Canon Patent Applications

Patents granted to Canon by the U.S. Patent and Trademark Office (USPTO).

  • Publication number: 20200207568
    Abstract: Provided is a sheet stacking apparatus including an aligning member lifting-lowering device configured to lift and lower aligning members between an aligning position where the aligning members abut to and align the sheets and a retreating position where the aligning members are lifted from an upper surface of the sheets, an aligning member moving device configured to move the aligning members in a sheet width direction, and a stack tray lifting-lowering device configured to lift and lower a stack tray based on a detection result of a sheet surface detecting device. A controller lifts the aligning members to the retreating position with the aligning member lifting-lowering device after the sheets stacked on the stack tray is aligned at the aligning position, and stops lifting-lowering operation of the stack tray lifting-lowering device while the aligning members are moved in the sheet width direction with the aligning member moving device.
    Type: Application
    Filed: November 27, 2019
    Publication date: July 2, 2020
    Applicant: CANON FINETECH NISCA INC.
    Inventor: Toshiyuki IWATA
  • Publication number: 20200209333
    Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes processing circuitry. The processing circuitry is configured to apply a filter to each of a first real-part image and a first imaginary-part image of a first complex image generated based on acquired magnetic resonance data and thereby generate a second complex image that includes a second real-part image and a second imaginary-part image. The processing circuitry is configured to generate a phase image denoised by the filter, the denoised phase image generated based on the second real-part image and the second imaginary-part image. The processing circuitry is configured to generate an intensity image related to an absolute value of the first complex image based on pixel values of the denoised phase image, the first real-part image, and the first imaginary-part image.
    Type: Application
    Filed: December 19, 2019
    Publication date: July 2, 2020
    Applicant: Canon Medical Systems Corporation
    Inventor: Kenzo ISOGAWA
  • Publication number: 20200211808
    Abstract: An X-ray generating tube includes an insulating tube having a first open end and a second open end, a cathode including an electron emission source and arranged to close the first open end of the insulating tube, an anode including a target that generates an X-ray upon collision with electron from the electron emission source and arranged to close the second open end of the insulating tube, and a tubular electrical conductive member extending from the anode in an inner space of the insulating tube. The insulating tube includes a tubular rib at a position spaced apart from the first open end and spaced apart from the second open end, and the tubular rib is arranged in a radial direction when viewed from an end of the tubular electrical conductive member on a side of the cathode.
    Type: Application
    Filed: June 24, 2019
    Publication date: July 2, 2020
    Applicant: Canon Anelva Corporation
    Inventor: Yoichi ANDO
  • Publication number: 20200209182
    Abstract: A nucleic acid inspection apparatus has an installer to install a nucleic acid inspection device, the installer comprising a storage unit to store at least a specimen sample, an amplifier to amplify nucleic acid contained in the specimen sample stored in the storage unit, a first flow passage to move the specimen sample from the storage unit to the amplifier, an inspection unit, and a second flow passage to move the specimen sample from the amplifier to the inspection unit, a first opening/closing unit to open/close the first flow passage, a second opening/closing unit to open/close the second flow passage, a heater to heat the amplifier, and a controller to control the first and second opening/closing units so as to open/close in a predetermined order and to control the heater so as to heat the amplifier in conjunction with opening/closing operations of the first and second opening/closing units.
    Type: Application
    Filed: January 2, 2020
    Publication date: July 2, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Tetsuya KUWABARA, Jun OKADA, Hirotaka UNNO, Masayuki YUMOTO, Yutaka MURANO
  • Publication number: 20200205751
    Abstract: A medical processing apparatus includes processing circuitry. Based on a first number of X-ray datasets that correspond to the first number of energies and that are acquired by scanning a subject with X-rays, the processing circuitry generates a second number of virtual monochromatic X-ray datasets, which is a number larger than the first number. Based on the second number of virtual monochromatic X-ray datasets, the processing circuitry estimates quantities of the second number of reference materials mixed or a mixing ratio between the second number of reference materials for each of multiple positions in the subject.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 2, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Hiroki Taguchi
  • Publication number: 20200207569
    Abstract: A sheet pressing device includes a carry-in port that receives a Z-folded sheet having two folds; an additional folding roller disposed downstream of the carry-in port to press the fold; a lower folding guide having a pedestal disposed opposite to the additional folding roller; a first moving mechanism that moves the additional folding roller between a pressing position at which the additional folding roller is made to approach the pedestal and a retreat position at which the additional folding roller is moved relative to the pedestal from the pressing position; a second moving mechanism that moves the additional folding roller along the fold; and a control part. The control part controls the second moving mechanism so as to increase the number of times the additional folding roller is moved along the fold when a sheet section is positioned between the additional folding roller and the fold.
