785 / 1359
(
)
(
)
0
0
; , ,
; , ,
D A x y z D A x y z
M
M
=
relates the MU to the direct energy
fluence, commonly determined
under
ref
erence calibration
conditions
(
)
(
)
ref
ref
ref
ref
0
meas
ref
ref
ref
ref
0 calc
;
,
,
;
,
,
D A x y
z M
M D A x y z
=
Energy fluence of
direct photons
at isocentre in air
ref,meas
D
M
ref,calc
0
D
=
Dose engine calibration factor
Dose per MU formalisms:
model-based dose calculations