Beam Detection System Patents (Class 378/19)
  • Patent number: 10932737
    Abstract: A hybrid imaging system is disclosed including an arcuate arm defining a first and a second end the arcuate arm including a first detector assembly for 2D x-ray imaging of a patient and a second detector assembly for CT imaging of the patient, wherein the imaging system includes an internal drive mechanism for rotating the arcuate arm (e.g. translating the arcuate arm along an arcuate path) around the patient.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: March 2, 2021
    Assignee: Dedicated2Imaging, LLC
    Inventors: Eric M. Bailey, Andrew Tybinkowski
  • Patent number: 10935691
    Abstract: The present disclosure relates to the technical field of CT detection, and in particular to a CT inspection system and a CT imaging method. The CT inspection system provided by the present disclosure comprises a radioactive source device, a detection device, a rotation monitoring device and an imaging device, wherein the detection device obtains detection data at a frequency that is N times a beam emitting frequency of the radioactive source device; the rotation monitoring device detects a rotation angle of the detection device and transmits a signal to the imaging device each time the detection device rotates by a preset angle; the imaging device determines a rotational position of the detection device each time the radioactive source device emits a beam according to the signal transmitted by the rotation monitoring device and the detection data of the detection device.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: March 2, 2021
    Inventors: Kejun Kang, Jianmin Li, Xiulin Ni, Yulan Li, Yuanjing Li, Zhiqiang Chen, Li Zhang, Liang Li, Xiang Zou, Weifeng Yu, Hejun Zhou, Chunguang Zong
  • Patent number: 10908301
    Abstract: A radiation monitor according to the present invention includes: a radiation sensing unit which includes phosphors emitting a photon with respect to an incident radiation; and a photon sending unit which sends the photon emitted from the phosphors of the radiation sensing unit, wherein the phosphors form a multilayer structure including a first phosphor and a second phosphor, and a photon absorbing layer absorbing a photon emitted from a phosphor is provided between the first phosphor and the second phosphor.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: February 2, 2021
    Assignee: HITACHI, LTD.
    Inventors: Shuichi Hatakeyama, Takahiro Tadokoro, Yuichiro Ueno, Yasushi Nagumo, Katsunori Ueno, Kouichi Okada
  • Patent number: 10898159
    Abstract: The present disclosure relates to determining the position of an X-ray focal spot in real time during an imaging process and using the focal spot position to ensure alignment of the focal spot and high-aspect detector elements or to correct for focal spot misalignment, thereby mitigating image artifacts. For example, the focal spot position may be monitored and may be adjusted in real-time using electromagnetic electron beam steering during a scan. Alternatively, previously determined functional relationships between focal spot position and measured data may be applied to address or correct for focal spot misalignment in the acquired data.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: January 26, 2021
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Peter Michael Edic, Biju Jacob
  • Patent number: 10891715
    Abstract: A method for generating a super-resolved high-resolution image based on a low-resolution image is provided. The method includes receiving a low-resolution image having a first image size from a camera, and determining an interpolated image of the low-resolution image. The interpolated image has a second image size being greater than the first image size. The method also includes determining a high-resolution super-resolved image based on the interpolated image and model data. The model data is stored on memory hardware. The method also includes displaying, on a user interface, the high-resolution super-resolved image.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: January 12, 2021
    Assignee: Continental Automotive Systems, Inc.
    Inventor: Dalong Li
  • Patent number: 10891764
    Abstract: A control unit of a console acquires a plurality of projection images obtained by irradiating a subject disposed between a radiation source and a radiation detector with radiation emitted from the radiation source at different irradiation angles and capturing the radiation with the radiation detector at each of the irradiation angles and decomposes each of the plurality of projection images into a plurality of first projection images with a low-frequency component lower than a predetermined spatial frequency and a plurality of second projection images with a high-frequency component higher than the predetermined spatial frequency. The control unit generates a pseudo two-dimensional image using a plurality of first tomographic images and a plurality of second tomographic images.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: January 12, 2021
    Assignee: FUJIFILM Corporation
    Inventor: Wataru Fukuda
  • Patent number: 10881367
    Abstract: Methods, devices, systems and apparatus for arranging detector sub-modules in a medical device are provided. In one aspect, a detector includes a housing and a plurality of detector modules arranged in parallel along a direction on the housing and configured to detect rays emitted from a radiation source and attenuated by a subject. Each of the plurality of detector modules includes a support extending in the direction and a plurality of detector sub-modules arranged on the support along the direction. A top surface of each of the plurality of detector sub-modules is tangent to a respective spherical surface of a corresponding target sphere of at least two target spheres having different radiuses, and a respective sphere center of each of the at least two target spheres is substantially overlapped with a focal spot of the radiation source.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: January 5, 2021
    Assignee: Neusoft Medical Systems Co., Ltd.
