公开(公告)号：US11596374B2

公开(公告)日：2023-03-07

申请号：US17232281

申请日：2021-04-16

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Shumpei Ohashi ,  Junichi Yamagishi ,  Naotaka Sato ,  Jun Sakakibara ,  Yusuke Kanno ,  Toshiya Waku

IPC: A61B6/00

Abstract: An X-ray diagnostic apparatus of an embodiment includes processing circuitry. The processing circuitry determines a concentration of a contrast agent in contrast-enhanced image collection based on first reference information in which a recommended contrast in a contrast-enhanced image is associated with each region of interest to be subject to collection of the contrast-enhanced image, and on second reference information that indicates a relation among a generation condition of an X-ray, a concentration of a contrast agent, and a contrast. The processing circuitry calculates setting information of an injector to inject a contrast agent to the subject based on the determined concentration of a contrast agent.

公开(公告)号：US12064275B2

公开(公告)日：2024-08-20

申请号：US17643480

申请日：2021-12-09

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Shumpei Ohashi ,  Hisato Takemoto

IPC: A61B6/00 ,  A61B6/06 ,  A61B6/42

CPC classification number: A61B6/4441 ,  A61B6/06 ,  A61B6/4208 ,  A61B6/4291 ,  A61B6/5282 ,  A61B6/54

Abstract: An X-ray diagnostic apparatus according to an embodiment includes an X-ray detector, a grid, a slide mechanism, a rotary mechanism, and an arm. The X-ray detector detects X-rays emitted from an X-ray tube. The grid has a fixed relative position to the X-ray detector and is provided with stripes extending in a first direction to remove scattered rays included in the X-rays. The slide mechanism includes at least one slide rail along the first direction and holds the X-ray detector so as to slide in the first direction. The rotary mechanism includes a rotation shaft and rotatably holds the slide mechanism. The arm holds the rotary mechanism and is operable.

公开(公告)号：US11334998B2

公开(公告)日：2022-05-17

申请号：US16853855

申请日：2020-04-21

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Hirona Oikawa ,  Shingo Abe ,  Kunio Shiraishi ,  Toshiya Waku ,  Shumpei Ohashi ,  Akihito Takahashi ,  Saki Hashimoto ,  Jumpei Ogasawara

IPC: G06K9/00 ,  G06T7/00 ,  G06T7/215 ,  G06T7/73 ,  G16H30/20

Abstract: According to one embodiment, a medical image processing apparatus includes processing circuitry. The processing circuitry specifies, before position alignment between a first X-ray image and a second X-ray image which is acquired with a device inserted, a device area candidate in the second X-ray image as a candidate of an area where the device appears. The processing circuitry performs the position alignment using first processing of removing the specified device area candidate or second processing of reducing a contribution of the specified device area candidate.

公开(公告)号：US11298098B2

公开(公告)日：2022-04-12

申请号：US16582090

申请日：2019-09-25

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Shumpei Ohashi

IPC: A61B6/00

Abstract: An X-ray diagnosis apparatus according to an embodiment includes: processing circuitry configured: to sequentially generate X-ray image data based on a detection result obtained by an X-ray detector; to specify a radiation region of X-rays in each piece of X-ray image data generated during the move of an X-ray blocking member that is moved by an X-ray limiting device on the basis of an operation received by an input interface; to sequentially generate, during the move of the X-ray blocking member, first combined image data by using the radiation region, by combining first X-ray image data generated during the move of the X-ray blocking member, with second X-ray image data generated prior to the move of the X-ray blocking member and stored in storage circuitry; and to cause a display to display a combined image represented by the first combined image data.

公开(公告)号：US11179125B2

公开(公告)日：2021-11-23

申请号：US16394591

申请日：2019-04-25

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Shumpei Ohashi ,  Yoshiaki Iijima ,  Kunio Shiraishi

IPC: G06K9/00 ,  A61B6/00 ,  G06T5/50

Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to sequentially obtain X-ray images. The processing circuitry is configured to sequentially generate average images by using the obtained plurality of X-ray images, in parallel to the obtainment of the X-ray images. The processing circuitry is configured to sequentially generate difference images by performing a difference calculating process between the X-ray images and the average images, in parallel to the obtainment of the X-ray images and the generation of the average images.