Lesson: Tumor Treatment Volumes
Below are the definitions of the Volumes per the ICRU 50 & 62.
GTV
GTV (Gross Tumor Volume) – The GTV is “the gross demonstrable extent and location of malignant growth.” As such, the GTV may contain some nearby areas of lymphadenopathy and metastasis.

 |
Page 2 of 12 |
 |