Brain SBRT: end-to-end accuracy at CZE
•
What is the total current accuracy?
•
Is the current margin appropriate?
GTV = 5 cm
3
PTV
1
= GTV + 3 mm=11.5 cm
3
PTV
2
=GTV + 2 mm=9.2 cm
3
With 1 mm smaller margin
20% reduction in
irradiated brain volume
Blonigen IJROBP 77(4) 2010 p996
378 / 1224
