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:
Nov. 09, 2021
Filed:
Mar. 28, 2017
Applicant:
Siemens Medical Solutions Usa, Inc., Malvern, PA (US);
Inventors:
Yassin Labyed, Maple Valley, WA (US);
Kutay F. Ustuner, Mountain View, CA (US);
Assignee:
Siemens Medical Solutions USA, Inc., Malvern, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
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 8/5215 (2013.01); G01S 7/52022 (2013.01); G01S 7/52036 (2013.01); G01S 7/52042 (2013.01); G01S 7/52071 (2013.01); G01S 15/8915 (2013.01); G01S 15/8927 (2013.01); G01S 15/8952 (2013.01); A61B 8/4483 (2013.01); A61B 8/461 (2013.01); G01S 7/52095 (2013.01);
Abstract
For estimating attenuation, diffraction effects are corrected by transmitting at different frequencies using apertures sized to match the on-axis intensity profile and/or resolution cell size between the transmissions where there is no attenuation. Attenuation causes a variance in return. A rate of change is estimated from a ratio of the magnitude of the signals or displacements responsive to the transmissions. The attenuation is calculated from the rate of change over depth of the ratio.