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Table 1 Metrics recorded from DVHs

From: IMRT sparing of normal tissues in locoregional treatment of breast cancer

Treatment planning metrics

PTV

V47.5

97.6% ± 1.5%

V53.5

5.9% ± 6.8%

Ipsilateral lung

Mean dose

10.2Gy ± 1.1Gy

V5

49.8% ± 10.4%

V20

16% ± 3.4%

Controlateral lung

Mean dose

5.3Gy ± 0.6Gy

V5

43.7% ± 8.9%

V20

0.5% ± 1.2%

Controlateral breast

Mean dose

4.0Gy ± 0.8Gy

V5

30.3% ± 15.7%

V10

2.3% ± 4.1%

Heart

Right side

Left side

Mean dose

7.8Gy ± 1.1Gy

8.0Gy ± 1.2Gy

V25

1.9% ± 1.4%*

3.7% ± 1.9%*

LAD artery

Right side

Left side

Dose max

33.3Gy ± 13.3Gy

26.7Gy ± 15.7Gy

Median dose

13.3Gy ± 5.6Gy

10.8Gy ± 7.8Gy

RCA artery

Right side

Left side

Dose max

30.3Gy ± 8.6Gy

27.0Gy ± 12.4Gy

Median dose

14.0Gy ± 4.9Gy

12.4Gy ± 5.7Gy

LCx artery

Right side

Left side

Dose max

8.6Gy ± 4.4Gy

8.8Gy ± 3.2Gy

Median dose

4.4Gy ± 1.5Gy

4.5Gy ± 1.7Gy

  1. Vx = Volume of target/normal tissue receiving at least x Gy. Values reported are average ± standard deviation of metrics recorded.
  2. LAD: left anterior descending artery, RCA: right coronary artery, LCx: left circumflex artery.
  3. * Comparison of means significantly different between the right and left side treated. t-test, p = 0.01.