Physics Bucharest 2017

Functional imaging to assist volume definition

Considering FDG-PET

Advantages -Accuracy in disease delineation • PET-CT can more closely reflect pathological staging • Improve inter-observer concordance • Tumour • Involved lymph node delineation • Certainty results in smaller treatment volumes • Less normal tissue irradiation • Commonly used for radical radiotherapy planning • difficulties in distinguishing tumour, • necrosis, • atelectasis • normal tissue boundaries