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GTV delineation:
PET vs CT & pathology
Yu V. et al – Radiother Oncol. – 2009
lenght
Overlapping
measurements
Delineation modalities:
1. CT:
manual
2. SUV bcg + 20% (SUV max – SUV bcg)
3. SUV bcg + 40% (SUV max – SUV bcg)
4. SUV 2.5;
5. 40% SUV max
Pathology
PET-CT
delineation
GTV
volume
automatic