195 / 1542
95%
ICRU-50
planned dose
blurred dose
CTV
2.5Σ
1.64√(σ
2
+σ
p
2
)-1.64σ
p
Add random errors
M
PTV
= 2.5Σ + 0.7σ
Gauss(√(σ
p
2
+ σ
2
))
Fluence
Gauss(σ
p
)
Fluence
Water: σ
p
3.2 mm
PTV
|
|
195 / 1542
95%
ICRU-50
planned dose
blurred dose
CTV
2.5Σ
1.64√(σ
2
+σ
p
2
)-1.64σ
p
Add random errors
M
PTV
= 2.5Σ + 0.7σ
Gauss(√(σ
p
2
+ σ
2
))
Fluence
Gauss(σ
p
)
Fluence
Water: σ
p
3.2 mm
PTV