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Table 5 Planned dose of PRV-coronary artery in 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) 19.4±10.9A 15.5±10.2A 8.9±5.2B 9.9±4.7B 11.0±4.6B
V5 (%) 63.9±26.9A 56.8±26.8Aa 46.2±21.9B 66.2±28.2A 82.0±23.3Ab
V10 (%) 52.0±28.3A 42.4±24.6Ba 25.6±17.8Bb 28.6±18.3Bb 35.2±20.7B
V20 (%) 40.9±27.1A 31.2±26.6A 12.4±14.6B 11.9±14.5B 12.9±14.3B
V30 (%) 32.2±25.5A 23.5±25.0A 6.4±10.6B 5.5±9.9B 4.5±8.7B
V40 (%) 22.3±33.0A 14.3±19.9A 2.6±5.9B 1.3±4.0B 1.5±6.2B
  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).