公开(公告)号：US20200214659A1

公开(公告)日：2020-07-09

申请号：US16813134

申请日：2020-03-09

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Takuya Sakaguchi ,  Kenji Hirohata

IPC: A61B6/00 ,  A61B6/03 ,  G06T7/00

Abstract: A medical-information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires medical image data that is obtained during imaging on the subject in a resting state in the time phase where the relationship between the volume of blood flow and the pressure in a blood vessel in the cardiac cycle of the subject indicates a proportional relationship. The processing circuitry extracts the structure of a blood vessel, included in the medical image data, applies fluid analysis to the structure of the blood vessel to obtain a first index value, which is obtained based on the pressure in the blood vessel on the upstream side of a predetermined position within the blood vessel and the relation equation between the volume of blood flow and the pressure in the blood vessel in the resting state, and a second index value, which is obtained based on the pressure in the blood vessel on the downstream side of the predetermined position and the relation equation, and calculates the pressure ratio, which is the ratio of the first index value to the second index value.

公开(公告)号：US10456095B2

公开(公告)日：2019-10-29

申请号：US16026920

申请日：2018-07-03

Applicant: Canon Medical Systems Corporation

Inventor： Takuya Sakaguchi ,  Kyojiro Nambu ,  Hisato Takemoto

IPC: G06K9/00 ,  A61B6/12 ,  A61B6/00 ,  G06T7/246 ,  G06T7/00 ,  G06T7/11 ,  A61B5/0402

Abstract: A marker-coordinate detecting unit detects coordinates of a stent marker on a new image when the new image is stored in an image-data storage unit; and then a correction-image creating unit creates a correction image from the new image through, for example, image transformation processing, so as to match up the detected coordinates with reference coordinates that are coordinates of the stent marker already detected by the marker-coordinate detecting unit in a first frame. An image post-processing unit then creates an image for display by performing post-processing on the correction image created by the correction-image creating unit, the post-processing including high-frequency noise reduction filtering-processing, low-frequency component removal filtering-processing, and logarithmic-image creating processing; and then a system control unit performs control of displaying a moving image of an enlarged image of a set region that is set in the image for display, together with an original image.

公开(公告)号：US11364002B2

公开(公告)日：2022-06-21

申请号：US17115252

申请日：2020-12-08

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Satoshi Wakai ,  Takuya Sakaguchi ,  Akihito Takahashi

IPC: A61B6/00

Abstract: A medical-image processing apparatus and a medical-image diagnostic apparatus according to an embodiment include an acquisition unit, a generation unit, an identification unit, and a display control unit. The acquisition unit acquires a medical image containing a blood vessel collected by the medical-image diagnostic apparatus. The generation unit generates an anatomical structure model based on the medical image acquired by the acquisition unit. The identification unit identifies a position, on the medical image, of an index relating to blood flow analyzed through fluid analysis using the anatomical structure model. The display control unit displays the position of the index on the medical image, and also displays the index associated with the position of the index on the medical image.

公开(公告)号：US11006917B2

公开(公告)日：2021-05-18

申请号：US16813134

申请日：2020-03-09

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Takuya Sakaguchi ,  Kenji Hirohata

IPC: A61B6/00 ,  A61B6/03 ,  G06T11/20 ,  G06T7/00 ,  G16H50/30

Abstract: A medical-information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires medical image data that is obtained during imaging on the subject in a resting state in the time phase where the relationship between the volume of blood flow and the pressure in a blood vessel in the cardiac cycle of the subject indicates a proportional relationship. The processing circuitry extracts the structure of a blood vessel, included in the medical image data, applies fluid analysis to the structure of the blood vessel to obtain a first index value, which is obtained based on the pressure in the blood vessel on the upstream side of a predetermined position within the blood vessel and the relation equation between the volume of blood flow and the pressure in the blood vessel in the resting state, and a second index value, which is obtained based on the pressure in the blood vessel on the downstream side of the predetermined position and the relation equation, and calculates the pressure ratio, which is the ratio of the first index value to the second index value.

公开(公告)号：US10779786B2

公开(公告)日：2020-09-22

申请号：US15724455

申请日：2017-10-04

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Takuya Sakaguchi ,  Takahiko Nishioka ,  Kazumasa Arakita

IPC: A61B6/00 ,  A61B5/02 ,  A61B8/06 ,  A61B8/08 ,  G06T7/00 ,  G16B5/00 ,  A61B6/03 ,  A61B34/10 ,  G06T11/00 ,  A61B5/00 ,  A61B5/026 ,  G16H50/50 ,  A61B5/029 ,  A61B5/107 ,  G06F19/00 ,  A61B6/12 ,  A61B8/00

Abstract: A medical information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry obtains image data rendering a blood vessel of patient. The processing circuitry performs a fluid analysis on the obtained image data and calculates an index value related to a blood flow in the blood vessel with respect to each of a plurality of positions in the blood vessel. With respect to the index values to be calculated, the processing circuitry selects a position in which a first value is to be obtained from among the plurality of positions or selects a value serving as the first value from among the index values exhibited in positions. The processing circuitry causes a display to display the first value in a predetermined display region thereof used for displaying the first value.

