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TABLE 1:

Comparison of methods of measurement of brain parenchymal fraction

No. of CasesSemiautomatedAutomated
2D3D2D3D
MeanSDMeanSDMeanSDMeanSD
Relapsing-remitting MS430.850.040.850.04NRNR0.840.05
Secondary progressive MS90.810.040.800.03NSNR0.800.04
All MS520.840.040.840.05NRNR0.830.05
Controls170.880.020.880.03NRNR0.880.03
  • Note.—2D and 3D sequences according to Methods section; MS, multiple sclerosis; NR, segmentation not reliable; SD, standard deviation; semiautomated and automated algorithms according to Methods section.