Table 1

 Mean values of cervical cord diffusion tensor MRI histogram derived metrics from 10 healthy subjects and 11 patients with neuropsychiatric systemic lupus erythematosus

Healthy subjectsNSLE patientsp Value
FA, fractional anisotropy; MD, mean diffusivity; NSLE; neuropsychiatric systemic lupus erythematosus.
Values are mean (SD).
MD is expressed in mm2/s ×10−3; FA is a dimensionless index. Normalised histogram peak heights are expressed in per cent units.
Mean MD1.21 (0.09)1.36 (0.20)NS
MD peak height11.1 (1.70)7.5 (1.13)0.0001
Mean FA0.42 (0.04)0.37 (0.08)NS
FA peak height6.7 (1.84)6.2 (1.65)NS