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) Simulated time-activities of a reference region (gray) and target region (black) for relatively low-binding regions using (a) BP = 1 and 1/k4 = 15 min. b) The corresponding ratio of bound to total concentration of PET ligand in the target region versus time (black points) is compared to the model estimate for SRTM (red) and FRTM using values of 1/k4 from 5 to 25 minutes.
