PET for radiation treatment planning of brain tumours

AA-PET (MET-PET and FET-PET) can be used for gross tumour volume (GTV) delineation in brain gliomas and for the differentiation between treatment-related changes (pseudo-progression, pseudo-regression) and residual/recurrent tumour. There are some data showing that MET-PET and (DOTATOC)-PET can be used for GTV delineation in meningiomas and glomus tumours. The role of PET in the visualization of the biological characteristics of the tumours: proliferation (FLT-PET), hypoxia (FMISO-PET) and angiogenesis/peptide expression (RGD-PET) should be investigated in future studies. (C) 2010 European Society for Therapeutic Radiology and Oncology and European Association of Nuclear Medicine. Published by Elsevier Ireland Ltd. All rights reserved. 96 (2010) 325-327