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.
Time–signal intensity curve and the definitions of the two parameters, peak time and washout ratio. The horizontal and vertical lines represent the time after contrast material injection and tumour signal intensity, respectively. SI5min, signal intensity at 5 min; SImax, maximum signal intensity; SIpre, signal intensity at 0 min.
