1164 / 1542
Basic Dose Calculation Principles
Simplified depth dose formalism
DD(d)
%
=D
max •
(f+d
m
/f+d)
2
•
e
-(
m
•
d)
•
K
s
f
distance from source to surface
d
m
or depth to
D
max
d
is depth in tissue
μ is energy dependent
attenuation coefficient
K
s
is the scatter
attenuation
D
max