Table 2.
Noise levels (coefficients of variation) measured in inner and outer ROIs of the SW phantom.
| Inner (%) | Outer (%) | |
|---|---|---|
| Cu1 | 5.1 | 8.3 |
| Cu2 | 5.0 | 14.5 |
| Al1 | 4.9 | 6.1 |
| Al3 | 5.3 | 9.8 |
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.