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Table 4 Comparison of parameters in the Volume min, Volume max and Volume deformation phases for the left ventricular myocardium

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 Volumemax-Volumemin Volumemax- Volume deformation P (Volume max vs Volume min) P (Volume max vs Volume deformation)
Volume (cm3) 65.91 ± 14.91 81.69 ± 19.41 67.36 ± 17.01 15.78 ± 7.84 14.33 ± 7.47 0.000 0.000
Dmean 9.88 ± 3.63 7.36 ± 4.28 8.35 ± 3.88 2.76 ± 1.64 1.33 ± 0.95 0.000 0.003
V20 19.08 ± 9.23 12.20 ± 11.17 14.62 ± 10.06 7.34 ± 4.80 3.36 ± 2.50 0.000 0.006
V30 14.35 ± 8.18 8.33 ± 9.49 10.49 ± 8.31 6.58 ± 4.69 3.14 ± 2.48 0.000 0.010
V40 2.89 ± 3.10 1.30 ± 2.81 2.07 ± 2.93 2.20 ± 2.06 1.35 ± 1.41 0.005 0.061