Computerized Tomography Patents (Class 378/4)
  • Patent number: 11328460
    Abstract: An X-ray CT system includes an X-ray tube, an X-ray detector and processing circuitry. The processing circuitry is configured to cyclically change energy of the X-rays during one rotation of the X-ray tube around a subject. The processing circuitry is configured to perform a process including a correcting process addressing a difference in a transmission amount between X-rays having first energy and X-rays having second energy, on at least one selected from between: a plurality of first projection data sets acquired when the X-rays having the first energy were radiated; and a plurality of second projection data sets acquired when the X-rays having the second energy were radiated. The processing circuitry is configured to reconstruct an image on the basis of a combined data set generated on the basis of a plurality of projection data sets including the projection data sets resulting from the process.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: May 10, 2022
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Hiroki Taguchi, Akshay Narayan Prabhu Verleker, Yuki Houno, Satoshi Saito
  • Patent number: 11311346
    Abstract: Disclosed is a system and method for assembling instrument sets that include correct instruments with one or more verified states for different procedures. The system may receive a request for a particular instrument, and may determine instrument states defined for the particular instrument or a procedure involving the particular instrument. The system may scan a first instrument using one or more sensors, may verify that the first instrument matches a make, model, or type of the particular instrument based on the scanning data, and may classify the first instrument states with at least a threshold probability based on the scanning data matching characteristics from a probabilistic model. The system may control the distribution of the first instrument to a first destination or a second destination based on whether or not the first instrument states satisfy the instrument states defined for the particular instrument or the procedure.
    Type: Grant
    Filed: November 24, 2021
    Date of Patent: April 26, 2022
    Assignee: BH2 INNOVATIONS INC.
    Inventors: Stephen J. Budill, Michael S. Humason, Salmaan Hameed
  • Patent number: 11298089
    Abstract: An x-ray examination arrangement includes an x-ray radiation source arranged at a source position, at least two x-ray detectors having active detector areas and being arranged such that the active detector areas capture different solid angle ranges with respect to x-ray radiation produced by the x-ray radiation source and emanating from the source position, and a control device configured to calculate a projection onto a virtual detector plane based on radiographs respectively captured by the at least two x-ray detectors and spatial poses of the at least two x-ray detectors relative to the source position, and provide a combined radiograph for the virtual detector plane based on the projection. In addition, a method for operating the x-ray examination arrangement and a computed tomography device are provided.
    Type: Grant
    Filed: February 22, 2020
    Date of Patent: April 12, 2022
    Assignee: Carl Zeiss Industrielle Messtechnik GmbH
    Inventors: Marco Erler, Daniel Weiss, Martin Krenkel, Wolfgang Kimmig
  • Patent number: 11302042
    Abstract: A method for correcting nonlinearities of image data of at least one radiograph and a computed tomography device are provided. The method includes obtaining image data of the at least one radiograph by irradiating an object with polychromatic invasive radiation and by detecting attenuated radiation that has passed through the object, utilizing a plurality of correction functions for correction purposes, said correction functions each being determined by the parameter value of at least one correction parameter, and applying an ascertainment method to ascertain the parameter value or the parameter values of the correction function used for correction purposes, said ascertainment method being determined by the parameter value of an ascertainment parameter or the parameter value sets of a plurality of ascertainment parameters.
    Type: Grant
    Filed: June 29, 2019
    Date of Patent: April 12, 2022
    Assignee: Carl Zeiss Industrielle Messtechnik GmbH
    Inventor: Martin Krenkel
  • Patent number: 11300504
    Abstract: A tomography method, system, and apparatus based on time-domain spectroscopy are provided. A light emitter is controlled to emit a pulse beam to scan a cross-section of an object to be measured while using a light receiver to detect the pulse beam passing through the object to be measured, so as to obtain time-domain pulse signals at locations of a scan path. A scan angle is repeatedly changed to perform the scanning and detecting steps, so as to collect the time-domain pulse signals of multiple angles of the cross-section as a time information set. Features are retrieved from the time-domain pulse signals using kernels of a trained machine learning model, which is trained with time information sets and corresponding ground truth images of cross-sections to learn the kernels for retrieving the features. The retrieved features are converted into a spatial domain to reconstruct a cross-sectional image of the object.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: April 12, 2022
    Assignee: National Tsing Hua University
    Inventors: Shang-Hua Yang, Yi-Chun Hung
  • Patent number: 11298966
    Abstract: The invention relates to a thin optical security element comprising a reflective or refractive light-redirecting surface having a relief pattern operable to redirect incident light from a light source and form a projected image on a projection surface, the projected image comprising a caustic pattern reproducing a reference pattern that is easily visually recognizable by a person. The invention also relates to a method for designing a relief pattern of a light-redirecting surface of a thin optical security element.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: April 12, 2022
    Assignee: SICPA HOLDING SA
    Inventors: Andrea Callegari, Pierre Degott, Todor Dinoev, Christophe Garnier, Alain Mayer, Yuliy Schwartzburg, Romain Testuz, Mark Pauly
  • Patent number: 11295510
    Abstract: Embodiments of the invention relate to a method and apparatus for displaying information. In a specific embodiment, at least two pluralities of voxel values for a corresponding at least two functions with respect to at least a portion of a subject can be obtained. The at least a portion of the subject can have a plurality of local volume elements, where the at least two pluralities of voxel values for the corresponding at least two functions each correspond to the plurality of local volume elements. In this way, there is a voxel value for each function for each local volume element of the portion of the subject. Each of the at least two pluralities of voxel values represents the value of the corresponding function of the at least two functions for the corresponding plurality of local volume elements. A representation is created where the value of one of the at least two functions is on a first axis and a count of voxels is on a second axis.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: April 5, 2022
    Assignee: H. LEE MOFFITT CANCER CENTER AND RESEARCH INSTITUTE, INC.
