FIG. 1.
(a) ACR phantom (*) with supplemented bead phantom for resolution measurement. (b) ACR phantom with additional material circumferentially placed. (c) Cross sectional view of the (a) bead phantom and (b) ACR phantom.
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.