    Type: Application
    Filed: August 9, 2019
    Publication date: July 2, 2020
    Applicant: CANON FINETECH NISCA INC.
    Inventor: Shinnosuke ENOMOTO
  • Publication number: 20200205762
    Abstract: An X-ray diagnostic apparatus according to an embodiment includes a support frame and processing circuitry. The support frame supports an X-ray generator and an X-ray detector. The processing circuitry is configured to, when rotational acquisitions are performed multiple times after a contrast agent is injected one time, previously set a generation condition of an X-ray that is generated by the X-ray generator for each of the rotational acquisitions, the rotational acquisitions being performed while the support frame is rotated around a subject.
    Type: Application
    Filed: March 6, 2020
    Publication date: July 2, 2020
    Applicants: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Shinji ASHIDA, Satoru OHISHI
  • Publication number: 20200202999
    Abstract: According to one embodiment, a data processing apparatus includes processing circuitry. The processing circuitry is configured to group a plurality of channels of input data based on a physical relationship between the input data to classify the plurality of channels into a plurality of subsets. The processing circuitry is configured to perform convolutional processing of the input data in units of subsets for the plurality of subsets.
    Type: Application
    Filed: November 27, 2019
    Publication date: June 25, 2020
    Applicant: Canon Medical Systems Corporation
    Inventor: Hidenori TAKESHIMA
  • Publication number: 20200202588
    Abstract: A method and apparatus is provided to iteratively reconstruct a computed tomography (CT) image using a spatially-varying content-oriented regularization parameter, thereby achieving uniform statistical properties within respective organs/regions and different statistical properties (e.g., degree of smoothing and noise level) among the respective organs/regions. For example, less smoothing and sharper features/resolution can be applied within a lung region than within a soft-tissue region by using a smaller regularization parameter value in the lung region than in the soft-tissue region. This can be achieved, e.g., using a minimum intensity projection to suppress/eliminate sub-solid nodules in the lung region. The content-oriented regularization parameter can be generated by reconstructing an initial CT image, which is then segmented/classified according to organs and/or tissue type.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 25, 2020
    Applicants: CANON MEDICAL SYSTEMS CORPORATION, UNIVERSITY HEALTH NETWORK
    Inventors: Chung CHAN, Zhou YU, Jian ZHOU, Patrik ROGALLA, Bernice HOPPEL, Kurt Walter SCHULTZ
  • Publication number: 20200196972
    Abstract: A deep learning (DL) network corrects/performs sinogram completion in computed tomography (CT) images based on complementary high- and low-kV projection data generated from a sparse (or fast) kilo-voltage (kV)-switching CT scan. The DL network is trained using inputs and targets, which respectively generated with and without kV switching. Another DL network can be trained to correct sinogram-completion errors in the projection data after a basis/material decomposition. A third DL network can be trained to correct sinogram-completion errors in reconstructed images based on the kV-switching projection data. Performance of the DL network can be improved by dividing a 3D convolutional neural network (CNN) into two steps performed by respective 2D CNNs. Further, the projection data and DLL can be divided into high- and low-frequency components to improve performance.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 25, 2020
    Applicant: Canon Medical Systems Corporation
    Inventors: Jian ZHOU, Ruoqiao Zhang, Zhou Yu, Yan Liu
  • Publication number: 20200196973
    Abstract: A deep learning (DL) network reduces artifacts in computed tomography (CT) images based on complementary sparse-view projection data generated from a sparse kilo-voltage peak (kVp)-switching CT scan. The DL network is trained using input images exhibiting artifacts and target images exhibiting little to no artifacts. Another DL network can be trained to perform image-domain material decomposition of the artifact-mitigated images by being trained using target images in which beam hardening is corrected and spatial variations in the X-ray beam are accounted for. Further, material decomposition and artifact mitigation can be integrated in a single DL network that is trained using as inputs reconstructed images having artifacts and as targets material images without artifacts with beam-hardening corrections, etc. Further, the target material images can be transformed using a whitening transform to decorrelate noise.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 25, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Jian ZHOU, Yan LIU, Zhou YU
  • Publication number: 20200203003
    Abstract: A management device in an embodiment includes a processing circuit configured to collect identification information that identifies an application utilized for image analysis of a medical image utilized for generation of a medical report from a plurality of medical reports, and to output information indicating utilization status of the application by using a plurality of pieces of the collected identification information.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 25, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yosuke Yanagida, Kenji Matsue, Maiko Tezuka, Yosuke Okubo
  • Publication number: 20200200848
    Abstract: According to one embodiment, a medical information processing apparatus includes processing circuitry configured to derive an index value with respect to noise included in data associated with magnetic resonance signals collected by each of a plurality of reception coils, adjust a degree to which noise is removed from the data associated with the magnetic resonance signals based on the derived index value, remove noise from the data associated with the magnetic resonance signals based on the adjusted degree, and perform compositing of the data associated with the magnetic resonance signals from which noise has been removed.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 25, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yuichi YAMASHITA, Kazuto NAKABAYASHI, Hitoshi KANAZAWA, Kazuya OKAMOTO, Hiroshi TAKAI, Nobuyuki KONUMA, Kensuke SHINODA
  • Publication number: 20200187897
    Abstract: An ultrasonic wave diagnostic apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires a plurality of pieces of volume data obtained through image capturing of a region including the cardiac ventricle of a subject for a predetermined duration. The processing circuitry estimates motion of tissue of the cardiac ventricle by using the pieces of volume data. The processing circuitry calculates, based on a result of the estimation, cardiac ventricle information indicating at least one of wall motion information and volume information related to the cardiac ventricle. The processing circuitry calculates, based on a result of the estimation, annulus information related to the size or shape of an annulus position of a valve related to inflow or outflow of blood current at the cardiac ventricle. The processing circuitry outputs the cardiac ventricle information and the annulus information.