    Inventors: Kenneth M. Forster, Geoffrey G. Zhang
  • Patent number: 11284845
    Abstract: A control device includes a detection unit, a determination unit, a generation unit, and a control unit. The detection unit detects a state of each of the plurality of radiation tubes in a case in which tomosynthesis imaging that continuously irradiates an object with radiation at a plurality of different irradiation angles in order to generate a tomographic image in any tomographic plane of the object is performed using the plurality of radiation tubes. The determination unit determines whether or not to permit the generation of the tomographic image on the basis of the detection result of the detection unit and outputs a determination result. The generation unit generates the tomographic image. The control unit controls the operation of the generation unit on the basis of the determination result.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: March 29, 2022
    Assignee: FUJIFILM Corporation
    Inventor: Masayoshi Matsuura
  • Patent number: 11288813
    Abstract: Systems and methods are disclosed for anatomic structure segmentation in image analysis, using a computer system. One method includes: receiving an annotation and a plurality of keypoints for an anatomic structure in one or more images; computing distances from the plurality of keypoints to a boundary of the anatomic structure; training a model, using data in the one or more images and the computed distances, for predicting a boundary in the anatomic structure in an image of a patient's anatomy; receiving the image of the patient's anatomy including the anatomic structure; estimating a segmentation boundary in the anatomic structure in the image of the patient's anatomy; and predicting, using the trained model, a boundary location in the anatomic structure in the image of the patient's anatomy by generating a regression of distances from keypoints in the anatomic structure in the image of the patient's anatomy to the estimated boundary.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: March 29, 2022
    Assignee: HeartFlow, Inc.
    Inventors: Leo Grady, Peter Kersten Petersen, Michiel Schaap, David Lesage
  • Patent number: 11270478
    Abstract: A method for reconstructing an image may include obtaining scan data relating to a subject. The method may also include determining a first field of view (FOV) and determining a second FOV. The method may further include reconstructing a first image based on a first portion of the scan data corresponding to the first field of view, and reconstructing a second image based on a second portion of the scan data corresponding to the second field of view. The method may also include generating a third image based on the first image and the second image.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: March 8, 2022
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Xin Wang, Guotao Quan
  • Patent number: 11266358
    Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray detection element, an A/D convertor, a readout switch, and readout control circuitry. The X-ray detection element outputs an electric signal corresponding to a detected X-ray. The A/D convertor A/D-converts the electric signal. The readout switch switches a connection between the X-ray detection element and the A/D convertor. The readout control circuitry acquires, as offset data, data which is output by the A/D convertor in a state where the readout switch is OFF instead of projection data which is output by the A/D convertor according to the electric signal in a state where the readout switch is ON, in a view during a scan.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: March 8, 2022
    Assignee: Canon Medical Systems Corporation
    Inventor: Akira Nishijima
  • Patent number: 11270477
    Abstract: Methods and systems are provided for reconstructing images with a tailored image texture. In one embodiment, a method comprises acquiring projection data, and reconstructing an image from the projection data with a desired image texture. In this way, iterative image reconstruction techniques may be used to substantially reduce image noise, thereby enabling a reduction in injected contrast and/or radiation dose, while preserving an image texture familiar from analytic image reconstruction techniques.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: March 8, 2022
    Assignee: General Electric Company
    Inventors: Brian Edward Nett, Jiahua Fan, Amber Christine Silvaggio
  • Patent number: 11259761
    Abstract: The invention relates to positioning a volume to be imaged for computed tomography imaging. According to the invention, at least two optical cameras (22) are used for taking a photo or for live imaging an anatomy from different directions. A volume positioning indicator (42) is shown in connection with these images, the volume positioning indicator (42) indicating the location of the volume within the area imaged by the cameras (22) to get imaged by the computed tomography imaging apparatus (10).
