607 / 1311
PTV
GTV
CTV
Adaptive radiation therapy
“Adaptive radiotherapy is a close-loop radiation treatment
process where the treatment plan can be modified using
a systematic feedback of measurements.”
(Yan et al, 1997)
Measurements:
• Tumor & OAR anatomy (position, shape & volume):
• Intra-fraction
• Inter-fraction.
• Tumor & OAR biology (multiparameter biologic image-defined).
• Treatment dose.
Yan
et al.
Phys Med Biol
1997;42:123-32.
Do we need adaptive radiotherapy?