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.
Scatterplot showing the linear relationship between the lymphocyte decay constant versus the product of the dose per fraction squared and the PTV-to-blood-volume ratio. Interindividual variability in b for the same combinations of dose/fraction2 and PTV:blood volume is observed. Abbreviations: CNS = central nervous system; H+N = head and neck; PTV = planning target volume; RT = radiation therapy; SBRT = stereotactic body radiation therapy.