    Inventors: Jun Yu, Shuangxue Li, Shanshan Lou
  • Patent number: 10869646
    Abstract: An apparatus and method are described using a forward model to correct pulse pileup in spectrally resolved X-ray projection data from photon-counting detectors (PCDs). To calibrate the forward model, which represents each order of pileup using a respective pileup response matrix (PRM), an optimization search determines the elements of the PRMs that optimize an objective function measuring agreement between the spectra of recorded counts affected by pulse pileup and the estimated counts generated using forward model of pulse pileup. The spectrum of the recorded counts in the projection data is corrected using the calibrated forward model, by determining an argument value that optimizes the objective function, the argument being either a corrected X-ray spectrum or the projection lengths of a material decomposition. Images for material components of the material decomposition are then reconstructed using the corrected projection data.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: December 22, 2020
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Jian Zhou, Zhou Yu, Yan Liu
  • Patent number: 10854327
    Abstract: This diagnostic imaging system is configured to create report data including a diagnostic image and an analysis result as image data and create sample data including a sampling position and an analysis result as document data.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: December 1, 2020
    Assignee: Shimadzu Corporation
    Inventors: Shunsuke Kajiki, Daisuke Notohara
  • Patent number: 10837925
    Abstract: An X-ray detector monitoring device capable of detecting a time when an X-ray detector is disabled due to a slow leak is provided. The X-ray detector monitoring device is provided with an X-ray detection element 32 for detecting X-ray intensity, an X-ray detector 30 having a vacuum insulation container 33 in which an X-ray introduction window 31 is formed, a cooling means 60 for cooling the X-ray detection element 32, a detection element temperature sensor 81 mounted on the X-ray detection element 32 to output detection element temperature information Tt by detecting a temperature of an X-ray detection element 32, and a control unit 40 and 70 configured to calculate an output value for controlling the cooling means 60 to output the output value to the cooling means 60 so that the detection element temperature information Tt becomes a preset temperature TS. The control unit 40 and 70 is configured to detect a vacuum state of the vacuum insulation container 33 based on the output value.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: November 17, 2020
    Assignee: Shimadzu Corporation
    Inventors: Keijiro Suzuki, Takao Marui
  • Patent number: 10813600
    Abstract: A method of an image processing apparatus for identifying a type of adipose body tissue within a subject, based on performing a spectral computed tomography (CT) scan of a region of interest of the subject; and using a combination of different image processing techniques to differentiate between at least two adipose tissue types within the region of interest.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: October 27, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Roland Proksa, Heiner Daerr, Daniela Franz
  • Patent number: 10813605
    Abstract: A first position setting unit receives an operation to designate a position in a mesiodistal on a panoramic tomographic image displayed on a display, and sets a first position on a curved section based on the designation operation. The fluoroscopic imaging information providing unit provides information irradiating a subject with an X-ray beam along a direction having a component of a tangential direction at the first position of the curved section to execute fluoroscopic imaging acquiring a fluoroscopic image to a main body. A second position setting unit receives an operation to designate a position in a buccolingual direction on the fluoroscopic image displayed on the display, and sets a second position in the buccolingual direction based on the designation operation.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: October 27, 2020
    Assignees: J. MORITA MANUFACTURING CORPORATION, NIHON UNIVERSITY
    Inventors: Yoshinori Arai, Hideki Yoshikawa
  • Patent number: 10813604
    Abstract: An apparatus having an x-ray source and an x-ray detector configured to be rotated about a standing patient to capture and store a plurality of radiographic images of the patient during the rotation. A portable enclosure surrounds the source, the detector and the patient.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: October 27, 2020
    Assignee: Carestream Health, Inc.
