1510-1511 / 2239
(
)
(
)
0
; , ,
; , ,
D A x y z D A x y z
Ψ
=
⋅
Dose per MU formalisms:
model-based dose calculations
0
M
M
Ψ
relates the MU to the direct energy
fluence, commonly determined
under
ref
erence
cal
ibration
conditions
Energy fluence of
direct photons
at isocentre in air
D
Dose engine calibration factor
(
)
(
)
ref
ref
ref
ref
0
meas
ref
ref
ref
ref
0 calc
;
,
,
;
,
,
D A x y z M
M D A x y z
Ψ
Ψ
=
ref,meas
M
ref,calc
0
D
Ψ
=