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Table 7 Associations between MRI finding in the spine and the diagnosis of AS and IBP

From: A systematic critical review on MRI in spondyloarthritis

MRI findings Sensitivity of MRI findings (95% CI) Specificity of MRI findings (95% CI) Cases, number Controls, number
    AS IBP No LBP
≥ 1 CIL 0.77 (0.61-0.88) 0.77 (0.61-0.88) 35   35
≥ 2 CIL 0.69 (0.52-0.81) 0.94 (0.81-0.98) 35   35
≥ 3 CIL 0.66 (0.49-0.79) 0.94 (0.81-0.98) 35   35
≥ 1 tCIL 0.69 (0.52-0.81) 0.83 (0.67-0.92) 35   35
≥ 2 tCIL 0.57 (0.41-0.72) 0.94 (0.81-0.98) 35   35
≥ 3 tCIL 0.46 (0.30-0.62) 0.97 (0.85-0.99) 35   35
≥ 1 lCIL 0.51 (0.36-0.67) 0.94 (0.81-0.98) 35   35
≥ 1 NIL 0.06 (0.02-0.19) 0.97 (0.85-0.99) 35   35
≥ 1 LIL 0.31 (0.19-0.48) 0.97 (0.85-0.99) 35   35
≥ 1 FIL/PIL 0.09 (0.03-0.22) 1.00 (0.90-1.00) 35   35
≥ 1 CIL 0.40 (0.23-0.59) 0.88 (0.70-0.96)   25 25
≥ 2 CIL 0.32 (0.17-0.52) 0.96 (0.80-0.99)   25 25
≥ 3 CIL 0.12 (0.04-0.30) 0.96 (0.80-0.99)   25 25
≥ 1 tCIL 0.32 (0.17-0.52) 0.88 (0.70-0.96)   25 25
≥ 2 tCIL 0.24 (0.11-0.43) 0.96 (0.80-0.99)   25 25
≥ 3 tCIL 0.12 (0.04-0.30) 0.96 (0.80-0.99)   25 25
≥ 1 lCIL 0.24 (0.11-0.43) 1.00 (0.87-1.00)   25 25
≥ 1 NIL 0.04 (0.01-0.20) 0.96 (0.80-0.99)   25 25
≥ 1 lCIL 0.12 (0.04-0.30) 0.96 (0.80-0.99)   25 25
≥ 1 FIL/PIL 0.00 (0.00-0.13) 1.00 (0.87-1.00)   25 25
  1. Sensitivity and specificity based on concordant observations of three readers; results from Weber et al. (2009). AS, Ankylosing spondylitis; IBP, inflammatory back pain; no LBP, no low-back pain; CIL, vertebral corner inflammatory lesion; tCIL, thoracic CIL; lCIL lumbar CIL; NIL, vertebral noncorner inflammatory lesion; LIL, lateral inflammatory lesion; FIL/PIL, facet or other posterior element inflammatory lesion.