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: March 1, 2022
    Inventors: Kustaa Nyholm, Lauri Seppala, Tero Pihlajamaki
  • Patent number: 11261376
    Abstract: The present invention provides a gadolinium oxysulfide sintered body having a high light output. The problem is resolved by a gadolinium oxysulfide sintered body in which the ratio of the light transmittance T410 of 410 nm to the light transmittance T512 of 512 nm (T410/T512) is from 0.31 to 0.61, or a gadolinium oxysulfide sintered body in which the ratio of the diffraction peak intensity Iy of a phase different from gadolinium oxysulfide appearing at 2?=from 20 to 29° to the diffraction peak intensity (Ix) of (102) or (011) of gadolinium oxysulfide appearing at 2?=30°±1° (Iy/Ix) is 0.1 or less in an XRD diffraction pattern and which contains one or more activators selected from the group consisting of praseodymium, terbium, and cerium.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: March 1, 2022
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Koji Hazu, Keiji Yamahara, Toshiaki Katayama
  • Patent number: 11253208
    Abstract: A control device includes a control unit and a determination unit. The control unit controls an operation of radiation tubes such that radiation is emitted at irradiation positions whose number is smaller than the total number of irradiatable positions preset so as to correspond to irradiation angles. The determination unit determines whether or not the radiation needs to be additionally emitted at the irradiatable positions different from the irradiation positions in order to obtain the tomographic image with an image quality level required for diagnosis, on the basis of a determination image obtained by the emission of the radiation at the irradiation positions.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: February 22, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Kazuhiro Makino, Takeyasu Kobayashi, Shunsuke Kodaira
  • Patent number: 11257585
    Abstract: Systems and methods are disclosed for identifying image acquisition parameters. One method includes receiving a patient data set including one or more reconstructions, one or more preliminary scans or patient information, and one or more acquisition parameters; computing one or more patient characteristics based on one or both of one or more preliminary scans and the patient information; computing one or more image characteristics associated with the one or more reconstructions; grouping the patient data set with one or more other patient data sets using the one or more patient characteristics; and identifying one or more image acquisition parameters suitable for the patient data set using the one or more image characteristics, the grouping of the patient data set with one or more other patient data sets, or a combination thereof.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: February 22, 2022
    Assignee: HeartFlow, Inc.
    Inventors: Vivek Naresh Bhatia, Leo Grady, Souma Sengupta, Timothy A. Fonte
  • Patent number: 11246552
    Abstract: The invention relates to a system and a method for assisting in attenuation correction of gated PET data of a moving object (2). In the system, an evaluation unit (15) is configured to (i) receive a CT image of the object (2) and to segment the CT image into a plurality of CT sub-images, each CT sub-image correspond to an axial segment of an imaged volume, (ii) to determine for each CT sub-image a gate including PET data having a greatest correspondence with the CT sub-image, (iii) to construct, for each CT sub-image, a PET sub-image from the PET data included in the gate determined for the CT sub-image, the PET sub-image substantially corresponding to the same axial segment of the imaged volume as the CT sub-image, and (iv) to combine the PET sub-images to form a PET reference image of the object (2).
