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:
Jun. 01, 2021
Filed:
Aug. 18, 2016
Applicant:
Koninklijke Philips N.v., Eindhoven, NL;
Inventor:
David Wesley Clark, Eindhoven, NL;
Assignee:
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 8/06 (2006.01); A61B 8/00 (2006.01); A61B 8/08 (2006.01); G01S 15/89 (2006.01); G01S 7/52 (2006.01);
U.S. Cl.
CPC ...
A61B 8/06 (2013.01); A61B 8/463 (2013.01); A61B 8/488 (2013.01); G01S 7/5208 (2013.01); G01S 15/8915 (2013.01); G01S 15/8979 (2013.01);
Abstract
A spectral Doppler processor for an ultrasound system produces blood flow velocity estimates by processing a sequence of complex blood flow echo samples with an FFT algorithm. The FFT algorithm is executed with a long window of samples to produce velocity estimates with good velocity precision and is executed with a short window of samples to produce velocity estimates with good time precision. The long window algorithm is used when blood flow velocity is not changing rapidly, and the short window algorithm is used when blood flow velocity is changing rapidly.