The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 1989
Filed:
Feb. 06, 1986
Satoshi Tamano, Kashiwa, JP;
Yukio Ito, Kashiwa, JP;
Shinji Kishimoto, Kashiwa, JP;
Yutaka Sato, Kashiwa, JP;
Hitachi Medical Corp., Tokyo, JP;
Abstract
An ultrasonic diagnosis apparatus comprises a probe means for transmitting an ultrasonic pulse beam toward an internal moving part of a living body and receiving the reflected wave therefrom, and a plurality of phasing circuits for simultaneously receiving and phasing the received signal in parallel in a plurality of channels. The received signals of plural channels are mixed with a set of complex reference signals having a complex relation therebetween, thereby converting the received signals into complex signals. A multiple-channel multiple-cancel complex signal canceller with feedback removes reflected signal components from a low-speed moving part and/or a stationary part of the living body. Speed and speed dispersion operating circuits compute the moving speed of the moving part on the basis of the complex signals and the dispersion thereof, respectively. The results of computation are subjected to image processing.