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Optimization volumes e.g :
oc PTV45
oc PTV45 = PTV45 cropped with 1cm to PTV-N(#)
Purpose:
To reduce Dmax in
areas away from boost.
Dmax < 107% of 45Gy
oc PTV45 mean: 45.1Gy to 45.5Gy
oc PTV45
P
TV
-
N(#)
Courtesy :
Marianne S Assenholt