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.
First 6 principal components (PCs) with their explained variance ratio determined on the real model-building dataset (20 patients, 3,974,466 TACs). Each component assigns a weight to each of the 906 TAC samples, starting from 10 s to 1820 s with step 2 s.