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: February 15, 2022
    Assignee: KONINKLIJKE PHILIPS N.V
    Inventors: Sven Kabus, Andre Frank Salomon
  • Patent number: 11246543
    Abstract: A positron emission tomography (PET) system is provided. The system includes a first detector panel including a first array of detectors, a second detector panel including a second array of detectors, said second detector panel being moveable relative to a point between the first detector panel and the second detector panel, a tracking system configured to detect a position of said second detector panel relative to the first detector panel while imaging a subject, a computing device in communication with the first detector panel, the second detector panel, and the tracking system, the computing device configured to receive coincidence data from the first and second detector panels, receive position data from the tracking system, wherein each coincidence datum of the received coincidence data is associated with a unique position datum of the received position data, and reconstruct a plurality of images based on the received coincidence data and the received position data.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: February 15, 2022
    Assignee: Washington University
    Inventors: Yuan-Chuan Tai, Jie Wen, Ke Li, Aswin John Mathews
  • Patent number: 11234670
    Abstract: When generating a tomographic image using a measuring X-ray CT apparatus that is configured to emit X-rays while rotating a specimen that is arranged on a rotary table and reconstruct a projection image thereof to generate a tomographic image of the specimen, an amount of geometric error that is included in the projection image is obtained in advance and stored; the projection image is corrected using the stored amount of geometric error; and a tomographic image is reconstructed using the corrected projection image.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: February 1, 2022
    Assignee: MITUTOYO CORPORATION
    Inventors: Sadayuki Matsumiya, Hidemitsu Asano, Masato Kon
  • Patent number: 11219421
    Abstract: An X-ray CT imaging apparatus includes: a supporter that is supported such that an X-ray generator and an X-ray detector are opposed to each other; a turning motor that turns the supporter about a shaft; a crosswise drive motor that moves the shaft in a crosswise direction; and a circuit that performs processing of controlling the turning motor and the crosswise drive motor and processing of setting the physique of a subject. When X-ray CT imaging is performed, the crosswise drive motor moves the shaft in synchronization with turning of the supporter about the shaft, and the supporter is caused to perform combined motion, which allows the X-ray generator and the X-ray detector to turn about a center of an X-ray CT imaging region, and position control of the shaft is performed according to the size of the physique of the subject.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: January 11, 2022
    Assignee: J. MORITA MFG. CORP.
    Inventors: Yoshito Sugihara, Tomoyuki Sadakane, Masanori Otsuka, Takahiro Yoshimura, Yutaka Ito, Sho Matsushita
  • Patent number: 11204317
    Abstract: A tomographic imaging system receives measurements at a set of frequencies of a wavefield scattered by an internal structure of an object, recursively reconstructs an image of the internal structure of the object until a termination condition is met, and renders the reconstructed image. For a current iteration, the system adds a frequency to a previous set of frequencies used during a previous iteration to produce a current set of frequencies, such that the added frequency is higher than any frequency in the previous set of frequencies, and reconstructs a current image of the internal structure of the object that minimizes a difference between a portion of the scattered wavefield measured at the current set of frequencies and a wavefield synthetized from the current image. A previous image determined during the previous iteration initializes the reconstruction of the current image.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: December 21, 2021
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Hassan Mansour, Ajinkya Kadu, Petros Boufounos, Dehong Liu
  • Patent number: 11191512
    Abstract: A radiographic image processing device includes a radiographic image acquisition unit that acquires a radiographic image taken from a subject using radiation, a region discrimination unit that discriminates a plurality of regions using the radiographic image, a scattered radiation component-estimation section that estimates scattered radiation components of the radiation of each region using scattered radiation component-estimation processing varying for each region, a scattered radiation component-subtraction section that subtracts the scattered radiation components of each region, and an image processing unit that generates a scattered radiation component-subtracted image where the scattered radiation components have been subtracted by sequentially estimating and subtracting the scattered radiation components of each region using the scattered radiation component-estimation section and the scattered radiation component-subtraction section.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: December 7, 2021
    Assignee: FUJIFILM Corporation
    Inventor: Tomoyuki Takahashi
  • Patent number: 11189107
    Abstract: Example implementations described herein are directed to simulation of devices to be installed in a facility through a high resolution 3D model. A high resolution capture device is utilized to capture 3D images of a facility to generate a 3D model from which devices can be located in freespace within the 3D model and simulated to provide simulated perspective views of facility from the perspective of the device.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: November 30, 2021
    Assignee: HITACHI AMERICA, LTD.
    Inventor: Eldor Reif
  • Patent number: 11181491
    Abstract: Aspects of the disclosure are directed to an analysis of a material of a component. A radiation source is activated to transmit radiation to the component. A beam pattern is obtained based on the component interfering with the radiation. The beam pattern is compared to a reference beam pattern. An anomaly is detected to exist in the material when the comparison indicates a deviation between the beam pattern and the reference beam pattern.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: November 23, 2021
    Assignee: Raytheon Technologies Corporation
    Inventors: Iuliana Cernatescu, David U. Furrer, Venkatarama K. Seetharaman
  • Patent number: 11182895
    Abstract: An apparatus configured to generate an output quality error estimate using a machine-learning error estimation model to compare an output meeting a predetermined quality threshold with an output image reconstructed from a plurality of images, and provide the output quality error estimate for use in estimating if a second subsequent image is required, in addition to a first subsequent image to obtain a cumulative output having an output quality error meeting a predetermined error threshold. Also an apparatus configured, using a received output quality error estimate generated using a machine-learning error estimation model as above, to estimate if a second subsequent image is required, in addition to a first subsequent image, to obtain a cumulative output having an output quality error meeting a predetermined error threshold.
