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:
Jan. 15, 1985
Filed:
Sep. 29, 1982
Dieter Hassler, Uttenreuth, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
Due to a different configuration of the ultrasonic beam as well as different signal gate adjustments, two different doppler signal collection regions (V.sub.m1, V.sub.p) of the flowing medium are selectable. To further develop the state of the art, without excessively increased technical outlay, at least the flow velocity (v) and/or the flow cross-sectional area (F) are to be measured, preferably simultaneously with the volume flow (Q), independently of the irradiation angle of the ultrasound into the flowing medium. This is achieved through selection of a third doppler signal collection region (V.sub.m2), power measurements (P.sub.m1, P.sub.p, P.sub.m2) from all three regions (V.sub.m1, V.sub.p, V.sub.m2) and the calculation from the powers together with additional known parameters of the signal collection regions such that, with cancellation of the angle-dependency, the respectively desired flow quantity (F, v, Q) directly results. A preferred implementation is for the purpose of diagnosis of blood flow.