Parameter IMRT Conventional  p value  Favors Range Mean+SD Range Mean+SD Minimum Maximum Minimum Maximum Ipsilateral lung V20 41.00% 56.70% 49.2 + 3.5% 44.20% 73.90% 59.8  + 7.4% p<0.001 IMRT Ipsilateral  lung V5 70.50% 100.00% 97.0 ± 6.1% 90.10% 100.00% 98.7 ± 1.8% NS Equivocal Ipsilateral  lung D33% 25.7 Gy 39.9 Gy 33.7 ± 4.1 Gy 25.5 Gy 48.7 Gy 39.4 ± 5.1Gy p<0.001 IMRT Ipsilateral  lung D66% 7.2 Gy 23.8 Gy 14.5 ± 3.4 Gy 10.1 Gy 30.3 Gy 16.5 ± 5.3 Gy NS Equivocal Ipsilateral   lung D100% 0.1 Gy 8.2 Gy 3.8 ± 2.5 Gy 0.2 Gy 99.8 Gy 7.2 ± 19.3Gy NS Equivocal Contralateral lung V20 0.00% 1.20% 0.2 ± 0.3% 0.00% 9.50% 2.7 ± 2.3% p<0.001 IMRT Contralateral lung V5 2.10% 31.60% 12.2 ± 7.1% 0.70% 21.20% 9.7 ± 5.3% NS Equivocal Contralateral lung D33% 1.7 Gy 14.2 Gy 3.8 ± 2.3 Gy 1.9 Gy 5.3 Gy 2.8 ± 0.6 Gy p=0.043 Conventional Contralateral lung D66% 0.0 Gy 3.8 Gy 1.9 ± 0.8 Gy 1.3 Gy 3.2 Gy 1.9 ± 0.45 Gy NS Equivocal Contralateral lung D100% 0.0 Gy 1.8 Gy 0.6 ± 0.4 Gy 0.3 Gy 4.5 Gy 1.07 ± 0.7 Gy p=0.050 IMRT Heart  D33% 4.2 Gy 35.6 Gy 17.3 ± 10.1Gy 4.7 Gy 44.0 Gy 33.2 ± 11.3Gy p<0.001 IMRT Heart  D66% 0.0 Gy 34.9 Gy 9.4 ± 9.3Gy 1.6 Gy 35.9 Gy 13.1 ± 12.6Gy NS Equivocal Heart  D100% 0.0Gy 7.6 Gy 2.3 ± 1.7Gy 0.2 Gy 5.6 Gy 2.1 ± 1.5Gy NS Equivocal S cord  Dmax 3.0 Gy 49.4 Gy 39.5 ± 7.1Gy 46.9 Gy 64.3 Gy 55.7 ± 5.2Gy p<0.001 IMRT Opposite breast Dmean 1.6 Gy 9.4 Gy 5.8 ± 1.8Gy 0.6 Gy 5.4 Gy 2.0 ± 1.1Gy p<0.001 conventional

Table 3: Comparison of dose and volume parameters of ipsilateral and contralateral lung, heart, spinal cord and opposite breast by IMRT and conventional plan.