Table 2 Target volume sizes and treatment planning parameters.
From: Evaluation of particle radiotherapy for the re-irradiation of recurrent intracranial meningioma
median (ml) | Q1-Q3 | mean (ml) | std dev (ml) | |
|---|---|---|---|---|
GTV | 18,1 | 6,7–82,6 | 51,3 | 67,9 |
CTV | 48,9 | 22,5–93,9 | 82,3 | 96,3 |
PTV | 75,1 | 37,1–126,2 | 102,9 | 93,6 |
n= | % | |||
Cases with GTV = CTV | 29 | 69,0% | ||
Cases with additional CTV margin | 13 | 31,0% | ||
median | Q1-Q3 | |||
median absolute increase by CTV | 22,7 ml | 9,3 ml - 43,1 ml | ||
Median relative increase by CTV | 76,4% | 35% - 269,5% | ||