    Inventors: Richard A. Simon, Nathan J. Packard
  • Patent number: 10806372
    Abstract: A method of evaluating airway wall density and inflammation including: segmenting a bronchial tree to create an airway wall map; for each branch, taking a set of locations that form the wall of each branch from the map and sampling the value in a virtual non-contrast image of the bronchial tree and, given a set of samples of pre-contrast densities, computing a value to yield a bronchial wall density for each branch to yield density measures; for each branch, taking the set of locations that form the wall of each branch from the map and sampling the value in a contrast agent map of the bronchial tree and, given the set of samples of contrast agent intake, computing a value to yield a bronchial wall uptake for each branch to yield inflammation measures; and using the density and inflammation measures to determine treatment or predict outcome for a patient.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: October 20, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Carol L. Novak, Benjamin L. Odry, Atilla Peter Kiraly
  • Patent number: 10799199
    Abstract: An X-ray dental imaging system for medical imaging includes a column, an upper shelf coupled to the column, a rotating part rotatably coupled to the upper shelf, and a chair spaced from the column.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: October 13, 2020
    Assignee: PALODEX GROUP OY
    Inventor: Sami Vartiainen
  • Patent number: 10758203
    Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, an X-ray detector, a gantry, control circuitry, and acquisition circuitry. The X-ray tube generates X-rays. The X-ray detector detects the X-rays generated by the X-ray tube. The gantry supports the X-ray tube and the X-ray detector rotatably around a rotation axis. While the X-ray tube and the X-ray detector are rotated, the control circuitry allows the X-ray tube to generate X-rays and alters a predetermined CT imaging parameter for which correction data is acquired during a single rotation. While the X-ray tube and the X-ray detector are rotated, the acquisition circuitry acquires correction data related to the target CT imaging parameter through the X-ray detector.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: September 1, 2020
    Assignee: Canon Medical Systems Corporation
    Inventor: Masaharu Tsuyuki
  • Patent number: 10757330
    Abstract: The invention relates to recording images with variable resolution for a driver assistance system (101) of a vehicle (100). The driver assistance system (101) comprises a camera (102). In the standard operation mode, the camera (103) is configured to iteratively switch between recording images of a first type and images of a second type with a higher resolution than the images of the first type. In this way, the images of the first type can be used for analyzing a near-range of the vehicle environment without requiring too much computing power. Moreover, the images of the second type have a sufficient resolution for analyzing a far-range of the vehicle environment.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: August 25, 2020
    Assignee: Conti Temic microelectronic GmbH
    Inventor: Mina Ashrafi
  • Patent number: 10751009
    Abstract: The radiation detector includes a plurality of image pixels each including a plurality of counting pixels. Each of the plurality of counting pixels includes a radiation absorption layer that converts incident photons, which are incident on a corresponding counting pixel of the plurality of counting pixels, into an electrical signal, and a photon processor configured to compare the electrical signal with a reference value, output an output signal according to a result of the comparison, count a number of photons which are incident on the corresponding counting pixel based on the output signal, and store the counted number of photons.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: August 25, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Min-kook Cho
  • Patent number: 10740900
    Abstract: A method for operating an imaging X-ray device, and the imaging X-ray device, are disclosed for acquisition of projection images. In an embodiment, X-rays are emitted from at least one X-ray source and, after passing through a tunnel-shaped examination region, acquired by at least one X-ray detector. At least the X-ray source is moved on a circular path or a circular arc section about a center of rotation in a plane of rotation. Herein, a patient couch is moved in a feed direction extending perpendicularly to the plane of rotation. According to at least one embodiment of the invention, a pitch factor is specified characterizing a feed of the patient couch in each unit of time as a function of an at least approximately ascertained position and/or extension of a region to be mapped in the plane of rotation with respect to the center of rotation.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: August 11, 2020
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventor: Andre Ritter
  • Patent number: 10733728
    Abstract: A computer readable storage medium for determining a normalized mean axis of rotation (MAR) of a cervical spine in a patient is provided, having stored thereon instructions executable by a processor to perform steps of providing a flexion trace and an extension trace of each of cervical spine vertebrae C2 to C7 by detecting a start position, drawing a line concurrently as the pointing device follows the margin from the start position to a finish position and detecting the finish position; superimposing the flexion trace on the extension trace; providing for a user to correct an error in a trace; determining a MAR datum; and normalizing the MAR datum.
