TVD 2016

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Target volumes – overlaps

From ICRU 83

Review DVHs carefully

PTV

PRV

Overall more robust method , 

PTV‐PRV

PTV ∩ PRV

PTV ∩ PRV PTV‐PRV

PTV

PTV (PTV PRV)  =  ‐ + (PTV ∩ PRV)

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