    Type: Application
    Filed: December 13, 2019
    Publication date: June 18, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Yasuhiko ABE
  • Publication number: 20200193595
    Abstract: A medical information processing apparatus according to an embodiment includes: a memory storing therein a trained model provided with a function to specify, on the basis of input information including a medical image and medical examination information related to the medical image, at least one selected from between a relevant image relevant to the medical image and an image processing process performed on the basis of the medical image; and processing circuitry configured to give an evaluation to at least one selected from between the relevant image and the image processing process specified by the trained model.
    Type: Application
    Filed: December 17, 2019
    Publication date: June 18, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Taisuke IWAMURA, Keita MITSUMORI
  • Publication number: 20200193655
    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: Application
    Filed: December 17, 2019
    Publication date: June 18, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Hiroki TAGUCHI, Akshay Narayan PRABHU VERLEKER, Yuki HOUNO, Satoshi SAITO
  • Publication number: 20200191895
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes sequence control circuitry and processing circuitry. The sequence control circuitry executes a first pulse sequence and a second pulse sequence, the first pulse sequence including a first spoiler pulse serving as a dephasing gradient pulse of a first amount, the second pulse sequence including a second spoiler pulse serving as a dephasing gradient pulse of a second amount being different from the first amount or the second pulse sequence not including a spoiler pulse serving as a dephasing gradient pulse. The processing circuitry performs a subtraction operation between a first data obtained from the first pulse sequence and a second data obtained from the second pulse sequence, thereby generating an image.
    Type: Application
    Filed: February 26, 2020
    Publication date: June 18, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Mitsue MIYAZAKI, Xiangzhi ZHOU, Aiming LU
  • Publication number: 20200189872
    Abstract: A sheet processing apparatus arranged in a space between an image reading section for reading an image and an image formation section for forming an image on a sheet includes a carry-in path guiding a sheet from a carry-in entrance; a relay roller provided in the carry-in path to relay and transport the sheet; a first transport path positioned on a downstream side of the relay roller and having a carry-in roller to transport the sheet from the carry-in path to the first collection tray; and a second transport path branched from the carry-in path and having a branch roller to transport the transported sheet to the second collection tray. The relay roller shifts the sheet in a direction crossing the transport direction while a front end of the sheet enters the first transport path or the second transport path, and arrives at the carry-in roller or the branch roller.
    Type: Application
    Filed: February 20, 2020
    Publication date: June 18, 2020
    Applicant: CANON FINETECH NISCA INC.
    Inventor: Takahiro NAKANO
  • Publication number: 20200180897
    Abstract: Provided is a sheet folding apparatus for folding sheets, including: a feeding-roller pair; a loop-forming space provided downstream from the feeding-roller pair, for forming a sheet loop; a pushing member for pushing the looped sheet; a folding-roller pair for nipping a prescribed part of the sheet pushed by the pushing member, thereby to fold the sheet; and a path provided between the feeding-roller pair and the folding-roller pair, for guiding the sheet fed from the feeding-roller pair toward the loop-forming space.
    Type: Application
    Filed: December 9, 2019
    Publication date: June 11, 2020
    Applicant: CANON FINETECH NISCA INC.
    Inventors: Tomohisa SHIMIZU, Shogo IWAI
  • Publication number: 20200180882
    Abstract: In order to properly suppress a discharge defect corresponding to an image ratio of a sheet, in the case where a coefficient of friction is different according to the image ratio of an image on the sheet, an air blowing section is arranged to blow air toward a downstream side in a transport direction from between a downstream-side end portion of a first stacking section and an upstream-side end portion of a second stacking section. When an image ratio of an image on a sheet by an image forming apparatus is a first value, the air blowing section sets an air quantity blown to the sheet at a first air quantity F1, while when the image ratio is a second value higher than the first value, setting the air quantity blown to the sheet at a second air quantity F2 larger than the first air quantity F1.