    Type: Grant
    Filed: November 23, 2017
    Date of Patent: November 23, 2021
    Assignee: Nokia Technologies Oy
    Inventors: Mikko Honkala, Akos Vetek, Tapio Taipalus, Harri Lindholm
  • Patent number: 11179059
    Abstract: An optical imaging apparatus for diagnosis generates a closed curve which precisely reproduces the shape of the indwelled stent and the shape of the inner wall of the biological tissue at the indwelling position of the stent. The optical imaging apparatus analyzes intensity change in transmission direction of the light from the transmission and reception unit for every one of the respective line data; based on the result of the analysis detects pixel data expressing the stent position in the transmission direction; labels each pixel data expressing the detected stent position; eliminates, within the respective labeling groups applied with the same labels, labeling groups in each of which the number of pixel data in the circumferential direction is a predetermined value or less; calculates center position for each labeling group not eliminated; and generates a stent closed-curve using the center position of each labeling group.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: November 23, 2021
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Junya Furuichi, Kenji Kaneko
  • Patent number: 11175241
    Abstract: This X-ray phase image capturing system (100) includes an X-ray source (1), a plurality of gratings, and a detector (4), a moving mechanism (8), and an image processing unit (5). The image processing unit (5) is configured to generate a phase-contrast image (15) based on a plurality of feature quantities (12) and feature quantities 14 extracted from a plurality of X-ray image sets (R) acquired by performing fringe scanning a plurality of times in a short time.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: November 16, 2021
    Assignee: Shimadzu Corporation
    Inventors: Satoshi Sano, Kenji Kimura, Taro Shirai, Masanobu Sato, Takahiro Doki, Akira Horiba, Naoki Morimoto
  • Patent number: 11160523
    Abstract: Methods and systems are provided for generating a diagnostic cardiac image using a CT system without ECG gating techniques. In one example, a method for an imaging system includes determining a scanning duration for scanning a heart of a patient with the imaging system based on a heart rate of the patient, scanning the patient with the imaging system for the scanning duration, the scanning commenced independent of a current phase of a cardiac cycle of the heart of the patient, and reconstructing an image from data acquired during the scanning.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: November 2, 2021
    Assignee: GE Precision Healthcare LLC
    Inventors: John Irvin Jackson, John Londt, Darin Robert Okerlund
  • Patent number: 11163073
    Abstract: Among other things, one or more techniques and/or systems are described for creating virtual channels in an imaging modality. The imaging modality comprises a plurality of charge integrating channels. Information yielded from two or more charge integrating channels during a same or similar acquisition view may be combined to yield a virtual channel that represents a portion of the detection surface substantially equivalent to an area comprised by the two or more charge integrating channels. In one embodiment, within a same acquisition view, some virtual channels may comprise a different number of charge integrating channels than other virtual channels. Also, different sets of virtual channels may be created for a same acquisition view to produce different images from a single set of data, for example, where there may be overlap between virtual channels such that the same charge integrating channel is comprised in more than one virtual channel.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: November 2, 2021
    Assignee: Analogic Corporation
    Inventors: Douglas Abraham, David Rozas
  • Patent number: 11158061
    Abstract: Embodiments disclosed herein relate to systems and methods for segmenting 2D images. Certain embodiments provide a method of segmenting a 2D image. The method includes obtaining a 2D mask for the 2D image, wherein the 2D mask comprises a portion of the 2D image. The method includes selecting one or more first voxels of the 2D image not part of the 2D mask and adding the one or more first voxels of the 2D image to the 2D mask. The method includes selecting one or more second voxels of the 2D image and performing a morphological closing on one or more third voxels comprising the one or more second voxels of the 2D image that are part of the 2D mask. The method includes performing an automatic flood-fill operation on at least a portion of the 2D mask.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: October 26, 2021
    Assignee: Materialise N.V.
