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.
Isodose distribution differences for 90%, 80% and 70% isodose surface (IDS)-based plans for the same target (9.0 cm3). (a) From the outer line, 25%, 50%, 100% and 110% isodose line (IDLs), normalised to 100% at “the prescription dose”, shown in the 90% IDS plans. (b) 25%, 50%, 100%, 110% and 120% IDLs depicted in the 80% IDS plans. (c) 25%, 50%, 100%, 110%, 120% and 130% IDLs (e.g. 2.5, 5, 10, 11, 12 and 13 Gy at 100%=10 Gy) demonstrated in the 70% IDS plans.
