144 / 1544
Tomotherapy for moving targets?
Theoretical possibility of
“
interplay effect
”
when using IMRT for treatments with few fractions
= Interplay between tumor motion and leaf opening
Scanning motion of Tomotherapy
Sterpin et al: very small effect on dose (coached
patients)
Good resulting dose distribution when patients
breathe regularly
Safe to keep in to account:
Large field width (2,5-5cm)
Low pitch
Low modulation factor
23