公开(公告)号：US11747424B2

公开(公告)日：2023-09-05

申请号：US17684601

申请日：2022-03-02

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Kenzo Isogawa ,  Toshiyuki Ono ,  Kenichi Shimoyama ,  Nobuyuki Matsumoto ,  Shuhei Nitta ,  Satoshi Kawata ,  Toshimitsu Kaneko ,  Mai Murashima

IPC: G01R33/565 ,  G01R33/56

CPC classification number: G01R33/565 ,  G01R33/5608 ,  G01R33/56545

Abstract: A magnetic resonance imaging apparatus according to an embodiment includes an MRI system and a processing circuitry. The MRI system includes a receiving coil to receive a magnetic resonance signal. The processing circuitry is configured to generate an image based on the magnetic resonance signal, the image including a plurality of pixels; calculate a feature value corresponding to a signal value of the pixel; correct the feature values based on a sensitivity of the receiving coil; and reduce noise in the image based on distribution of the corrected feature values.

公开(公告)号：US11138735B2

公开(公告)日：2021-10-05

申请号：US16162986

申请日：2018-10-17

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Misaki Haratake ,  Toshimitsu Kaneko ,  Atsushi Yaguchi ,  Tatsuya Kimoto ,  Shinsuke Tsukagoshi

IPC: G06T7/00 ,  A61B6/00 ,  A61B6/03 ,  G06T11/00 ,  G06T7/11 ,  G06T7/246 ,  G06K9/00

Abstract: An image processing apparatus includes processing circuitry configured: to obtain a plurality of images taken so as to include a target site of a subject in temporal phases; and to calculate an index indicating a state of an adhesion at a boundary between a first site of the subject corresponding to a first region and a second site of the subject corresponding to a second region, by using classification information used for classifying each of pixels into one selected from between a first class related to the first region and a second class related to a second region positioned adjacent to the first region in a predetermined direction, on a basis of mobility information among the images in the temporal phases with respect to the pixels in the images that are arranged in the predetermined direction across the boundary between the first region and the second region of the images.

公开(公告)号：US10803388B2

公开(公告)日：2020-10-13

申请号：US15688316

申请日：2017-08-28

Applicant: Canon Medical Systems Corporation

Inventor： Tomoya Okazaki ,  Marco Visentini Scarzanella ,  Toshimitsu Kaneko ,  Yasunori Taguchi ,  Wataru Watanabe

IPC: G06N3/08 ,  G06N3/04 ,  G06K9/00 ,  G06T7/00

Abstract: According to an embodiment, a network training device includes a first training unit that trains a first network that converts an input signal to a first signal, a second training unit that trains a second network that converts the first signal to a second signal, and a third training unit that trains a third network that converts the second signal to an output signal. The first training unit trains the first network as an encoder of a first autoencoder. The second training unit trains the second network by backpropagation by using a second signal for training corresponding to the first signal for training as supervised data. The second signal for training is generated by an encoder of a second autoencoder that encodes a third signal for training into the second signal for training, and decodes the second signal for training into the third signal for training.