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: August 4, 2020
    Assignee: KKT International Ltd.
    Inventors: Mayar Abbasi, Aslam Khan
  • Patent number: 10729392
    Abstract: An X-ray detector according to one embodiment includes X-ray detector modules, and a frame. Each X-ray detector module has a detection surface on which detection elements configured to detect X-rays are arrayed, and a supporter configured to support the detection elements. The frame fixes positions of the X-ray detector modules in such a manner that the detection surfaces of the X-ray detector modules are aligned along a first direction. The frame is provided with a pin protruding toward the supporter, at a position to which the supporter is fixed. The supporter is provided with a hole through which and into which the pin is inserted and fitted, at a position facing the frame. A movement of the supporter in the first direction is restricted by fitting the pin provided to the frame into the hole provided to the supporter, when the supporter is attached to the frame.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: August 4, 2020
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Kuniaki Yamamoto, Ryuichi Teramoto, Akira Nishijima, Takashi Kanemaru, Minoru Horinouchi
  • Patent number: 10724971
    Abstract: A plurality of CT imaging conditions are created beforehand as presets, each preset is created beforehand as an icon, and each preset is associated with an icon and registered. Each icon is disposed in a CT imaging condition setting screen according to a spatial resolution and density resolution that serve as two-dimensional indexes relating to image quality. The selection of a given icon by a user results in the selection of the CT imaging conditions corresponding to the selected icon. The indexes relate to image quality and are two-dimensional, and this facilitates operation and makes it possible to intuitively select optimal CT imaging conditions with a small number of steps.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: July 28, 2020
    Assignee: Shimadzu Corporation
    Inventors: Daisuke Harada, Shuhei Onishi, Ryo Takahashi, Yasuyuki Keyaki
  • Patent number: 10716956
    Abstract: The present disclosure discloses a radiotherapeutic device. The radiotherapeutic device includes a gantry, a detector and a slide driving unit. The slide driving unit includes a sliding guide rail, a driving apparatus and a movable block. The detector is fixed on the movable block. The movable block drives the detector to slide along the sliding guide rail driven by the driving apparatus.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: July 21, 2020
    Assignee: OUR UNITED CORPORATION
    Inventors: Fangzheng Chen, Haifeng Liu
  • Patent number: 10709405
    Abstract: Disclosed is an X-ray CT radiographing apparatus capable of selecting various FOVs, simplifying radiographing motion, and reducing X-ray exposure dose, and a method thereof. An X-ray CT radiographing apparatus according to the present invention includes a rotation supporter rotating by a rotation driver, a generating unit including an X-ray generator emitting X-rays and a collimator so as to radiate a collimated X-ray beam, a sensing unit including a small width X-ray sensor moving in a tangential direction of a rotation trajectory, and a controller controlling operations of the rotation driver, the generating unit, and the sensing unit when performing X-ray radiographing, and configuring movement trajectories of an X-ray beam for radiographing FOVs different from each other to be the same, and controlling the generating unit to turn OFF the X-ray beam in sections different from each other of the movement trajectory of the X-ray beam according to the FOV.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: July 14, 2020
    Assignees: VATECH Co., Ltd., VATECH EWOO Holdings Co., Ltd.
