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: April 30, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Hiroki Nakayama, Tomoki Inoue
  • Patent number: 10251548
    Abstract: The position of the fovea is estimated with high accuracy in a manner such that the thicknesses of a first region including at least a partial region of a region from the internal limiting membrane to the boundary between the external plexiform layer and the external granular layer and a second region including at least a partial region of a region from the boundary to the photoreceptor cell inner segment/outer segment junction are compared with each other, and the position of the fovea is estimated.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: April 9, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Sekiguchi, Akihito Uji, Daisuke Kawase
  • Patent number: 10255694
    Abstract: The present disclosure relates to systems and methods for reconstructing an Emission Computed Tomography (ECT) image. The systems, having at least one machine each of which has at least one processor and storage, may perform the methods to obtain ECT projection data, the ECT projection data corresponding to a plurality of voxels; determine a plurality of gate numbers for the plurality of voxels, the plurality of gate numbers relating to motion information of the plurality of voxels; and reconstruct an ECT image based on the ECT projection data and the plurality of gate numbers.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: April 9, 2019
    Assignee: UIH AMERICA, INC.
    Inventors: Tao Feng, Wentao Zhu, Hongdi Li
  • Patent number: 10255697
    Abstract: A method and related apparatus (VS) for synthesizing a projection image (S), in particular for use in mammography. It is proposed to compute a weight function from one image volume (V1) and is then used to implement a weighted forward projection through another image volume block to compute a synthesized projection image (S) across block (V2).
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: April 9, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Hanno Heyke Homann, Klaus Erhard
  • Patent number: 10255671
    Abstract: Methods and systems for efficient inspection that provide a record and enable remote inspection. The system of these teachings includes a source of electromagnetic radiation, a first aiming subsystem optically operatively disposed to receive the electromagnetic radiation from the source of electromagnetic radiation, the first aiming subsystem optically aiming the electromagnetic radiation onto a surface on which an object is disposed, an image acquisition component, a second aiming subsystem optically operatively disposed such that the second aiming subsystem aims an optical field of the image acquisition component to locations on the surface on which the object is disposed, and a computing component configured to establish the object, the first aiming subsystem and the second aiming subsystem in a common coordinate system, wherein the optical field of the image acquisition is aimed at regions illuminated by the electromagnetic radiation.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: April 9, 2019
    Assignee: ASSEMBLY GUIDANCE SYSTEMS, INC.
    Inventors: Matthew Zmijewski, Scott W. Blake, Eric Eisack, Robert Luoma
  • Patent number: 10249037
    Abstract: An echogenicity quantification method and a calibration method for ultrasonic device using echogenicity index are disclosed.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: April 2, 2019
    Assignee: AMCAD BIOMED CORPORATION
    Inventors: King-Jen Chang, Chiung-Nein Chen, Ming-Hsun Wu, Argon Chen, Yu-Hsin Wang, Kuo-Chen Huang
  • Patent number: 10231684
    Abstract: An imaging system (100) includes a radiation source (108) that emits radiation that traverses an examination region and imageable drug eluting beads in tissue of interest located therein, a spectral detector array (110) detects radiation traversing the examination region and generates a signal indicative thereof, spectral processing circuitry (117) that spectrally resolves the signal based on a plurality of thresholds (122), and a reconstructor (128) that generates spectral volumetric image data corresponding the imageable drug eluting beads based on the spectrally resolved signal.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: March 19, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Ming De Lin, Ewald Roessl, Carsten Oliver Schirra
  • Patent number: 10228435
    Abstract: A method for tagged magnetic resonance imaging is disclosed. The method includes steps of tagging an object with polar tagging patterns; acquiring data in a spatial frequency domain of the tagged object with a polar sampling pattern; and reconstructing an image of the object through a polar Fourier transform of the data acquired in the step of acquiring data.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: March 12, 2019
    Inventors: Abbas Nasiraei Moghaddam, Shokoufeh Golshani
  • Patent number: 10219772
    Abstract: The invention relates to tomographic imaging device (1). The device (1) comprises a radiation detector (3) for measuring radiation traveling through an object to be imaged, the radiation detector (3) being configured to measure radiation only at a plurality of selected sampling positions on a curved track around an axis (z). A planning unit (12) is configured to determine the selected sampling positions on the basis of an estimated contour (44; 53) of the object (21) in a plane (x-y) substantially perpendicular to the axis (z). Further, the invention relates to a method for operating the device (1). The invention is particularly applicable in computed tomography imaging.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: March 5, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Michael Grass, Thomas Koehler
