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Table 1: 
Summary of motion artifact grading scores for MRI and dual-energy CTa
12345Mean Score (SE)P Value
All patients (n = 55)<.001b
    MRI0348403.02 (0.05)
    Dual-energy CT0004694.16 (0.05)
T1 or T2 stage (n = 6).050
    MRI003303.50 (0.22)
    Dual-energy CT000424.33 (0.21)
T3 stage (n = 13)<.001b
    MRI0111103.00 (0.11)
    Dual-energy CT0001214.08 (0.08)
T4a stage (n = 36)<.0001b
    MRI0234002.94 (0.04)
    Dual-energy CT0003064.17 (0.06)
  • Note:—SE indicates standard error.
  • ↵a Data are number of patients. The rating grade is as follows: grade 1, nondiagnostic with major artifacts; grade 2, major artifacts with most organs depicted with diagnostic image quality; grade 3, moderate artifacts with image quality low but diagnostic; grade 4, minor artifacts with good image quality; grade 5, no artifacts with excellent image quality.
  • ↵b Indicates a significant difference using the Wilcoxon signed rank test (P < .05).