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Table 3 Spearman correlation between spinal cord and marrow [18F]FDG uptake at the same vertebral level for PET-MRI images with 3–9 mm ROI/VOI

From: [18F]FDG uptake of the normal spinal cord in PET/MR imaging: comparison with PET/CT imaging

ROI = 3 mm SUVmax SUVmean NSUVmax NSUVmean
PET-MR rho p rho p rho p rho p
C2-C2_s 0.00 n.s. 0.07 n.s. 0.28 n.s. 0.37 n.s.
C5-C5_s 0.14 n.s. 0.27 n.s. 0.49 < 0.01 0.60 < 0.0001
T6-T6_s 0.54 < 0.001 0.48 < 0.01 0.74 < 0.0001 0.71 < 0.0001
T12-T12_s 0.40 < 0.01 0.39 n.s. 0.71 < 0.0001 0.73 < 0.0001
L3-L3_s 0.35 n.s. 0.43 < 0.01 0.53 < 0.001 0.58 < 0.0001
ROI = 9 mm SUVmax SUVmean NSUVmax NSUVmean
  rho p rho p rho p rho p
C2-C2_s 0.19 n.s. 0.27 n.s. 0.40 < 0.01 0.52 < 0.001
C5-C5_s 0.44 < 0.01 0.32 < 0.001 0.71 < 0.0001 0.74 < 0.0001
T6-T6_s 0.83 < 0.0001 0.58 < 0.0001 0.87 < 0.0001 0.79 < 0.0001
T12-T12_s 0.60 < 0.0001 0.60 < 0.0001 0.76 < 0.0001 0.80 < 0.0001
L3-L3_s 0.75 < 0.0001 0.48 < 0.01 0.76 < 0.0001 0.64 < 0.0001