公开(公告)号：US12138095B2

公开(公告)日：2024-11-12

申请号：US17970292

申请日：2022-10-20

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Takuya Sakaguchi ,  Takahiko Nishioka ,  Kazumasa Arakita

IPC: A61B34/10 ,  A61B5/00 ,  A61B5/02 ,  A61B5/026 ,  A61B5/029 ,  A61B5/107 ,  A61B6/00 ,  A61B6/03 ,  A61B6/50 ,  A61B8/06 ,  A61B8/08 ,  G06T7/00 ,  G06T11/00 ,  G16B5/00 ,  G16H30/20 ,  G16H50/50 ,  A61B6/12 ,  A61B6/46 ,  A61B8/00

Abstract: A medical information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry obtains image data rendering a blood vessel of a patient. The processing circuitry performs a fluid analysis on the obtained image data and calculates an index value related to a blood flow in the blood vessel with respect to each of a plurality of positions in the blood vessel. With respect to the index values to be calculated, the processing circuitry selects a position in which a first value is to be obtained from among the plurality of positions or selects a value serving as the first value from among the index values exhibited in positions. The processing circuitry causes a display to display the first value in a predetermined display region thereof used for displaying the first value.

公开(公告)号：US12121385B2

公开(公告)日：2024-10-22

申请号：US17525279

申请日：2021-11-12

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Takuya Sakaguchi

IPC: A61B6/50 ,  A61B6/00 ,  A61B6/03 ,  A61B6/40 ,  H05G1/26

CPC classification number: A61B6/504 ,  A61B6/5217 ,  A61B6/5229 ,  A61B6/032 ,  A61B6/4007 ,  A61B6/4064 ,  G06T2207/10076 ,  G06T2207/30104 ,  H05G1/265

Abstract: A medical image-processing apparatus according to embodiments includes processing circuitry. The processing circuitry is configured to acquire image data including a blood vessel of a subject. The processing circuitry is configured to acquire an index value relating to blood flow at each position of the blood vessel by performing fluid analysis of a structure of the blood vessel included in the acquired image data. The processing circuitry is configured to acquire information indicating a display condition of the index value, as switching information to switch a display mode at displaying the index value. The processing circuitry is configured to generate a result image in which pixel values reflecting the index value are assigned in a display mode according to the switching information, for an image indicating a blood vessel of the subject. The processing circuitry is configured to cause a display to display the result image.

公开(公告)号：US11801020B2

公开(公告)日：2023-10-31

申请号：US17092848

申请日：2020-11-09

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Fumimasa Shige ,  Takuya Sakaguchi

IPC: A61B6/12 ,  A61B6/00 ,  G06V10/141 ,  G06V10/20 ,  G06V20/52 ,  G06V10/24

CPC classification number: A61B6/12 ,  A61B6/463 ,  A61B6/5229 ,  A61B6/542 ,  G06V10/141 ,  G06V10/255 ,  G06V20/52 ,  A61B6/4441 ,  A61B6/5264 ,  G06V10/245 ,  G06V2201/034

Abstract: An X-ray diagnostic apparatus according to an embodiment includes an X-ray tube, an X-ray detector, image generating circuitry, and processing circuitry. The X-ray tube generates an X-ray. The X-ray detector is positioned in a manner facing the X-ray tube, and detects the X-ray. The image generating circuitry generates an X-ray image one after another, based on an output of the X-ray detector. The processing circuitry identifies an inserted object inside a subject in the X-ray image, by performing an image recognition process to the X-ray image. The processing circuitry sets the area to be searched for a marker, based on the inserted object identified in the X-ray image. The processing circuitry detects the marker in the X-ray image, by searching the area to be searched for the marker.

公开(公告)号：US11523788B2

公开(公告)日：2022-12-13

申请号：US16238545

申请日：2019-01-03

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Takahiko Nishioka ,  Takuya Sakaguchi

IPC: A61B6/00 ,  A61B6/03 ,  G06T7/00

Abstract: A medical information processing apparatus includes processing circuitry. The processing circuitry is configured to acquire medical image data representing a blood vessel of a subject, extract a blood vessel shape from the medical image data, determine degree of meandering in each of regions from the extracted blood vessel shape, specify a deformed region in which the degree of meandering changes due to insertion of a device into the blood vessel on the basis of the degree of meandering, and output the deformed region in the blood vessel.

公开(公告)号：US11504082B2

公开(公告)日：2022-11-22

申请号：US16996487

申请日：2020-08-18

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Takuya Sakaguchi ,  Takahiko Nishioka ,  Kazumasa Arakita

IPC: A61B6/00 ,  A61B34/10 ,  G16H50/50 ,  G16H30/20 ,  G16B5/00 ,  A61B5/02 ,  A61B5/026 ,  A61B5/029 ,  G06T7/00 ,  A61B6/03 ,  A61B5/00 ,  A61B5/107 ,  A61B8/06 ,  G06T11/00 ,  A61B8/08 ,  A61B6/12 ,  A61B8/00

Abstract: A medical information processing apparatus according to an embodiment includes processing circuitry. The processing circuitry obtains image data rendering a blood vessel of a patient. The processing circuitry performs a fluid analysis on the obtained image data and calculates an index value related to a blood flow in the blood vessel with respect to each of a plurality of positions in the blood vessel. With respect to the index values to be calculated, the processing circuitry selects a position in which a first value is to be obtained from among the plurality of positions or selects a value serving as the first value from among the index values exhibited in positions. The processing circuitry causes a display to display the first value in a predetermined display region thereof used for displaying the first value.