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Table 2 Comparison of parameters in the Volume min, Volume max and Volume deformation phases for the heart

From: Impact of deformable image registration on dose accumulation applied electrocardiograph-gated 4DCT in the heart and left ventricular myocardium during esophageal cancer radiotherapy

  Volume min Volume max Volume deformation Volume max- Volume min Volume max- Volume deformation P (Volume max vs Volume min) P (Volume max vs Volume deformation)
Volume (cm3) 496.63 ± 100.73 577.15 ± 119.28 576.24 ± 114.15 80.51 ± 25.32 9.99 ± 7.88 0.000 0.986
Dmean 22.99 ± 2.70 22.89 ± 2.42 22.36 ± 2.46 0.41 ± 0.35 0.53 ± 0.34 0.487 0.000
V20 51.31 ± 6.89 51.55 ± 5.85 50.34 ± 6.08 1.30 ± 0.91 1.26 ± 0.77 0.476 0.000
V30 45.82 ± 6.71 46.01 ± 5.67 44.78 ± 5.91 1.26 ± 0.92 1.28 ± 0.78 0.498 0.000
V40 12.83 ± 6.21 12.72 ± 6.40 12.01 ± 6.03 0.75 ± 0.59 0.76 ± 0.70 0.476 0.001