    Inventor: Byung-Jun Ahn
  • Patent number: 10715166
    Abstract: Diverse applications in particle physics experiments and emerging technologies such as Lidar are driving performance increase and cost reduction in giga-hertz sampling-rate high-resolution data conversion. In applications such as these, critical aspects of the data may occur only during relatively short nanosecond portions of observation periods lasting microseconds. Data acquisition architectures that key in on regions of the data containing activity, digitize the data, and provide info to accurately measure the position of the data in time relative to a time reference are described. These architectures may facilitate system implementation and reduce overall system cost.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: July 14, 2020
    Assignee: NALU Scientific, LLC
    Inventors: Isar Mostafanezhad, Luca Macchiarulo, Dean Uehara, Christopher Chock, Benjamin Rotter
  • Patent number: 10685759
    Abstract: A method of analyzing a specimen using X-rays, comprising the steps of: Irradiating the specimen with input X-rays; Using a detector to detect a flux of output X-rays emanating from the specimen in response to said irradiation, which method further comprises the following steps: Using the detector to intercept at least a portion of said flux so as to produce a set {Ij} of pixeled images Ij of at least part of the specimen, whereby the cardinality of the set {Ij} is M>1. For each pixel pi in each image Ij, determining the accumulated signal strength Sij, thus producing an associated set of signal strengths {Sij}. Using the set {Sij} to calculate the following values: A mean signal strength S per pixel position i; A variance ?2S in S per pixel position i. Using these values S and ?2S to produce a map of mean X-ray photon energy E per pixel.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: June 16, 2020
    Assignee: FEI Company
    Inventors: Wilfred Kelsham Fullagar, Andrew Maurice Kingston, Glenn Robert Myers, Mahsa Paziresh, Trond Karsten Varslot
  • Patent number: 10679758
    Abstract: Methods and systems for facilitating clinical decisions during a catheterization procedure based at least in part on image data captured during the catheterization procedure, are disclosed. More particularly, embodiments include analyzing the image data and transmitting decision support data representative of past catheterization procedures having a similarity to the current catheterization procedure. Other embodiments are also described and claimed.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: June 9, 2020
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Julia C. Fox, Peter Staehr
  • Patent number: 10674915
    Abstract: Systems and methods for real-time target validation during radiation treatment therapy based on real-time target displacement and radiation dosimetry measurements.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: June 9, 2020
    Assignee: VARIAN MEDICAL SYSTEMS, INC.
    Inventors: John Rodenbeck Adler, Jr., Jianing Shi, James E. Clayton
  • Patent number: 10672135
    Abstract: The invention relates to a device for processing CT imaging data, comprising a processing unit, which is configured to receive a plurality of sets of CT imaging data recorded at different imaging positions and at different points in time. Furthermore, the processing device is configured to provide a plurality of auxiliary sets of CT imaging data, each auxiliary set of CT imaging data comprising processed image data allocated to spatial positions inside a respective spatial section of the object space, wherein a given one of the spatial sections contains those spatial positions which are covered by those sets of CT imaging data acquired at a respective one of the imaging positions, and to generate the processed image data for a given spatial position using those of the sets of CT imaging data acquired at the respective one of the imaging positions.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: June 2, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Heike Carolus, Sven Kabus, Tobias Klinder, Holger Schmitt
  • Patent number: 10664723
    Abstract: Systems and methods are provided for generating a pseudo-CT prediction model using multi-channel MR images. An exemplary system may include a processor configured to retrieve training data including multiple MR images and at least one CT image for each of a plurality of training subjects. For each training subject, the processor may determine at least one tissue parameter map based on the multiple MR images and obtain CT values based on the at least one CT image. The processor may also generate the pseudo-CT prediction model based on the tissue parameter maps and the CT values of the plurality of training subjects.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: May 26, 2020
    Assignee: Elekta, Inc.
    Inventor: Xiao Han
  • Patent number: 10655958
    Abstract: The present disclosure relates to systems and methods for determining rotation angles. The systems may perform the methods to: obtain a rotation speed of a radioactive scanning source in a CT scanner; obtain a plurality of original projection acquisition times corresponding to a plurality of projection samples, the plurality of projection samples being associated with rotation of the radioactive scanning source; determine a plurality of original rotation angles corresponding to the plurality of projection samples based on the plurality of original projection acquisition times and the rotation speed of the radioactive scanning source; and determine a plurality of modified rotation angles corresponding to the plurality of projection samples by modifying the plurality of original rotation angles.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: May 19, 2020
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Jingbo Wang, Weiqiang Guo, Xiangyu Hua
