317 / 1224
Systematic Errors Only (M
sys
= 2.5
Σ
)
The systematic set-up errors are described by a 3D Gaussian distribution
How to choose M
sys
to ensure a high probability that the prescribed dose is
delivered to the CTV?
Choice:
for 90% of all possible systematic set-up errors (treatments), the full
CTV is within the PTV (=95% isodose)
95%