Advanced Physics for Brachytherapy 2018
TG-43 2D Formalism
G r
( , ) q
g r F r
( ) ( , ) q
D r
S =
( , ) q
K
L
G r
0 0 ( , ) q
dose rate to water at point P(r, q)
( , ) D r q
S
air kerma strength
K
dose rate constant
( r , q )
geometry function ( line-source approximation )
G
L
g
( r )
radial dose function
L
F ( r , q )
2D anisotropy function
Rivard, et al., Med. Phys. 31, 633-674 (2004)
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