  • Patent number: 10217248
    Abstract: Embodiments of the present invention disclose a method for removing streaks from detector cells with performance difference, specifically a method for removing streaks from detector cells with performance difference and streaks caused by other reasons. The method comprises: estimating a projection on a detector cell with performance difference for each of one or more views; reconstructing one or more initial images with the estimated projection on the detector cell with performance difference for each view; estimating a projection error on the detector cell with performance difference for each view from the reconstructed one or more initial images having streaks; and reconstructing one or more output images with the estimated projection error on the detector cell with performance difference for each view to remove the streaks from the reconstructed one or more output images, improving quality of CT reconstructed images.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: February 26, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Ming Yan, Kun Tao, Hao Xu
  • Patent number: 10213176
    Abstract: A method and apparatus is provided to iteratively reconstruct a computed tomography (CT) image using a hybrid pre-log and post-log iterative reconstruction method. A pre-log formulation is applied to values of the projection data that are less than a threshold (e.g., X-ray intensities corresponding to high absorption trajectories). The pre-log formulation has better noise modeling and better image quality for reconstructed images, but is slow to converge. Projection data values above the threshold are processed using a post-log formulation, which has fast convergence but poorer noise handling. However, the poorer noise handling has little effect on high value projection data. Thus, the hybrid pre-log and post-log method provides improved image quality by more accurately modeling the noise of low count projection data, without sacrificing the fast convergence of the post-log method, which is applied to high-count projection data.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: February 26, 2019
    Assignees: TOSHIBA MEDICAL SYSTEMS CORPORATION, The Regents of the University of California
    Inventors: Jinyi Qi, Guobao Wang, Wenli Wang, Jian Zhou, Zhou Yu
  • Patent number: 10213170
    Abstract: The invention relates to positioning of partial volumes of an anatomy in connection with an imaging process. According to the invention, a photograph is taken of an object arranged in an imaging station by a camera arranged in connection with the imaging station, which image of the anatomy is presented on a display but as transferred into a new position with respect to the imaging station. When this image and a substantially real time image taken of the imaging station are presented on a display one upon another, it is possible to follow on the display how the object being imaged positions in relation to said image taken of the anatomy transferred into the new position.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: February 26, 2019
    Assignee: PLANMED OY
    Inventors: Juhamatti Malm, Tapio Laukkanen
  • Patent number: 10213179
    Abstract: Provided are a tomography apparatus and a method for reconstructing a tomography image. The method includes obtaining a plurality of raw data corresponding to a plurality of views by performing a tomography scan on an object and deblurring each of the plurality of raw data based on a point spread function (PSF) that varies according to locations in a field of view (FOV) in a gantry. The method also includes reconstructing a final tomography image in which a motion of the object is corrected from the plurality of deblurred raw data based on a motion vector indicating the motion of the object.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: February 26, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-hyon Yi, Toshihiro Rifu, Ajay Narayanan, Alexander Zamyatin, Seok-min Han
  • Patent number: 10216866
    Abstract: Systems and methods for modeling are provided. The method can include acquiring scan data associated with a plurality of x-ray projections of an item. The method can further include determining at least one closed boundary curve associated with the item. For example, the method can determine a first maximum area based on the scan data and determine at least one edge of the first maximum area. The method can further generate a model of the item using the closed boundary curve and a first material specific parameter for a material within the closed boundary curve. The method can utilize the model to generate computed scan data, compare the computed scan data to the scan data, and determine a goodness of fit. The method can further adjust the model of the item by altering at least one of the closed boundary curve and the material specific parameter.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: February 26, 2019
    Assignee: Smiths Heimann GMBH
    Inventors: Matthias Muenster, Pia Dreiseitel
  • Patent number: 10206634
    Abstract: A method and device for X-ray scanning based on dose, comprising: receiving an X-ray dose for scanning set for a region of a subject to be scanned, selecting a scanning and reconstructing technology combination according to said pre-set X-ray dose for scanning wherein the demanded X-ray dose of the selected scanning and reconstructing technology combination satisfies said pre-set X-ray dose for scanning, and scanning said region and implementing a reconstruction accordingly with the selected scanning and reconstructing technology combination to obtain a resultant scanning image.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: February 19, 2019
    Assignee: Shenyang Neusoft Medical Systems Co., Ltd.
