公开(公告)号：US20210127984A1

公开(公告)日：2021-05-06

申请号：US17051237

申请日：2019-06-12

Applicant: Hitachi High-Tech Corporation

Inventor： Takeshi TANAKA ,  Sayaka KURATA ,  Takashi TOYOMURA

IPC: A61B5/0205 ,  A61B5/026 ,  A61B5/11

Abstract: The present invention aims to provide a blood flow analysis device capable of accurately identifying a change in the blood flow in a muscle caused by resistance exercise performed by a subject. A blood flow analysis device according to the present invention specifies a resistance exercise period during which a muscle of a subject present at a position to be measured by a motion sensor is performing a resistance exercise, and analyzes a light detection signal in the resistance exercise period, to thereby calculate a feature amount of a change in the blood flow in the muscle of the subject in the resistance exercise period (see FIG. 1).

公开(公告)号：US20230316721A1

公开(公告)日：2023-10-05

申请号：US18018923

申请日：2021-05-12

Applicant: Hitachi High-Tech Corporation

Inventor： Sayaka KURATA ,  Ryuichirou TAMOCHI

IPC: G06V10/77 ,  G06V10/62 ,  G06V10/772 ,  G06V10/60

CPC classification number: G06V10/7715 ,  G06V10/62 ,  G06V10/772 ,  G06V10/60

Abstract: Provided is a microstructure evaluation system capable of detecting, based on an image of a sample, a fluctuation caused by an imaging device. A microstructure evaluation device 10 includes: a feature data extraction unit 13 configured to extract first feature data from an image captured by an imaging device 1 while changing an observation field of view on a sample 4; and a fluctuation evaluation unit 14 configured to calculate a long-term fluctuation of the first feature data, return an observation field of view to a position before occurrence of the long-term fluctuation and re-capture to acquire a re-captured image when the long-term fluctuation exceeds a predetermined criterion, and calculate a difference between the first feature data of the captured image at the position before the occurrence of the long-term fluctuation and the first feature data of the re-captured image. The fluctuation evaluation unit determines that the long-term fluctuation is a fluctuation caused by the sample when the difference is less than a predetermined threshold, and determines that the long-term fluctuation is a fluctuation caused by the imaging device when the difference is equal to or greater than the predetermined threshold.