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Relationships between quantities
TPR from data measured isocentrically
(
)
cm
SAD
100
=
z
cm SSD
90
=
cm z
ref
10
=
SAD SDD
≠
A
B
z SDD A AD
;
,
,
p
SAD
c
SAD
cm
z cm
100
90
ref
= +
(
)
(
)
(
)
cm cm A AD
zz cm A AD
D
D
z A
PDD
10;
100 ,
,
;
90,
,
;
p
SAD
c
SAD A
p
SAD
c
SAD B
A
B
p
10,90
SAD
+
= =
(
)
ref
ref
p
ref
SAD,
c
ref
SAD,
ref
A
;
90,
,
z z cm
A AD D
+
=
(
)
c
SAD
iso
c
A S
(
)
p
SAD
iso
p
A S
(
)
EqSq
SAD
p
SAD
A A where
=