465 / 1173
Suppose the formulæ are used to correct
the 100% isodose. At any other point in
the treatment plan, the dose delivered is
a fraction
f
of the 100% isodose. Do the
formulæ still hold?
At any other point, the doses now are:
P
lanned:
f
p
Gy per fraction to
f
P
Gy
E
rror:
f
e
Gy per fraction to
f
E
Gy
Correct
d
ion:
f
d
Gy per fraction to
f
D
Gy
After thoughts 3