Table 3 Comparison of cardiac dose among different locations (rate %, Mean ± SD)

upper

17.24 ± 18.85

11.09 ± 12.35

5.15 ± 5.31

2.91 ± 3.15

1.48 ± 1.61

8.09 ± 7.58

middle

52.34 ± 22.13

39.48 ± 19.76

20.39 ± 11.07

12.99 ± 7.09

8.61 ± 5.79

2.49 ± 7.71

lower

41.80 ± 16.31

26.43 ± 9.44

16.73 ± 3.47

11.66 ± 1.17

8.40 ± 0.86

2.08 ± 6.47

 upper-middle

0.002

0.003

0.003

0.002

0.005

< 0.001

 upper-lower

0.149

0.272

0.127

0.072

0.071

0.053

 middle-lower

0.450

0.331

0.606

0.765

0.951

0.510