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Table 2 The PTV dose parameters of five plans x ¯ ± d

From: A comparative dosimetric study for treating left-sided breast cancer for small breast size using five different radiotherapy techniques: conventional tangential field, filed-in-filed, Tangential-IMRT, Multi-beam IMRT and VMAT

Parameters TW FIF T-IMRT 7-IMRT VMAT
D98(Gy) 47.3±0.4 47.0±0.4 47.0±0.6 47.3±0.6 46.4±0.6
D2(Gy) 53.2±0.6 52.0±0.6 52.7±0.6 52.4±0.5 53.4±0.7
D50(Gy) 50.6±0.6 50.7±0.4 50.7±0.4 50.4±0.4 51.0±0.4
V95% 96.2±1.6A 95.6±1.6A 96.8±1.7A 96.1±1.7A 94.7±1.2A
CI 2.0±0.5Aa 1.7±0.4A 1.6±0.3Ab 1.3±0.1Bb 1.4 ±0.2Bb
HI 0.13±0.02A 0.11±0.02B 0.11±0.03B 0.11±0.02B 0.14±0.02A
  1. A had significant difference with B (p<0.05), and, a had significant difference with b (p<0.05). Otherwise the difference was not significant between any two (p>0.05).