  • Patent number: 10638987
    Abstract: An X-ray detector includes a detection unit to convert X-rays into a signal value and an evaluation unit. The detection unit and the evaluation unit are configured in a common component, the extent of the component along a first direction being not greater than the extent of the detection unit. The evaluation unit includes at least one correction unit to correct the signal values, a computation unit to control the correction, and a memory unit to store at least one correction parameter. The evaluation unit is designed such that the signal values are corrected as a function of the at least one correction parameter. A method and detector group are also disclosed.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: May 5, 2020
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventors: Mario Eichenseer, Helmut Winkelmann
  • Patent number: 10617381
    Abstract: A method for measuring an X-ray image of an area undergoing medical examination that has at least one object. A 3D model is provided of the area undergoing examination that includes a virtual 3D object to be assigned to the object to be measured, a digitally reconstructed X-ray picture is computed based on the 3D model and under the assumption of a virtual projection direction, the X-ray image is compared with the digitally reconstructed X-ray picture, the virtual projection direction is changed relative to the virtual 3D object. The steps of comparing and changing are repeated until a virtual projection direction with maximum correlation between the X-ray image and the digitally reconstructed X-ray picture is found. An object plane is determined that is to be assigned to the virtual 3D object. A corrected projection direction is defined and the X-ray image is measured.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: April 14, 2020
    Assignee: Raylitic GmbH
    Inventors: Frank Thilo Trautwein, Marcel Dreischarf
  • Patent number: 10610169
    Abstract: A method is described for determination of an initialization time point of imaging of a region of interest of an object to be examined. A slice of the object is selected for bolus-tracking images in which the flow of a fluid flowing toward the region of interest is observable. A plurality of bolus-tracking images of the slice is taken. Time-density curves are determined based upon intensity values assigned to the individual image points acquired in the plurality of bolus-tracking images for the selected slice. Individual image points are divided into groups according to similarity of time-density curves assigned to the individual image points. Finally, the time at which an intensity value assigned to one of the groups exceeds a threshold value is determined. Also described are a method for carrying out the imaging of a region of interest; an initialization time point determination device; and a computed tomography system.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: April 7, 2020
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Johannes Georg Korporaal
  • Patent number: 10602993
    Abstract: A computed tomography (CT) system includes a rotatable gantry having an opening to receive an object to be scanned, an x-ray tube having an anode, the x-ray tube positioned on the rotatable gantry to generate x-rays from a first focal spot at a first z-location, and from a second focal spot at a second z-location, a pixelated detector positioned on the rotatable gantry to receive the x-rays from the first z-location and from the second z-location, and a computer. The computer is programmed to acquire a first dataset in a fan geometry at a first z-location, acquire a second dataset in the fan geometry at a second z-location, and reconstruct an image based on the first dataset and the second dataset, wherein the reconstruction is performed without combining the first dataset and the second dataset into one dataset with a single geometry from which the image reconstruction is performed.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: March 31, 2020
    Assignee: FMI Medical Systems Co., Ltd.
    Inventor: Hongbin Guo
  • Patent number: 10608701
    Abstract: A rotary joint has a body with an even number of body segments. Each body segment holds one transmission line with one RF signal connector at one end and a termination at the opposing end. The body segments are oriented such, that alternatingly in neighboring segments two RF signal connectors or two terminations are next to each other. Two neighboring body segments are connected by a carrier plate. The carrier plate holds an electronic housing where two RF signal connectors are located next to each other, and provides a connection to the RF signal connectors.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: March 31, 2020
    Assignee: Schleifring GmbH
    Inventors: Horst Knobl, Herbert Staffler
  • Patent number: 10595794
    Abstract: An animal, specimen, or imaging phantom is imaged in precise increments over at least 360 degrees. The animal, specimen, or imaging phantom is supported within a subject holder. The subject holder has an elongated portion or tube for holding securely the animal, specimen or imaging phantom. The subject holder is connected to an actuator motor driver. The actuator motor driver causes the subject holder to rotate at the precise increments, and an image of the animal, specimen, or imaging phantom is captured at each increment. The subject holder limits movement of the subject being imaged at each increment.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: March 24, 2020
    Assignees: AUBURN UNIVERSITY, MASSACHUSETTS GENERAL HOSPITAL
    Inventors: Peter Panizzi, Andrew D. Brannen, Robert D. Arnold, Matthias Nahrendorf
  • Patent number: 10598802
