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Table 3 Summary of dosimetric results for low-dose delivery inside the outer contour on the cohort of 13 patients

From: Fractionated stereotactic radiotherapy of benign skull-base tumors: a dosimetric comparison of volumetric modulated arc therapy with Rapidarc® versus non-coplanar dynamic arcs

Indices

Dynamic arc (DA)

Rapidarc (RA)

p-value

Dmean (Gy)

3.9 ± 1.9

3.7 ± 1.7

DA vs RA p = 0.41

V30 Gy (cm3)

100.5 ± 99.7

92.6 ± 72.9

DA vs RA p = 0.49

V20 Gy (cm3)

166.1 ± 158.8

184.4 ± 127.0

DA vs RA p = 0.14

V10 Gy (cm3)

425.1 ± 328.8

476.4 ± 226.4

DA vs RA p = 0.09

V5 Gy (cm3)

1056.0 ± 569.7

1264.9 ± 1551.6

DA vs RA p = 0.17

  1. Data presented the mean doses of all patients ± standard deviation. Nb Vx% = minimum x% of prescribed dose received by the volume and Dx% is the minimum dose received by x% of the structure volume