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.
MV planar image of QC-3V phantom. Elements 1B (15 mm Al), 1C (15 mm Pb), 1D (7.5 mm Pb; 7.5 mm PVC), 3B (5 mm Pb; 10 mm PVC), 3C (15 mm PVC) and 3D (7.5 mm Pb; 7.5 mm PVC) were used for CNR calculation; 2A (0.20 lp/mm), 2B (0.40 lp/mm), 2C (0.75 lp/mm), 2D (0.25 lp/mm) and 2E (0.10 lp/mm) were used to calculate spatial resolution.