    Inventors: Shuangxue Li, Ling Pang
  • Patent number: 10210632
    Abstract: A method for reconstructing image data during CT imaging is described. In the method, a plurality of independent data records of projection measured data are captured. A combined data record is then determined based on the captured data records. In addition, morphological information is determined based on the combined data record. A target data record is also determined based on the captured independent data records. A target image data record is reconstructed based on the target data record and the determined morphological information. An image data determination facility and a computed tomography system are also described.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: February 19, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Thomas Flohr, Steffen Kappler, Rainer Raupach, Harald Schöndube
  • Patent number: 10210653
    Abstract: A method and apparatus to generate a volume-panorama image are provided. A method of generating a volume-panorama image includes receiving conversion relationships between volume images, one of the received conversion relationships being between a first volume image of the volume images and a second volume image of the volume images, the second volume image including an area that is common to an area of the first volume image, generating an optimized conversion relationship from the one of the received conversion relationships based on the received conversion relationships, and generating the volume-panorama image based on the generated optimized conversion relationship.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: February 19, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ouk Choi, Hwa-sup Lim, Jung-ho Kim, Do-kyoon Kim
  • Patent number: 10204427
    Abstract: A system and method for air calibration in a Computed Tomography (CT) imaging system are provided. A first set of data associated with air in a scanning area may be obtained. A second set of data associated with an object in the scanning area may be obtained. The second set of data based on the first set of data may be calibrated, and a set of reference values generated by a neural network model may be used to perform the calibration. A third set of data based on the calibration of the second set of data may be generated. Based on the third set of data, a CT image of the object may be generated.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: February 12, 2019
    Assignee: SHENZHEN UNITED IMAGING HEALTHCARE CO., LTD.
    Inventor: Dier Zhang
  • Patent number: 10201389
    Abstract: The present disclosure relates to a system and method of providing surgical assistance. The method includes obtaining a 3D space including an organ and a lesion located within the organ. Based on a shape of the organ, a grid is overlaid on a surface of the organ. The lesion is projected at a first location on an overlaid grid. A graphical tool disposed in a first orientation is positioned at the first location in the 3D space, and a plurality of parameter values of the lesion corresponding to the first orientation of the graphical tool are displayed in the 3D space. The graphical tool is manipulated to be disposed in a second orientation at a second location on the overlaid grid, and the plurality of parameter values of the lesion corresponding to the second orientation of the graphical tool are displayed in the 3D space.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: February 12, 2019
    Assignee: EDDA TECHNOLOGY, INC.
    Inventors: Cheng-Chung Liang, Guo-Qing Wei, Li Fan, Xiaolan Zeng, Jianzhong Qian
  • Patent number: 10194884
    Abstract: A method for reducing image artifacts caused, for example, by beam hardening includes acquiring at least two projections of a transirradiated object are acquired from different perspectives by an X-ray emitter and an X-ray detector defining a projection plane. A correction model that is linear in parameters and is valid for the at least two projections is determined. At least two epipolar lines corresponding to a common epipolar plane are identified in the projection planes of the at least two projections. The parameters of the correction model are determined by optimization, taking account of data terms that are independent of the parameters. The data terms quantify a consistency condition of the at least two projections that applies to the epipolar lines. Artifact-reduced image data is determined based on the determined parameters.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: February 5, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Nicole Maaß, Andreas Maier, Tobias Würfl
  • Patent number: 10183329
    Abstract: Methods and apparatuses to fabricate additive manufactured parts with in-process monitoring are described. As parts are formed layer-by-layer, a 3D measurement of each layer or layer group may be acquired. The acquisition of dimensional data may be performed at least partially in parallel with the formation of layers. The dimensional data may be accumulated until the part is fully formed, resulting in a part that was completely inspected as it was built. The as-built measurement data may be compared to the input geometrical description of the desired part shape. Where the part fails to meet tolerance, it may be amended during the build process or rejected.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: January 22, 2019
    Assignee: The Boeing Company
    Inventor: Steven Matthew Gunther
  • Patent number: 10181074
    Abstract: The automated positioning of an examination table relative to a medical-technical imaging installation is provided. A camera image is frozen by a first user interaction. Reference information is defined in the frozen camera image by a second user interaction. An examination table or medical-technical imaging installation with the aid of a positioning system is moved based on congruence between the reference location information with a recording region of the medical-technical imaging installation.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: January 15, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Christoph Braun, Thilo Hannemann, Johann Uebler
  • Patent number: 10176602
