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.
GTV-t is in red line; 3 margin beyond GTV-t longitudinally is in blue line; PGTV is in sky-blue line; CTV is in orange line; PTV is in forest-green line. This 65-year-old male patient’s pathological type consisted squamous cell carcinoma. CTV, clinical target volume; GTV, gross tumour volume; PGTV, planning gross target volume; PTV, planning target volume. The order of pictures was from A to L.
