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Table 3 Calculated CTV–PTV margins in 3-dimensions of different characteristics

From: Does the protocol-required uniform margin around the CTV adequately account for setup inaccuracies in whole breast irradiation?

Groups Margins (mm)
LR SI AP
Age > 46 years 3.98 7.13 4.99
Age ≤ 46 years 3.93 6.52 5.03
BMI > 23.8 kg/m2 4.25 7.95 4.93
BMI ≤ 23.8 kg/m2 3.64 4.64 5.09
CC > 89 cm 4.37 7.66 5.24
CC ≤ 89 cm 3.31 4.50 4.82
BV > 657 cm3 4.22 7.54 5.29
BV ≤ 657 cm3 3.29 5.74 4.73
  1. LR left–right direction, SI superior–inferior direction, AP anterior–posterior direction, BMI body mass index, CC chest circumference, BV breast volume
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Radiation Oncology

ISSN: 1748-717X

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