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Table 3 Dose comparison of the PRV-left lung between the 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) 8.6±2.6A 8.2±2.4A 6.8±2.0Ba 9.3±3.8A 10.1±2.5Bb
V5 (%) 25.9±6.6A 24.6±6.1A 23.4±5.6A 49.4±9.5B 50.3±13.3B
V10 (%) 20.9±5.9A 19.1±5.5A 17.7±4.9A 26.8±6.2B 29.9±8.0B
V20 (%) 16.9±5.4Ab 15.0±5.0A 12.9±4.2Aa 14.6±4.5A 16.4±4.8Ab
V30 (%) 14.2±5.1B 12.2±4.6A 9.6±3.9A 9.6±3.9A 10.3±3.4A
V40 (%) 10.9±4.6A 8.7±3.9A 6.3±3.2B 4.7±2.5B 5.1±2.4B
  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).