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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).