You are viewing the site in preview mode

Skip to main content

Advertisement

Table 3 Dose–volume analysis for planning target volume and organs at risk

From: Phase I study of hypofractionated intensity modulated radiation therapy with concurrent and adjuvant temozolomide in patients with glioblastoma multiforme

Volume Parameter Mean ± SD
PTV Mean dose 60.8 ± 2.7 Gy
  Minimum dose 43.6 ± 9.4 Gy
  Maximum dose 65.6 ± 4.2 Gy
  V95% 97.9± 2.5%
  Homogeneity index (D5/D95) 1.1 ± 0 (Range 1.0 - 1.2)
Optic chiasm Mean dose 30.4 ± 7.2 Gy
  Maximum dose 40.5 ± 7.6 Gy
  V40 13.9 ± 15.9%
  V45 0.8% ± 1.9%
  V47.25 0%
  V50 0%
Left optic nerve Mean dose 18.3 ± 8.0 Gy
  Maximum dose 29.5 ± 11.1 Gy
  V40 3.6 ± 9.1%
  V47.25 0.1 ± 0.3%
  V50 0
Right optic nerve Mean dose 23.4 ± 10.3 Gy
  Maximum dose 34.6 ± 11.5 Gy
  V40 13.6 ± 21.8%
  V47.25 0%
  V50 0%
Brainstem Mean dose 22.8 ± 10.2 Gy
  Maximum dose 50.7 ± 10.3 Gy
  V40 19.8 ± 19%
  V50 4.5 ± 7.4%
  V52.5 1.3 ± 3%
  V55 0.4 ± 1%
Spinal cord Mean dose 1.2 ± 0.8 Gy
  Maximum dose 3.1 ± 2.4 Gy
  V40 0%
  V42 0%
Left eye Mean dose 5.2 ± 2.8 Gy
  Maximum dose 11.1 ± 4.1 Gy
  V10.5 5 ± 17.7%
Right eye Mean dose 5.7 ± 3.7 Gy
  Maximum dose 13.3 ± 6.4 Gy
  V10.5 5.6 ± 17%