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Table 4 Comparison of the PRV-heart dose parameters 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) 3.7±2.0Ab 3.2±1.9A 2.2±1.0Aa 4.4±1.9Ab 4.6±1.7Ab
V5 (%) 10.2±6.0A 8.9±5.9A 6.3±3.6A 26.2±21.1B 26.1±15.1B
V10 (%) 7.5±5.0Aa 6.1±4.8A 3.5±2.4Ab 6.8±5.4Aa 6.9±4.9Aa
V20 (%) 5.6±4.2A 4.3±4.0A 2.0±1.7Bb 2.1±2.1Bb 2.5±2.4Ba
V30 (%) 4.2±3.5A 3.2±3.3A 1.2±1.3B 1.0±1.3B 1.1±1.5B
V40 (%) 3.0±2.7A 2.0±2.2A 0.6±0.9B 0.3±0.7B 0.4±1.0B
  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).