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Table 1 Mean and standard deviation of PDFF (%) and volume (cm3) of each muscle compartment in the training and test dataset

From: Automated assessment of paraspinal muscle fat composition based on the segmentation of chemical shift encoding-based water/fat-separated images

  Training set (n = 14) Testing set (n = 6)
Fat fraction Volume GT fat fraction AS fat fraction Δ fat fraction p GT volume AS volume p
Right erector spinae 6.66 ± 2.07 241 ± 56 5.10 ± 1.09 5.49 ± 1.14 0.39 0.012 235 ± 60 287 ± 74 0.012
Left erector spinae 6.29 ± 2.19 252 ± 53 3.44 ± 1.88 4.02 ± 1.90 0.58 0.012 238 ± 56 293 ± 74 0.012
Right quadratus lumborum 6.44 ± 5.21 45 ± 10 5.36 ± 1.22 4.86 ± 0.72 0.50 0.025 43 ± 13 45 ± 14 0.263
Left quadratus lumborum 7.46 ± 5.82 51 ± 13 4.24 ± 3.27 3.69 ± 2.43 0.55 0.123 47 ± 14 47 ± 15 0.889
Right psoas 4.19 ± 2.65 121 ± 28 4.01 ± 1.68 3.82 ± 1.56 0.19 0.093 117 ± 35 130 ± 45 0.025
Left psoas 4.04 ± 3.87 119 ± 33 2.98 ± 2.58 2.96 ± 2.22 0.02 0.575 109 ± 35 135 ± 51 0.017
  1. p values refer to the comparison of automatic segmentation (AS) and ground truth (GT) results in the test dataset