    Inventor: Lio De Winde
  • Patent number: 11151760
    Abstract: The image reconstruction processing method estimates, in a substance information estimation process, substance information from a reconstructed image for every image update in an image update process, and uses the estimated substance information to update images based on succeeding calculations by successive approximation formulae of a successive approximation method. Since the substance information is estimated, the present methodology can be applied regardless of whether the constituent substance of an imaging sample is known. Further, because the substance information is estimated (updated) from the reconstructed image for every image update in the image update process, reliable substance information can be estimated by avoiding the problem of continuously using the substance information estimated at a point of time where a repeat count (iteration count) by successive approximation formulae is low and at a point of time where the repeat count is high.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: October 19, 2021
    Assignee: Shimadzu Corporation
    Inventor: Kenta Chinomi
  • Patent number: 11145094
    Abstract: The present invention provides an image reconstruction apparatus and an image reconstruction method, both of which achieve reduction in a granular noise and a streak-like artifact both contained in a reconstruction image, and a clear structure boundary as well. The image reconstruction apparatus configured to generate a reconstruction image includes a noise reduction section that generates a streak reduction image as an image obtained by reducing a streak-like artifact in the reconstruction image, a noise reduction ratio acquisition section that acquires a first noise reduction ratio as a noise reduction ratio to be used for reducing a granular noise while retaining a structure boundary in the reconstruction image, and a second noise reduction ratio as a noise reduction ratio to be used for generating the streak reduction image, and an image addition section that adds an addition image to be generated based on the first noise reduction ratio and the second noise reduction ratio to the streak reduction image.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: October 12, 2021
    Assignee: HITACHI, LTD.
    Inventors: Hisashi Takahashi, Taiga Gotou
  • Patent number: 11135452
    Abstract: A radiation system is provided. The radiation system may include a bore accommodating an object, a rotary ring, a first radiation source and a second radiation source mounted on the rotary ring and a processor. The first radiation source may be configured to emit a first cone beam toward a first region of the object. The second radiation source may be configured to emit a second beam toward a second region of the object, the second region including at least a part of the first region. The processor may be configured to obtain a treatment plan of the object, the treatment plan including parameters associated with radiation segments. The processor may be further configured to control an emission of the first cone beam and/or the second beam based on the parameters associated with the radiation segments to perform a treatment and a 3-D imaging simultaneously.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: October 5, 2021
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Jingjie Zhou, Li Wang, Yifeng Jiang, Cheng Ni, Johannes Stahl, Jonathan Maltz
  • Patent number: 11138770
    Abstract: A method may include obtaining scan data that is captured by scanning a heart of a subject with the imaging device. The method may include obtaining electrocardiogram (ECG) data during the scans of the heart of the subject. The method may include determining first scan data from the scan data. The method may include reconstructing the cardiac image based on the first scan data. The method may also include performing one or more iterations. Each of the one or more iterations may include determining whether there is a pulsatile artifact in the reconstructed cardiac image, determining a second time period of at least one cardiac cycle based on the pulsatile artifact, and reconstructing the cardiac image based on the scan data and the second time period.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: October 5, 2021
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Xin Hao, Xiang Li
  • Patent number: 11132782
    Abstract: Included are an inspection unit that outputs a detection signal corresponding to type and size of a foreign matter contained in an inspection object or a detection signal corresponding to weight of the inspection object, a determination unit that performs a pass/fail determination as to the inspection object, based on the detection signal from the inspection unit, an inspection record information accumulation unit that accumulates inspection record information including inspection date and time and inspection data, and a control unit that displays on a display operation unit, a list of inspection data of an inspection object having a defective inspection result from the inspection record information, and if one inspection object is selected from the inspection objects displayed as the list by an operation on the display operation unit, displays on the display operation unit, the inspection data in a predetermined range with reference to the selected inspection object.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: September 28, 2021
    Assignee: ANRITSU CORPORATION
    Inventor: Osamu Takata
  • Patent number: 11129594
    Abstract: A hardness deriving device includes: an acquisition section configured to acquire plural ultrasound images obtained by ultrasound imaging a breast in a state in which the breast is pressed by a pressing member at a plurality of different pressures; and a deriving section configured to find an amount of change at corresponding points between the plural ultrasound images acquired by the acquisition section, and to derive information indicating a hardness of tissue of the breast based on the amount of change at the corresponding points.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: September 28, 2021
    Assignee: FUJIFILM CORPORATION
    Inventor: Tomonari Sendai
  • Patent number: 11123030
    Abstract: An apparatus has an upright gantry. A tube arm assembly and a compression arm assembly are rotatably coupled to the gantry. The tube arm assembly independently rotates relative to the compression arm assembly. A controller disposed on the gantry is operably connected to at least one of the tube arm assembly and the compression arm assembly.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: September 21, 2021
    Assignee: Hologic, Inc.