    Type: Application
    Filed: December 6, 2019
    Publication date: June 11, 2020
    Applicant: CANON FINETECH NISCA INC.
    Inventor: Mamoru KUBO
  • Publication number: 20200180893
    Abstract: A sheet discharge apparatus includes a first tray for stacking sheets, and a sheet bundle forming unit that forms a sheet bundle on the first tray. The sheet bundle forming unit forms a first sheet bundle on the first tray, and forms a second sheet bundle on the first sheet bundle to be offset from the first sheet bundle. When forming each of the first sheet bundle and the second sheet bundle on the first tray, the sheet bundle forming unit divides sheets constituting each of the sheet bundles into a plurality of sets and discharges the sheets in a plurality of times for each sheet bundle. A number of sheets included in a first sheet set of the first sheet bundle is set smaller than a number of sheets included in a first sheet set of the second sheet bundle.
    Type: Application
    Filed: February 10, 2020
    Publication date: June 11, 2020
    Applicant: CANON FINETECH NISCA INC.
    Inventor: Satoru MATSUKI
  • Publication number: 20200180894
    Abstract: A sheet folding processing device includes a folding processing mechanism that includes a folding roller pair for forming a plurality of folds on the sheet conveyed in a predetermined sheet conveying direction to produce Z-fold, additional folding rollers and a lower folding guide. The additional folding rollers and the lower folding guide are arranged on the downstream side of the folding roller pair in the sheet conveying direction to face each other and cooperate with each other to press the folds. The interval between the folding roller pair and the additional folding rollers is determined such that when the leading fold as viewed in the sheet conveying direction is pressed between the additional folding rollers and the lower folding guide, the sheet part having a plurality of layers of sheet where the sheet is folded between the additional folding rollers can also be held between the folding roller pair.
    Type: Application
    Filed: December 10, 2019
    Publication date: June 11, 2020
    Applicant: CANON FINETECH NISCA INC.
    Inventor: Shinnosuke ENOMOTO
  • Publication number: 20200180898
    Abstract: The sheet pressing apparatus includes an inlet port configured to receive a sheet having a folding line; additional-folding rollers arranged downstream of the inlet port and configured to press the sheet at the folding line; a lower folding guide opposing the additional-folding rollers; a first drive mechanism configured to move the additional-folding rollers between a pressing position, at which the additional-folding rollers approach the lower folding guide to press the sheet at the folding line, and a retreat position to which the additional-folding rollers are moved with respect to the lower folding guide from the pressing position; a second drive mechanism configured to move the additional-folding rollers along the folding line; and a restriction member configured to restrict, at a preset restriction position, the sheet thickness at the folding line to a value equal to or less than a prescribe value, while the additional-folding rollers are moving.
    Type: Application
    Filed: December 9, 2019
    Publication date: June 11, 2020
    Applicant: CANON FINETECH NISCA INC.
    Inventor: Shinnosuke ENOMOTO
  • Publication number: 20200180896
    Abstract: Disclosed herein is a sheet-folding apparatus which includes transporting rollers, folding rollers, a pushing member provided between the transporting rollers and the folding-rollers, and a guide unit for guiding the sheet to the folding-roller pair by using the pushing member.
    Type: Application
    Filed: December 9, 2019
    Publication date: June 11, 2020
    Applicant: CANON FINETECH NISCA INC.
    Inventors: Tomohisa SHIMIZU, Dai TAMURA, Daichi TOJO
  • Publication number: 20200183025
    Abstract: A method and apparatus are provided for positron emission imaging to calibrate timing of a pixelated gamma detector using multi-channel events. The apparatus can include processing circuitry configured to obtain calibration data representing a time and a position at which gamma rays are detected at a plurality of detector elements, and determine which gamma-ray detections of the calibration data correspond to multi-channel detections in which energy of a respective gamma ray is shared and detected by two or more of the plurality of detector elements. Additionally, the processing circuitry can be configured to determine a timing calibration of the plurality of detector elements by optimizing an objective representing agreement between time data of the multi-channel detections in the calibration data and the timing calibration.
    Type: Application
    Filed: December 6, 2018
    Publication date: June 11, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yi Qiang, Xiaoli Li, Kent C. Burr
  • Publication number: 20200185184
    Abstract: According to one embodiment, an X-ray tube includes an anode including a target surface, and a cathode including a first filament and a focusing electrode. The focusing electrode includes a valley bottom portion, a first inclined plane sloping up from the valley bottom portion in a direction of the anode, a first focusing groove, and a first storage groove. ?1 is greater than 0°. The first focusing groove has a longitudinal axis. One end portion on the first extension line side of the first focusing groove is closer to a first reference surface than the other end portion of the first focusing groove.