    Abstract: Among other things, a detector unit for a radiation detector array is provided. The detector unit includes a radiation detection sub-assembly including a scintillator and a photodetector array. A first routing layer is coupled to the photodetector array of the radiation detection sub-assembly at a first surface of the routing layer. An electronics assembly includes an analog-to-digital converter that converts an analog signal to a digital signal. A second routing layer is disposed between the A/D converter and the first routing layer. A shielding element is disposed between the A/D converter and the second routing layer. The shielding element shields the A/D converter from the radiation photons. The second routing layer couples the electronics sub-assembly to the first routing layer. A first coupling element couples the A/D converter to the second routing layer.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: March 24, 2020
    Assignee: Analogic Corporation
    Inventors: Randy Luhta, Chris Vrettos
  • Patent number: 10586324
    Abstract: The present disclosure discloses an inspection device and a method for inspecting a container. Transmission scanning is performed on the inspected container using a scanning device including a sparse area array detector to obtain scan data. Digital focusing is performed at a specific depth position in a depth direction. Defocused pixel values are filtered out to obtain a slice image at the specific depth position. It is judged whether dangerous articles or suspicious articles are included in the slice image.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: March 10, 2020
    Assignee: Nuctech Company Limited
    Inventors: Ziran Zhao, Jianping Gu, Qian Yi, Bicheng Liu
  • Patent number: 10568588
    Abstract: Radiation source and detector arrangement for a differential phase contrast CT scanner, in which the detector tiles are placed asymmetrically such that direct rays, which hit gaps between tiles are sampled by tile centers for the complementary rays. This may provide for good image quality without any approximate processing.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: February 25, 2020
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Thomas Koehler, Franz Pfeiffer, Peter Benjamin Theodor Noel, Dieter Richard Hahn
  • Patent number: 10561391
    Abstract: Methods and systems are provided for automatic exposure control in a computed tomography imaging system. In one embodiment, a method comprises estimating attenuation properties of a subject along a direction, and varying, based on the attenuation properties, a helical pitch along the direction during a scan of the subject. In this way, a desired image quality can be maintained while reducing radiation dose, without modulating tube current.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: February 18, 2020
    Assignee: General Electric Company
    Inventor: Brian Edward Nett
  • Patent number: 10552992
    Abstract: A method for reducing metal artifacts in a volume radiographic image acquires a first set of projection images of an object on a radiographic detector at different acquisition angles. An initial estimate of the volume that includes the object using the acquired projection images is generated. The estimated volume is updated by one or more iterations of generating a second set of scatter-corrected projection images using the acquired first set of projection images and the estimated volume; generating a third set of estimated projection images using forward ray-tracing through the estimated volume; and reconstructing the estimated volume according to a signal quality factor obtained from analysis of the detector signal and used in a comparison of the second set of scatter-corrected projection images with the third set of estimated projection images. One or more images rendered from the updated estimated volume are displayed.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: February 4, 2020
    Assignee: Carestream Health, Inc.
    Inventors: Yuan Lin, William J. Sehnert
  • Patent number: 10542947
    Abstract: The present invention is directed to make a photon-counting CT apparatus capable of more accurate data acquisition. Such apparatus is provided with a reference detection unit and a time measuring instrument to measure temporal fluctuations in a rotational direction of an X-ray irradiation unit. The apparatus corrects temporal fluctuations in the rotational direction involved in data measured by the reference detection unit, using time measurement data which is output by the time measuring instrument. Using corrected measurement data measured by the reference detection unit, the apparatus makes corrections of fluctuations pertaining to the X-ray tube of the X-ray irradiation unit and pile-up. Data corrections with high accuracy are thus enabled.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: January 28, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Shinichi Kojima, Yasutaka Konno, Fumito Watanabe, Isao Takahashi
  • Patent number: 10539516
    Abstract: Frame data of tomographic planes that are parallel in the scan direction and between an X-ray tube and an X-ray detecting unit is generated based on detected frame data. The generation of frame data is based on the fan-shaped spreading of an X-ray beam and the differences in position in a height direction between the tomographic planes from a detection surface. Tomographic images are respectively generated from the frame data of the tomographic planes based on laminography technique. Edge information based on the changes in pixel values in each tomographic image is calculated for each pixel. A three-dimensional distribution of the edge information is generated and the edge information is searched in a direction passing through the tomographic planes and pixels indicating a maximum value in the edge information are detected. Only pixels in the tomographic images that positionally correspond to detected pixels are combined into a single composite image.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: January 21, 2020