    Inventors: Suzuko Hisata, Mallory Anne Berko, Jonathan Paul Girgenti, Timothy Wells
  • Patent number: 11123024
    Abstract: Arrangement to reduce a time until a first image is displayed, to reduce a standby time until the next imaging is started, and to uniformize a time interval in a case where a plurality of images are displayed. An X-ray CT device detects a dose of an X-ray, a storage unit that preserves image data, a calculation unit that generates, as the image data, projection data on the basis of the X-ray data in parallel to an imaging process in the scanner, preserves the projection data, notifies a display control unit of preservation information, performs a reconstruction process, a display unit that displays an image generated per the X-ray data, and the display control unit that controls a display timing of a reconstructed image to be displayed on the display unit on the basis of the preservation information and the reconstruction information.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: September 21, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Ryota Kohara, Tsuyoshi Suzuki, Yuta Ogura
  • Patent number: 11113810
    Abstract: An image is generated where an edge of a structure in a subject is sharpened with reducing streak artifacts, within a short amount of time. X-rays at multiple angles are applied to the subject placed in imaging space, and a distribution of X-rays strength passing through the subject is detected to obtain raw data associated with multiple views. After smoothing the raw data associated with multiple views, image reconstruction is performed to generate a smoothed image of a predetermined region to be imaged in the imaging space. In the smoothed image, more intense sharpening process is applied to pixels in a region of a central part of the subject, than the pixels in a region of a peripheral part of the subject.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: September 7, 2021
    Assignee: HITACHI, LTD.
    Inventors: Hisashi Takahashi, Taiga Gotou, Koichi Hirokawa
  • Patent number: 11103205
    Abstract: A method of operating a mobile fluoroscopic imaging system includes positioning an x-ray source and a DR detector about a patient. Data defining a spatial configuration of the x-ray source and the collimator is stored in the system. The system is configured to determine a source-to-image distance of the x-ray source and the DR detector including by activating the x-ray source and capturing a scout image in the DR detector. Dimensions of the scout image are calculated and the source-to-image distance is determined based on the data defining the spatial configuration of the x-ray source and the collimator and on the dimensions of the scout image.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: August 31, 2021
    Assignee: Carestream Health, Inc.
    Inventors: Dennis J. O'Dea, Xiaohui Wang, Samuel Richard, Michael Ficarra, Joseph E. Stagnitto, Michael C. Lalena, Kenneth J. Brown
  • Patent number: 11096641
    Abstract: With the aim of providing a radiation imaging apparatus and a calibration method for photon counting detectors, being able to discriminate between soft and adipose tissues with high accuracy, there is disclosed a radiation imaging apparatus equipped with photon counting detectors which output an electric signal corresponding to photon energy which is energy of radiation photons incident thereon, the radiation imaging apparatus including a storage unit which stores relationships between linear attenuation coefficients and the photon energy with regard to multiple materials; a calculation unit which calculates normalized attenuation coefficients which are linear attenuation coefficients normalized by dividing linear attenuation coefficients per unit of photon energy by a linear attenuation coefficient at given photon energy with respect to each material; and a selection unit which selects basal materials which are used in relation to materials to be discriminated which are intended to be discriminated, based on
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: August 24, 2021
    Assignee: HITACHI, LTD.
    Inventor: Kazuma Yokoi
  • Patent number: 11096639
    Abstract: The invention relates to a subject support device (1) to be used in a projection data acquisition apparatus (2) for acquiring projection data of a subject (3). The subject support device comprises a support component (4) providing a support surface (5) for supporting the subject while acquiring the projection data, a diffraction grating (6) for diffracting x-rays, and a moving unit (7, 8) for moving the support component and the diffraction grating relative to each other. This relative movement can allow for a movement of the support component such that the subject is moved through x-rays (16) for determining projection data of different parts of the subject, while the diffraction grating can still be traversed by the x-rays. These projection data can be used for generating a relatively large phase-contrast and/or dark-field projection image.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: August 24, 2021
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Ewald Roessl, Thomas Koehler
  • Patent number: 11080853
    Abstract: An embodiment of the invention relates to a method for calculating an image matrix size N for reconstructing image data of an examination subject from projection data. The method includes acquiring projection data obtained during a relative rotational movement between a radiation source of a computed tomography system and the examination subject; calculating the image matrix size N as a function of an extent of an axial field of view of the computed tomography system and a sharpness value in the image data to be reconstructed; and making the calculated image matrix size available to a reconstruction unit to reconstruct the image data from the projection data acquired.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: August 3, 2021
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventors: Ute Feuerlein, Martin Petersilka, Rainer Raupach, Johan Sunnegaardh
  • Patent number: 11080899
