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Table 6 The dose parameters of PRV-coronary artery 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
Dmean(Gy) 0.4±0.4A 0.4±0.4A 0.4±0.3A 1.6±0.7B 1.9±1.0B
V2 (%) 1.7±3.6A 2.2±3.9A 1.5±2.9A 29.4±21.2B 33.1±29.9B
V3 (%) 0.6±1.9A 0.6±2.0A 0.2±0.6A 13.9±15.2B 15.2±22.1B
V4 (%) 0.4±1.5A 0.4±1.6A 0.1±0.3A 5.8±8.1Ba 7.5±13.0Bb
V5 (%) 0.3±1.3A 0.3±1.4A 0.0±0.2A 1.6±3.2A 4.0±7.5B
V10 (%) 0.2±0.9A 0.2±0.9A 0.0±0.0A 0.0±0.0A 0.0±0.0A
  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).