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Table 4 Results of the dose distribution for the PTV and OARs of case 1

From: Comparison of intensity modulated radiotherapy (IMRT) with intensity modulated particle therapy (IMPT) using fixed beams or an ion gantry for the treatment of patients with skull base meningiomas

Organ

Parameter

photon IMRT (%)

carbon ion (%)

proton (%)

PTV

V90

99.9

100.0

99.6

Right lens

V10

4.8

22.0

32.8

Right optic nerve

V60

100.0

73.2

83.1

Brainstem

V40

19.9

0

0

Left eye

V40

46.6

18.4

22.3

  1. Vx (corresponding to the fractional volume irradiated to a percentage dose higher than x%)
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Radiation Oncology

ISSN: 1748-717X

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