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.

Date of Patent:
May. 10, 2016

Filed:

Jan. 21, 2014
Applicants:

Nikolas M. Ivancevich, Seattle, WA (US);

Xiaozheng Zeng, Sammamish, WA (US);

Liexiang Fan, Sammamish, WA (US);

Inventors:

Nikolas M. Ivancevich, Seattle, WA (US);

Xiaozheng Zeng, Sammamish, WA (US);

Liexiang Fan, Sammamish, WA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 6/00 (2006.01); A61B 8/08 (2006.01); A61B 8/00 (2006.01); G01S 7/52 (2006.01);
U.S. Cl.
CPC ...
A61B 8/485 (2013.01); A61B 8/08 (2013.01); A61B 8/4466 (2013.01); A61B 8/4483 (2013.01); A61B 8/461 (2013.01); A61B 8/5207 (2013.01); G01S 7/52042 (2013.01);
Abstract

Acoustic radiation force impulse (ARFI) scanning uses a swept focus in transmit. Using a changing delay or phase profile across the array during the generation of the ARFI pulse, a time varying focus is provided for the ARFI beam. This time varying focus may be used to extend the focus in depth, azimuth, and/or elevation. Less repetition may be needed to measure tissue characteristics from displacements due to the multi or continuous change in foci within a given ARFI transmit beam.


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