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Table 3 Dose around the PTV

From: Cerebral cortex dose sparing for glioblastoma patients: IMRT versus robust treatment planning

  Average Dose in Gy
PTV + 10 PTV + 20 CortexPTV + 20
IMRT 56.1 ± 0.9 44.9 ± 3.5 41.4 ± 4.9
IMRT with CS 53.5 ± 0.7 41.3 ± 2.8 33.4 ± 3.6
Robust 53.9 ± 1.5 42.1 ± 3.9 37.2 ± 4.9
Robust with CS 51.7 ± 0.9 39.4 ± 3.1 31.3 ± 3.6
  1. Average dose for the patient cohort around the PTV within a distance of 10 mm (PTV + 10) and 20 mm (PTV + 20) as surrogate for the dose gradient in Gy plus minus one standard deviation. For the evaluation of cortex sparing the values of CortexPTV + 20 indicate the average dose to the cortex in a 20 mm distance from the PTV for IMRT and robust plans with and without cortex sparing (CS)