ULTRASONIC BIOTISSUE MEASURING APPARATUS AND ULTRASONIC BIOTISSUE MEASURING METHOD

摘要

PROBLEM TO BE SOLVED: To solve the problem that, since biotissue is measured by detecting an echo of an ultrasonic pulse reflected on a boundary surface between a subcutaneous fat tissue and a muscular tissue to return, the biotissue of the subcutaneous fat in the surface layer of an organism can be measured, but the biotissue of visceral fat in a deeper layer of the organism should be obtained by another measuring method and it can not be easily estimated. ;SOLUTION: An ultrasonic wave is radiated from a designated position in the surface of a organism toward the inside of the organism, the ultrasonic wave transmitted through the biotissue in the organism to be emitted from another position in the surface of the organism is detected to obtain the transmission time of the ultrasonic wave and the transmission distance of the transmitted ultrasonic wave, according to the transmission distance and transmission time, the transmission speed of the ultrasonic wave is calculated, and according to the transmission speed, transmission distance and the previously obtained transmission speeds of ultrasonic waves of various biotissues different in acoustic impedance, the thickness of the biotissue in the organism is obtained.;COPYRIGHT: (C)2001,JPO