    Type: Application
    Filed: January 29, 2020
    Publication date: June 11, 2020
    Applicant: Canon Electron Tubes & Devices Co., Ltd.
    Inventor: Takayuki Ito
  • Publication number: 20200180899
    Abstract: A sheet pressing apparatus includes an inlet port for receiving a sheet having a folding line; additional folding rollers supported by a supporting member arranged downstream from the inlet port; a lower folding guide opposing the additional folding rollers; a first drive mechanism configured to move the additional folding rollers between a pressing position, at which the additional folding rollers approach the lower folding guide to press the sheet at the folding line, and a retreat position to which the additional folding rollers are moved from the pressing position, separating from the sheet; and a second drive mechanism configured to move the additional folding rollers along the folding line. The additional folding rollers are arranged such that one end of the folding line exists between the two additional folding rollers provided at one position and the additional folding roller at the other end position is arranged on the folding line.
    Type: Application
    Filed: December 10, 2019
    Publication date: June 11, 2020
    Applicant: CANON FINETECH NISCA INC.
    Inventor: Shinnosuke ENOMOTO
  • Publication number: 20200174717
    Abstract: A method of editing a print document includes an impositioning step for determining positions of print objects in a document to be printed, the positions being determined in view of a later step of finishing the document after printing. The method includes providing document data on a client computer; sending document data to a cloud computer and requesting the cloud computer to perform the impositioning step; and sending the impositioned document data to a printer for printing the document. The method also includes splitting the document data into contents data and box information data, the box information data specifying shapes and dimensions and intended positions of the print objects; sending only the box information data to the cloud computer; and when the cloud computer has performed the impositioning step on the box information data, merging the impositioned box information data with the contents data either in the client computer or at the printer.
    Type: Application
    Filed: February 7, 2020
    Publication date: June 4, 2020
    Applicant: Canon Production Printing Holding B.V.
    Inventor: Marvin P. BRUNNER
  • Publication number: 20200175731
    Abstract: A method and apparatus is provided to reconstruct a computed tomography image using iterative reconstruction (IR) that is accelerated using various combinations of ordered subsets, conjugate gradient, preconditioning, resetting/restarting, and/or gradient approximation techniques. For example, when restarting criteria are satisfied the IR algorithm can be reset by setting conjugate-gradient parameters to initial values and/or by changing the number of ordered subsets. The IR algorithm can be accelerated by approximately calculating the gradients, by using a diagonal or Fourier preconditioner, and by selectively updating the preconditioner based on the regularization function. The update direction and step size can be calculated using the preconditioner and a surrogate function, which is not necessarily separable.
    Type: Application
    Filed: November 30, 2018
    Publication date: June 4, 2020
    Applicants: CANON MEDICAL SYSTEMS CORPORATION, THE UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, Inc.
    Inventors: Alexander KATSEVICH, Zhou YU, Daxin SHI
  • Publication number: 20200174092
    Abstract: A magnetic resonance imaging method according to an embodiment includes performing a balanced SSFP sequence, repeatedly applies an excitation RF pulse to a subject at intervals of a repetition time and applies gradient magnetic field pulses balanced such that a time integral becomes zero within each interval of the repetition time, while further applying a spin labeling gradient magnetic field for generating one or more continuous spin labels within each interval of the repetition time.
    Type: Application
    Filed: November 29, 2019
    Publication date: June 4, 2020
    Applicants: Keio University, CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Koichi OSHIO, Shinya YAMADA, Masao YUI, Seiko SAKURABA
  • Publication number: 20200170605
    Abstract: A method and apparatus is provided to correct for scatter in a positron emission tomography (PET) scanner, the scatter coming from both within and without a field of view (FOV) for true coincidences. For a region of interest (ROI), the outside-the-FOV scatter correction are based on attenuation maps and activity distributions estimated from short PET scans of extended regions adjacent to the ROI. Further, in a PET/CT scanner, these short PET scans can be accompanied by low-dose X-ray computed tomography (CT) scans in the extended regions. The use of short PET scans, rather than full PET scans, provides sufficient accuracy for outside-the-FOV scatter corrections with the advantages of a lower radiation dose (e.g., low-dose CT) and requiring less time. In the absence of low-dose CT scans, an atlas of attenuation maps or a joint-estimation method can be used to estimate the attenuation maps for the extended regions.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 4, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Wenyuan QI, Chung Chan, Li Yang, Evren Asma
  • Publication number: 20200174088
    Abstract: In one embodiment, an MRI apparatus includes: a scanner that is provided with at least an RF coil and a gradient coil and is configured to acquire a magnetic resonance (MR) signal emitted from an object in response to applications of an RF pulse outputted from the RF coil and a gradient magnetic field generated by the gradient coli; and processing circuitry configured to reconstruct a diagnostic image of the object based on the MR signal, generate distortion correction data for correcting a non-linear characteristic of the gradient magnetic field to a linear characteristic that is defined by gradient magnetic field strength at a correction position away from a magnetic field center of the gradient coil and distance from the magnetic field center to the correction position, and correct the diagnostic image by using the distortion correction data.