    Abstract: A method is provided for producing a high-resolution three-dimensional digital subtraction angiography image of an examination object. The method includes: providing or recording of a data set of a three-dimensional rotational run of an imaging system around the examination object without administration of contrast agent (e.g., mask run); motion compensation of the data set of the mask run by a method based on the epipolar consistency conditions; providing or recording of a data set of a three-dimensional rotational run of the imaging system around the examination object with administration of contrast agent (e.g., fill run); motion compensation of the data set of the fill run by a method based on the epipolar consistency conditions; reconstructing a first volume from the compensated data set of the mask run (e.g., mask volume) and a second volume from the compensated data set of the fill run (e.g.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: August 3, 2021
    Assignee: Siemens Healthcare GmbH
    Inventors: Markus Kowarschik, Michael Manhart
  • Patent number: 11062487
    Abstract: The disclosure relates to a system and method for determining and pre-fetching projection data in image reconstruction. The method may include: determining a sequence of a plurality of pixels including a first pixel and a second pixel relating to the first pixel; determining a first geometry calculation used for at least one processor to access a first set of projection data relating to the first pixel from a first storage; determining a second geometry calculation based on the first geometry calculation; determining a first data template relating to the first pixel and a second data template relating to the second pixel based on the second geometry calculation; and pre-fetching a second set of projection data based on the first data template and the second data template, from a storage.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: July 13, 2021
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Mark Magalotti, Patrick Kling
  • Patent number: 11055825
    Abstract: Even a windmill artifact including a high-frequency component in a plane perpendicular to a rotation axis can be reduced and a boundary of an organ can be made to be clear to maintain the contrast. The invention relates to a medical image processing device and includes an image acquiring unit that acquires a 3D volumetric image, a Z high-frequency image generating unit that generates a Z high-frequency image which is a high-frequency component in a rotation axis direction from the 3D volumetric image, an organ component extracting unit that extracts an organ component from the Z high-frequency image, an artifact component extracting unit that extracts an artifact component on the basis of the Z high-frequency image and the organ component, and a corrected image generating unit that generates a corrected image by subtracting the artifact component from the 3D volumetric image.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: July 6, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Taiga Goto, Hisashi Takahashi
  • Patent number: 11039805
    Abstract: A method relates to the use of deep learning techniques, which may be implemented using trained neural networks (50), to estimate various types of missing projection or other unreconstructed data. Similarly, the method may also be employed to replace or correct corrupted or erroneous projection data as opposed to estimating missing projection data.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: June 22, 2021
    Assignee: General Electric Company
    Inventors: Bruno Kristiaan Bernard De Man, Bernhard Erich Hermann Claus, Jiang Hsieh, Yannan Jin, Zhanfeng Xing
  • Patent number: 11041965
    Abstract: A radiation detection device includes a scintillator, a photodetector for detecting scintillation light from the scintillator and outputting a detection signal, a first comparator for comparing the detection signal with a first threshold voltage V1 and outputting a signal having a first time width T1, a first time width measurement device for measuring the first time width T1, a second comparator for comparing the detection signal with a second threshold voltage V2 and outputting a signal having a second time width T2, a second time width measurement device for measuring the second time width T2, and an analysis unit for obtaining a time constant ? indicating a time waveform of the detection signal based on the first and second time widths T1 and T2.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: June 22, 2021
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventor: Ryosuke Ota
  • Patent number: 11042146
    Abstract: A system and method for performing real-time quality inspection of objects is disclosed. The system and method include a transport to move objects being inspected, allowing the inspection to be performed in-line. At least one optical acquisition unit is provided that captured optical images of the objects being inspected. The captured optical images are matched to CAD models of objects, and the matched CAD model is extracted. A laser with an illumination light beam has a wavelength in the violet or ultraviolet range then conducts scans of the objects, which are formed into three-dimensional point clouds. The point clouds are compared to the extracted CAD models for each object, where CTF are compared to user input or CAD model information and the object is determined to be acceptable or defective based on the extent of deviation between the point cloud and the CAD model.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: June 22, 2021
    Assignee: KODAK ALARIS INC.
    Inventors: Bruce A. Link, Robert W. Johnson, Jose Zvietcovich Zegarra, Peter O. Stubler, Mark Barton, Frank R. Brockler, Michael S. Axman, Madirakshi Das, Gabor J. Ferencz, Jr., Erik Garcell
  • Patent number: 11037338
    Abstract: This disclosure introduces an approach that includes techniques for determining an optimal weighted execution sequence of available reconstruction algorithms using a multi-processor unit. The introduced approach includes executing a series of optimal weighted execution sequence candidates on a representative slice of the image data and comparing their results to select one of the candidates as the optimal weighted execution sequence.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: June 15, 2021
    Assignee: Nvidia Corporation
    Inventor: Shekhar Dwivedi