What is target volume delineation?

Target volume delineation is the process of accurately defining the areas that need to be treated in radiation therapy for cancer patients. This involves identifying the tumor and any surrounding tissues that may be at risk for cancer spread, ensuring that the radiation is delivered precisely to maximize treatment effectiveness while minimizing exposure to healthy tissues. It is a critical step in treatment planning and is guided by medical imaging and clinical protocols. Accurate delineation helps improve treatment outcomes and reduce side effects.