    Type: Application
    Filed: November 25, 2019
    Publication date: June 4, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Yoshitomo SAKAKURA, Hidekazu Tanaka
  • Publication number: 20200163550
    Abstract: A medical image diagnosis apparatus according to an embodiment includes an imager, a storage, and processing circuitry. The storage stores therein a correspondence relationship between each of disease patterns and scans used for performing a differential diagnosis process on the disease pattern. The processing circuitry obtains, based on image data acquired by a first scan, a disease pattern having a possibility of being applicable to the subject and a first index value indicating a degree of applicability of the disease pattern. The processing circuitry outputs information indicating the disease pattern to a display when it is possible to perform the differential diagnosis process based on the first index value and outputs an imaging condition used for performing a second scan based on the correspondence relationship and the disease pattern having the possibility when it is not possible to perform the differential diagnosis process based on the first index value.
    Type: Application
    Filed: February 14, 2019
    Publication date: May 28, 2020
    Applicant: Canon Medical Systems Corporation
    Inventors: Takuma IGARASHI, Qiqi XU, Fanjie MENG
  • Publication number: 20200167912
    Abstract: A medical image diagnostic apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain image data which is generated by scanning a brain of a subject; select a target region from the image data; extract a connected region of which a brain function is associated with a brain function of the target region, as an additional region; and output scan target region including the target region and the additional region.
    Type: Application
    Filed: October 14, 2019
    Publication date: May 28, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Qiqi XU, Fanjie MENG, Hitoshi YAMAGATA
  • Publication number: 20200159157
    Abstract: A sheet processing apparatus includes a conveying portion; a conveying path for sheets conveyed by the conveying portion; a stack portion where sheets discharged from the conveying path are stacked; a first binding portion moving in a crossing direction crossing the conveying direction; a first regulating portion regulating a position of a sheet bundle stacked on the stack portion; a first guide member guiding the first regulating portion; a second regulating portion regulating a position of a sheet bundle on the stack portion in the crossing direction; a second guide member guiding the second regulating portion; a third regulating portion regulating a position of a sheet bundle on the stack portion in the conveying direction; and a second binding portion binding a corner portion of a sheet bundle without a staple. The first binding portion binds a corner portion of a sheet bundle by a staple.
    Type: Application
    Filed: January 27, 2020
    Publication date: May 21, 2020
    Applicant: CANON FINETECH NISCA INC.
    Inventors: Yusuke OBUCHI, Hideto ABE, Masaya TAKAHASHI, Seiji NISHIZAWA
  • Publication number: 20200155094
    Abstract: A medical image processing apparatus of an embodiment includes a processing circuitry. The processing circuitry extracts a plurality of valve leaflets of a heart valve from image data of a subject. The processing circuitry measures, with respect to at least one valve leaflet of the valve leaflets, a length of a region at which the valve leaflet is in contact with another valve leaflet, in a predetermined reference direction. The processing circuitry controls a display to display a distribution of the length at each of a plurality of positions on the valve leaflet.
    Type: Application
    Filed: January 24, 2020
    Publication date: May 21, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Takahiko NISHIOKA
  • Publication number: 20200160981
    Abstract: According to one embodiment, a medical image processing apparatus of an embodiment includes an acquirer, a reliability setter and a learner. The acquirer acquires training data created by a creator on the basis of a medical image. The reliability setter sets, to the training data acquired by the acquirer, reliability information based on a creation situation of the training data or information about the creator who created the training data. The learner generates a learned model using the training data according to weighting based on the reliability information set by the reliability setter.
    Type: Application
    Filed: November 14, 2019
    Publication date: May 21, 2020
    Applicant: Canon Medical Systems Corporation
    Inventors: Nozomi Masubuchi, Ryo Shiraishi, Takuya Sakaguchi
  • Publication number: 20200158806
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a monitoring coil, a measuring device, and processing circuitry. The monitoring coil continuously transmits to a subject an electromagnetic wave having a monitoring frequency, and without touching the subject. The measuring device measures a change in the impedance related to the monitoring coil over time to thereby generate a biosignal of the subject. The processing circuitry is configured to determine the monitoring frequency that is higher than a frequency of a high-frequency magnetic field based on the information of the subject, and to controls a sequence related to the imaging based on the biosignal.
