ESTRO Brachytherapy for Prostate Cancer 2018
Clinical Target Volume
CTV
Is a tissue volume that contains the GTV and/or subclinical malignant disease at a certain probability level.
The CTV is a clinical-anatomical concept. Delineation of the CTV is based on the probability of presence of subclinical malignant cells outside the GTV and thus requires the interpretation of data and some judgment of the radiation oncologist.
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