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Table 2 Trial dose specification

From: Lungtech, a phase II EORTC trial of SBRT for centrally located lung tumours – a clinical physics perspective

  Ideal solution 8 × 7.5 Gy Reduced prescription to meet OARs constraints 8 × 7 Gy Underdosed PTV to meet OARs constraints 8 × 7.5 Gy
Volume 99 % 95 % 99 % 95 % 99 % 95 %
PTV ≥54 Gy (90 %) ≥60 Gy (100 %) ≥50.4 Gy (90 %) ≥56 Gy (100 %) NA ≥48 Gy (80 %)
CTV NA NA ≥54 Gy (90 %) ≥60 Gy (100 %)
GTV NA NA Acceptable variation
66–78Gy (110–130 %)