Skip to main content

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

From: Changes in cardiac volume determined with repeated enhanced 4DCT during chemoradiotherapy for esophageal cancer

parameter V20(%) V30(%) V40(%) V45(%) V50(%) mean dose (Gy)
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
P
 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
  1. Abbreviation: upper-middle Comparison between the upper location between the middle location, upper-lower Comparison between the upper location and the lower location, middle-lower Comparison between the middle location and the lower location