    Assignee: JOB CORPORATION
    Inventors: Tsutomu Yamakawa, Shuichiro Yamamoto, Masashi Yamasaki
  • Patent number: 10531844
    Abstract: Described are apparatus and methods of operation for three dimensional fluence modulation and scatter shielding for dedicated computed tomography (CT). Through the disclosed invention, the number of incident photons on the field of view (FOV) of the imaging system becomes proportional to the path length of the photon through the anatomy of interest. The apparatus is comprises a patient specific x-ray fluence modulation unit and a scatter shield unit. The fluence modulation unit reduces radiation dose differences across the anatomical part and the dynamic range requirements for the x-ray detector. The scatter shield unit is intended for preventing the scattered beams from reaching the x-ray detector. The internal structures of each unit are composed of elements with adjustable positions dependent on the specific shape of the object in the field-of-view (FOV). Method of operation are also provided.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: January 14, 2020
    Assignee: MALCOVA LLC
    Inventors: Peymon Mirsaeid Ghazi, Tara Renee Ghazi
  • Patent number: 10529095
    Abstract: Methods and devices for reconstructing dual-energy CT images are provided. In one aspect, CT scan is performed with a high energy and a low energy periodically and alternatively changed on a scanning target, reconstruction data for a high-energy image of a current reconstruction position is obtained based on whether a circle of high-energy scan closest to the current reconstruction position of the scanning target is a full circle of scan, the high-energy image of the current reconstruction position is reconstructed according to the reconstruction data of the high-energy image; reconstruction data for a low-energy image of the current reconstruction position is obtained based on whether a circle of high-energy scan closest to the current reconstruction position of the scanning target is the full circle of scan, the low-energy image of the current reconstruction position is reconstructed according to the reconstruction data of the low-energy image.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: January 7, 2020
    Inventors: Shuangxue Li, Shanshan Lou, Lixia Tong
  • Patent number: 10530863
    Abstract: Methods and systems for storing and accessing dental images. The system includes an imaging system for acquiring x-ray projection frames. The imaging system is connected to a local server through a local area network. A cloud server communicates with devices on the local area. The x-ray projection frames are transmitted from the imaging system to the local server. The local server stores the series of related x-ray projection frames according to a specified policy. In one embodiment, the x-ray projection frames are compressed into a compressed image data set using a modified video compression prediction algorithm customized for x-ray images. The compressed image data is transmitted to the cloud server for storage. The x-ray image data can be accessed from the cloud server by external devices and by other local area networks.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: January 7, 2020
    Assignee: DENTAL IMAGING TECHNOLOGIES CORPORATION
    Inventors: Robert E. Keating, Bradley S. Carlson, Darryl Day Spencer
  • Patent number: 10520569
    Abstract: In a method and magnetic resonance (MR) apparatus for the optimized capture of MR measurement data of an object using at least two reception coils with slice multiplexing, achievable quality values for different parameter sets are tested in order to determine an optimum parameter set for the slice multiplexing. Slice multiplexing measurements thus can be performed with an optimum parameter set, so the capture time can be shortened and at the same time a higher quality is achieved in the measurement data that are generated and the images that are reconstructed.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: December 31, 2019
    Assignee: Siemens Healthcare GmbH
    Inventor: Mario Zeller
  • Patent number: 10509135
    Abstract: Detector module designs for radiographic imaging include first and second layers of scintillator rods or pixel arrays oriented in first and second directions. The first and second directions are transversely oriented to define a light sharing region between the first and second layers. Encoding features may be disposed in, on or between the first and second layers, and configured to modulate propagation of optical signals therealong or therebetween.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: December 17, 2019
    Assignee: Minnesota Imaging and Engineering LLC
    Inventors: Robert Sigurd Nelson, William Bert Nelson
  • Patent number: 10507005
    Abstract: There is set forth herein a method including performing with an X-ray detector array of a CT imaging system one or more calibration scans, wherein the one or more calibration scans include obtaining for each element of the first through Nth elements of the X-ray detector array one or more calibration measurements; and updating a spectral response model for each element of the first through Nth elements using the one or more calibration measurements. In another aspect, a CT imaging system can perform imaging, e.g. including material decomposition (MD) imaging, using updated spectral response models for elements of an X-ray detector array. The spectral response models can be updated using a calibration process so that different elements of an X-ray detector array have different spectral response models.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: December 17, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Yannan Jin, Geng Fu, Peter M. Edic, Hewei Gao