    Type: Application
    Filed: November 18, 2019
    Publication date: May 21, 2020
    Applicant: Canon Medical Systems Corporation
    Inventor: Kazuya OKAMOTO
  • Publication number: 20200150198
    Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes processing circuitry. The processing circuitry acquires an ambient temperature relating to a magnetic resonance imaging examination and determines an interlock value of a specific absorption rate (SAR) in accordance with the ambient temperature.
    Type: Application
    Filed: November 7, 2019
    Publication date: May 14, 2020
    Applicant: Canon Medical Systems Corporation
    Inventor: Sadanori TOMIHA
  • Publication number: 20200138395
    Abstract: A medical image diagnostic apparatus of embodiments includes an acquisition unit and a processing unit. The acquisition unit acquires physical characteristics data of an examination subject and information about an imaging target portion. The processing unit is configured to output bed position information about the examination subject according to the acquired physical characteristics data and the information about the imaging target portion by inputting the physical characteristics data and the information about the imaging target portion acquired by the acquisition unit to a trained model which is configured to output bed position information on the basis of physical characteristics data and information about a imaging target portion.
    Type: Application
    Filed: October 18, 2019
    Publication date: May 7, 2020
    Applicant: Canon Medical Systems Corporation
    Inventors: Nobuto TSUCHIYA, Michito NAKAYAMA
  • Publication number: 20200146135
    Abstract: An X-ray diagnostic apparatus according to an embodiment includes: an X-ray tube including a target configured to generate X-rays in response to emission of electrons thereto, a plurality of filaments configured to emit electrons into substantially the same position on the target, and a grid used in common among the plurality of filaments; intermediate potential setting circuitry configured to set intermediate potential in a position between the plurality of filaments and the target by using the grid; and filament potential controlling circuitry configured to change one or more filaments selected from among the plurality of filaments to emit the electrons to the target, by controlling potential levels of the plurality of filaments with respect to the intermediate potential for each filament, in conjunction with switching of X-ray tube voltage.
    Type: Application
    Filed: October 15, 2019
    Publication date: May 7, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Akio Tetsuka, Yuki Totsuka
  • Publication number: 20200138383
    Abstract: A medical information processing apparatus according to an embodiment includes a specifying unit, an obtaining unit, a determining unit, and a display controlling unit. The specifying unit specifies principal data from among a plurality of types of diagnosis/treatment data. The obtaining unit obtains peripheral data that is diagnosis/treatment data having a high degree of relevance to the principal data, by using the principal data as a reference. The determining unit determines a screen configuration indicating positional arrangements of the principal data and the peripheral data to be used at the time of displaying the principal data and the peripheral data, in accordance with an attribute of the peripheral data with respect to the principal data. The display controlling unit displays the principal data and the peripheral data on a display screen of a display by using the screen configuration.
    Type: Application
    Filed: October 22, 2019
    Publication date: May 7, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Kazumasa NORO, Kazuki UTSUNOMIYA, Yudai Yamazaki
  • Publication number: 20200138386
    Abstract: A method and apparatuses are provided to identify and correct partial volume errors (PVEs) in material decomposition of a spectral computed tomography (CT) scan, due to different X-ray trajectories incident on a same macro-pixel passing through different material components (e.g., bone and water). Macro-pixels are virtual crystals generated by aggregating the signals/counts from several smaller actual pixels (i.e., micro-pixels) of a detector array. Thus, when a PVE is identified within a macro-pixel, the separate signals/counts from the micro-pixels can be used for material decomposition, instead of the aggregated signals/counts of the macro-pixel, thereby providing improved spatial resolution of the material components and, at least partial, overcoming the PVE. A measure of the difference between spectrally-resolved counts based a material projection lengths (e.g., from a calibrated lookup table) and the measured counts of the macro-pixel can be used to identify PVEs, e.g.
    Type: Application
    Filed: November 6, 2018
    Publication date: May 7, 2020
    Applicant: Canon Medical Systems Corporation
    Inventors: Kevin Christopher ZIMMERMAN, Liang CAI, Hiroaki MIYAZAKI, Xiaohui ZHAN
  • Publication number: 20200129137
    Abstract: An X-ray CT apparatus according to an embodiment includes: an X-ray generator configured to generate X-rays; an X-ray detector configured to detect X-rays that have passed through a patient and including first to n-th groups of detecting elements configured to store therein electric charges generated from the detection (where n is an integer of 2 or larger); a Data Acquisition System (DAS) configured to acquire detection data for each view, by repeatedly performing a process of sequentially reading the electric charges stored in the first to the n-th groups of detecting elements in units of groups, starting with the first group of detecting elements; and processing circuitry configured to periodically change energy of X-rays radiated onto the patient and to also control the X-ray generator so that, while the detection data related to one view or a plurality of consecutive views is acquired, an average energy level of the X-rays radiated onto the patient is substantially equal among the groups of detecting ele
    Type: Application
    Filed: October 11, 2019
    Publication date: April 30, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Masaharu TSUYUKI
  • Publication number: 20200129141
    Abstract: According to one embodiment, an image processing apparatus includes at least one of memory and processing circuitry. The memory stores a first medical image of a heart area acquired in a plurality of directions and a second medical image of the heart area acquired in real time. The processing circuitry is configured to set, based on the first medical image, each of a valve boundary line indicating a boundary between leaflets of a heart valve and an insertion point on an inner wall through which a catheter is inserted, generate a navigation graphic including the valve boundary line and the safety lines by generating a plurality of safety lines individually connecting the insertion point to ends of the valve boundary line, and superimpose the navigation graphic on the second medical image to generate a superimposed image.
