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Table 2 FET-uptake at time of relapse in relation to PTV-1 and PTV-2

From: Relapse patterns after radiochemotherapy of glioblastoma with FET PET-guided boost irradiation and simulation to optimize radiation target volume

Pat. No FET Tumor volume at relapse PTV-1 (72 Gy) PTV-2 (60 Gy)
  FET-2 (ml) Part of FET-2 in PTV-1 (ml) Fraction of FET-2 in PTV-1 (%) Fraction of FET-2 in PTV-2 (%)
1 3.7 1.2 11.5 100
2 10.9 1.1 15.9 100
3 11.3 3.8 55.9 100
4 12.2 5.1 38.9 100
5 13.9 4.9 36.6 100
6 35.1 13.7 91.3 100
7 6.2 1.6 23.9 100
8 22.1 9.5 37.7 100
9 5.6 0.6 12.8 100
10 56.0 2.8 41.2 100
11 46.7 29.4 46.7 100
12 66.8 29.0 49.2 100
13 12.8 4.4 48.4 100
Mean 23.3 8.2 39.2 100
Median 12.8 4.4 38.9 100
SD 20.9 10.0 21.4  
Range 3.7–66.8 0.6–29.4 11.5–91.3  
  1. FET-2: pathological FET-Volume in ml at the time of relapse