Fig. 2.

Proportion of tumours suitable for BgRT (nSUV ≥ nSUV threshold and BTZ free of PET uptake) for each %SUVmax threshold considered by using a margin expansion of 5 mm/10 mm/20 mm. Results are shown for nSUV threshold of (a) 2.7, (b) 3, and (c) 3.3.