    Type: Application
    Filed: October 31, 2018
    Publication date: April 30, 2020
    Applicants: Canon Medical Systems Corporation
    Inventors: Richard SMALLING, Andrew KUHLS-GILCRIST, Takuya SAKAGUCHI, Manabu TANAKA
  • Publication number: 20200134818
    Abstract: In one embodiment, a medical image processing apparatus includes: processing circuitry configured to acquire three-dimensional image data including a liver of a donor, extract a region of the liver and vessels in the liver from the three-dimensional image data, and determine, in the extracted region of the liver, a cross section of the liver in such a manner that volume of the liver to be resected from the donor satisfies a predetermined matching condition of transplantation and number of vessels on the cross section becomes smaller.
    Type: Application
    Filed: October 22, 2019
    Publication date: April 30, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Chihiro HATTORI, Kota Aoyagi
  • Publication number: 20200126766
    Abstract: A plasma processing apparatus includes a balun having a first input terminal, a second input terminal, a first output terminal, and a second output terminal, a vacuum container, a first electrode electrically connected to the first output terminal, a second electrode electrically connected to the second output terminal, and a connection unit configured to electrically connect the vacuum container and ground, the connection unit including an inductor.
    Type: Application
    Filed: December 19, 2019
    Publication date: April 23, 2020
    Applicant: Canon Anelva Corporation
    Inventors: Kazunari SEKIYA, Masaharu TANABE, Tadashi INOUE, Hiroshi SASAMOTO, Tatsunori SATO, Nobuaki TSUCHIYA
  • Publication number: 20200128166
    Abstract: An imaging apparatus according to an embodiment includes a first light source which emits first light, a second light source which emits second light, an imaging sensor, and control circuitry. The image sensor includes a plurality of pixels to receive light from an object, reads an electric signal generated by the pixel with a rolling shutter method, and outputs the electric signal for each frame. The control circuitry causes the first light source to be turned on M (M is an integer equal to or less than N) times in N frames in synchronization with a first period based on a blanking period of the frame, and causes the second light source to be turned on by selectively using multiple lighting patterns in which lighting timing is set in synchronization with the first period and a total lighting period in the N frames is different.
    Type: Application
    Filed: September 25, 2019
    Publication date: April 23, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Junya FUKUMOTO
  • Publication number: 20200126768
    Abstract: A plasma processing apparatus includes a balun having a first unbalanced terminal, a second unbalanced terminal, a first balanced terminal, and a second balanced terminal, a grounded vacuum container, a first electrode electrically connected to the first balanced terminal, and a second electrode electrically connected to the second balanced terminal. When Rp represents a resistance component between the first balanced terminal and the second balanced terminal when viewing a side of the first electrode and the second electrode from a side of the first balanced terminal and the second balanced terminal, and X represents an inductance between the first unbalanced terminal and the first balanced terminal, 1.5?X/Rp?5000 is satisfied.
    Type: Application
    Filed: December 19, 2019
    Publication date: April 23, 2020
    Applicant: Canon Anelva Corporation
    Inventors: Tadashi INOUE, Masaharu TANABE, Kazunari SEKIYA, Hiroshi SASAMOTO, Tatsunori SATO, Nobuaki TSUCHIYA
  • Publication number: 20200126767
    Abstract: A plasma processing apparatus includes a balun having a first unbalanced terminal, a second unbalanced terminal, a first balanced terminal, and a second balanced terminal, a grounded vacuum container, a first electrode electrically connected to the first balanced terminal, a second electrode electrically connected to the second balanced terminal, and a ground electrode arranged in the vacuum container and grounded.
    Type: Application
    Filed: December 19, 2019
    Publication date: April 23, 2020
    Applicant: Canon Anelva Corporation
    Inventors: Atsushi TAKEDA, Takayuki MORIWAKI, Tadashi INOUE, Masaharu TANABE, Kazunari SEKIYA, Hiroshi SASAMOTO, Tatsunori SATO, Nobuaki TSUCHIYA