Microsoft Word - Scientific Program IGRT 2016 Madrid V3

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Prostate vol : 50 cm

3

PTV = 1cm

"

PTV vol = 90 cm

3

A

5mm

margin =

Volume X 35%

Why each mm counts in large amount?

PTV = 0.5cm

"

PTV vol = 68 cm

3

PTV = 0.1cm

"

PTV vol = 53 cm

3

10 m

margin

80