    Abstract: There is provided a method of image reconstruction based on energy-resolved image data from a photon-counting multi-bin detector or an intermediate storage. The method includes processing (S1) the energy-resolved image data by performing at least two separate basis decompositions using different number of basis functions for modeling linear attenuation, wherein a first basis decomposition is performed using a first smaller set of basis functions to obtain at least one first basis image representation, and wherein a second basis decomposition is performed using a second larger set of basis functions to obtain at least one second basis image representation. The method also includes reconstructing a first image based on the at least one first basis image representation obtained from the first basis decomposition, and combining the first image with information representative of the at least one second basis image representation.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: January 8, 2019
    Assignee: PRISMATIC SENSORS AB
    Inventors: Fredrik Gronberg, Mats Persson, Hans Bornefalk
  • Patent number: 10165995
    Abstract: A method for performing Photon Counting Computed Tomography (PCCT) using a combination of contrast agents includes configuring a PCCT device with a plurality of threshold values corresponding to a plurality of contrast agents. These contrast agents comprise a long-acting blood pool contrast agent and a nanoparticle contrast agent. The PCCT device is used to perform an imaging scan on an anatomical subject in the presence of the plurality of contrast agents to acquire image data. Next, the imaging data is processed into a plurality of datasets based on the plurality of threshold values. The datasets comprise a first dataset corresponding to the long-acting blood pool contrast agent, and a second dataset corresponding to the nanoparticle contrast agent.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: January 1, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Christian D. Eusemann, Matthew Kyle Fuld
  • Patent number: 10163206
    Abstract: The present invention provides an apparatus and method for beam hardening artifact correction of CT image, comprising a bone tissue image obtain module, a first correction module, an orthographic projection module, and a correction image obtaining module. The bone tissue image obtain module is used to extract a bone tissue image from a reconstructed original image; the first correction module is used to increase a current CT value of the bone tissue image; the orthographic projection module is used to perform an orthographic projection on the bone tissue image with the CT value being increased to obtain an orthographic projection data of the bone tissue image; the correction image obtaining module is used to perform image reconstruction according to the orthographic projection data of the bone tissue image described above and obtain a correction image.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: December 25, 2018
    Assignee: General Electric Company
    Inventors: Ximiao Cao, Jiang Hsieh, Xueli Wang
  • Patent number: 10163200
    Abstract: This disclosure relates to a system and method for detecting an item having at least one symmetry property inside an inspection object based on at least one transmission image. The method includes the steps: (a) detection of edges of individual items contained in the transmission image in order to produce an edge image; and (b) detection of the item by determining a symmetry line that can be associated with an item with at least one symmetry property contained in the transmission image based on pairs of edge picture elements of the edge image that are positioned symmetrically to each other relative to the symmetry line; and in step (b), in determining the symmetry line in the edge image, the only edge picture elements that are taken into account are those for which the symmetry line lies in an item contained in the transmission image, to which item the edge belongs.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: December 25, 2018
    Assignee: SMITHS HEIMANN GMBH
    Inventor: Geert Heilmann
  • Patent number: 10163232
    Abstract: A tomography system having a central processing unit, a system memory communicatively connected to the central processing unit, and a hardware acceleration unit communicatively connected to the central processing unit and the system memory, the hardware accelerator configured to perform at least a portion of an MBIR process on computer tomography data. The hardware accelerator unit may include one or more voxel evaluation modules which evaluate an updated value of a voxel given a voxel location in a reconstructed volume. By processing voxel data for voxels in a voxel neighborhood, processing time is reduces.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: December 25, 2018
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Junshi Liu, Swagath Venkataramani, Singanallur V. Venkatakrishnan, Charles A. Bouman, Anand Raghunathan
  • Patent number: 10156529
    Abstract: To know an absorption and diffusion state with time of drainage. In a state in which an absorbent article is put on a human body type dummy doll equipped with a body fluid-supplying means, the absorbent article is photographed after the fluid is excreted from the dummy doll by an X-ray CT apparatus; and at least one absorption modes of absorption modes of the drainage into the absorbent article after the excretion in the state in which the absorbent article is put on the dummy doll, and absorption dynamics of the drainage on the absorbent article after the excretion is displayed/analyzed based on the photographed image.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: December 18, 2018
    Assignees: DAIO PAPER CORPORATION, NATIONAL UNIVEERSITY CORPORATION TOTTORI UNIVERSITY
    Inventors: Bin Nakayama, Yoshiko Suyama, Kaori Fujii, Junichi Kishimoto, Toshio Sakou, Aya Ohshima
  • Patent number: 10154784
    Abstract: A speed measuring device with an optical coherence tomography is provided. The speed measuring device includes an optical coherence tomography that obtains an tomographic image of a sample, a motion contrast calculator, a waveform creator that creates a motion contrast wave indicating chronological change of motion contrast, a time lag calculator, a distance calculator that calculates the blood vessel distance in a sample, and a speed calculator that calculates speed of a pulse wave transmitted inside the blood vessel.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: December 18, 2018
