An official website of the United States government
Here's how you know
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
. (a) Reconstruction geometry. R, radius of the arc-shaped US array transducer; , ith transducer element’s angle. (b) Pipeline of the custom-developed graphics processing unit (GPU) software. TR, transducer.