公开(公告)号：US20240210458A1

公开(公告)日：2024-06-27

申请号：US18435929

申请日：2024-02-07

Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY

Inventor： Kazuma ITO ,  Nobuo NIIMI ,  Kenji IKUSHIMA

IPC: G01R29/08

CPC classification number: G01R29/0892

Abstract: A characteristics measurement device for an object according to the invention comprises a sound wave generator that emits a sound wave; a receiver that receives from the object an electromagnetic field generated by the sound wave being irradiated to the object; a sound wave medium between the sound wave generator and the object the electromagnetic field separated from a reverberating electromagnetic field caused by reverberating vibrations of the sound wave generator in time; an inverse diffuse that inversely diffuses the electromagnetic field received by the receiver using a reference signal associated with the sound wave; and a measurement unit that extracts at least one characteristic selected from a group consisting of electrical characteristics, magnetic characteristics, electromechanical characteristics and magnetomechanical characteristics of the object based on at least one measurement selected from a group consisting of intensity, phase and frequency of the inversely diffused electromagnetic field.

公开(公告)号：US20220287618A1

公开(公告)日：2022-09-15

申请号：US17638580

申请日：2020-07-01

Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY

Inventor： Kenji IKUSHIMA

IPC: A61B5/38 ,  A61B5/05 ,  G01N24/08 ,  G01R33/02

Abstract: A fibrosis measurement device that measures fibrosis of a biological tissue non-invasively includes: a sound wave emitter that performs scanning over a surface of a biological tissue as a measurement object to emit sound waves; an electromagnetic wave receiver that receives an electromagnetic wave generated at each location of a biological tissue irradiated with sound waves; a signal extractor that extracts a signal indicating physical property, based on at least one selected from a group including the amplitude, phase, and frequency of an electromagnetic wave received by the electromagnetic wave receiver; an imaging unit that images signals extracted by the signal extractor; and an area comparison unit that compares the area of a portion of the two-dimensional image in which signals indicating a property are displayed, with an area corresponding to a preset threshold of the strength of the signals.