    Assignee: TOMEY CORPORATION
    Inventors: Franck E.M. Jaillon, Naoko Hara, Tsutomu Ohmori
  • Patent number: 10152774
    Abstract: The present disclosure relates to a method and device for estimating a point spread function. In one implementation, a method includes capturing, by a scanning device, an image by scanning a plurality of rectangle blocks which are same sized and closely arranged, wherein the plurality of rectangle blocks are made of different materials and/or have different mass thicknesses, and an incident direction of rays is perpendicular to a scanning direction and a surface of the plurality of rectangle blocks arranged closely during scanning; obtaining line spread functions for two directions along a length side and a width side of each of the rectangle blocks based on the scanned image, and obtaining standard deviation parameters of the line spread functions; and combining the standard deviation parameters for the two directions to obtain a two dimensional Point Spread Function (PSF) parameter so as to estimate the point spread function.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: December 11, 2018
    Assignees: Tsinghua University, Nuctech Company Limited
    Inventors: Kejun Kang, Zhiqiang Chen, Yuanjing Li, Li Zhang, Ziran Zhao, Yaohong Liu, Jianping Gu, Zhiming Wang
  • Patent number: 10143417
    Abstract: There is provided an arrangement (100) for enabling assessment of scoliosis. The arrangement (100) is configured to obtain at least one x-ray image by means of one or more photon-counting x-ray detectors. The arrangement (100) is further configured to determine at least one characteristic of the spine of a patient having possible scoliosis based on said at least one x-ray image obtained by means of the photon-counting x-ray detector(s) to enable assessment of scoliosis.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: December 4, 2018
    Assignee: PRISMATIC SENSORS AB
    Inventors: Mats Danielsson, Xuejin Liu, Martin Sjolin
  • Patent number: 10143434
    Abstract: The invention relates to an imaging system (17) like a computed tomography system for generating an image of an object. Spectral measured projection data and non-spectral measured projection data are generated by a detector (6) having spectral detection elements and non-spectral detection elements, and spectral estimated projection data are estimated by using a model material distribution which could have caused the non-spectral measured projection data and by simulating a measurement of the spectral estimated projection data based on the model material distribution. An image is reconstructed based on the measured and estimated spectral projection data. Using the spectral estimated projection data in addition to the spectral measured projection data can lead to high quality spectral imaging, especially high quality spectral computed tomography imaging, which uses a simplified detector not only having generally more complex spectral detection elements, but also having simpler non-spectral detection elements.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: December 4, 2018
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Roland Proksa, Thomas Koehler
  • Patent number: 10134156
    Abstract: In a method and an evaluation device for the evaluation of projection data of an object being examined, which are determined along a trajectory in a multiplicity of projection positions relative to a co-ordinate origin, a particular trajectory function is determined for the projection positions, for each of a multiplicity of positions from a reconstruction region of dimension n by establishing an offset (d) and a direction vector at the co-ordinate origin, establishing a hyperplane of dimension n?1 which runs perpendicular to the direction vector and has an offset to the co-ordinate origin, establishing a number of intersection points where the hyperplane intersects the trajectory, establishing a derivative vector of the trajectory according to its trajectory path and calculating the derivative vector in the projection position, and establishing an absolute value of a scalar product between the derivative vector and the position and dividing the absolute value by the number.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: November 20, 2018
    Assignees: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Universität des Saarlandes
    Inventors: Steven Oeckl, Alfred K. Louis, Tobias Schön
  • Patent number: 10134155
    Abstract: Embodiments of the present disclosure are directed to a system for generating three-dimensional images of a target region of a patient. The system may include at least one computer system. The computer system may be configured to receive a plurality of non-parallel projection images of the target region of the patient, convert the plurality of non-parallel projection images into a non-spatial domain, reconstruct a three-dimensional image from the plurality of non-parallel projection images in the non-spatial domain, and convert the reconstructed three-dimensional image from the non-spatial domain to the spatial domain.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: November 20, 2018
    Assignee: Elekta Limited
    Inventor: Martin Emile Lachaine
  • Patent number: 10092266
    Abstract: A method for correcting a CT scan image is provided. A target image including a target region to be corrected is extracted from an original CT scan image. A target projection range corresponding to the target region is obtained by orthographically projecting the target image, and target projection data within the target projection range is corrected. Noise of the corrected target projection data is adjusted to generate noise-adjusted target projection data to improve noise consistency between target region and the rest of the CT scan image. A corrected CT scan image is reconstructed based on the noise-adjusted target projection data.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: October 9, 2018
    Assignee: Shenyang Neusoft Medical Systems Co., Ltd.
    Inventors: Ling Pang, Junlong Han, Shanshan Lou