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:
Sep. 21, 1993
Filed:
Oct. 24, 1991
Hiroshi Kanda, Tokorozawa, JP;
Shinichiro Umemura, Hachioji, JP;
Hisashi Nishiyama, Tokyo, JP;
Ryuichi Shinomura, Higashimatsuyama, JP;
Kageyoshi Katakura, Tokyo, JP;
Shizuo Ishikawa, Kanagawa, JP;
Koji Tanabe, Kashiwa, JP;
Satoshi Tamano, Kashiwa, JP;
Hitachi Medical Corporation, Tokyo, JP;
Abstract
An ultrasonic flow mapping apparatus transmits and reflects waves from sampling points on a two-dimensional cross-section. The waves are detected while transmitting repeatedly ultrasonic pulses. The phase shifts of different reflected waves are calculated, and displayed in color to show a distribution of blood flow velocity. Artifact due to reflected waves from body organs, which remain even by using MTI filters, is detected from phase signals, which have not passed through the MTI filters, and the artifact is removed by lowering display brightness for a sampling point corresponding to a relevant detection output.