From: Reliability of preoperative MRI findings in patients with lumbar spinal stenosis
Parameter | Observer 1 | Observer 2 | Observer 3 | Observer 4 |
---|---|---|---|---|
Lee grade | 0.97 (0.96–0.99) | 0.84 (0.81–0.88) | 0.91 (0.88–0.93) | 0.95 (0.93–0.97) |
Schizas grade | 0.86 (0.80–0.93) | 0.80 (0.73–0.88) | 0.78 (0.70–0.85) | 0.98 (0.96–1.00) |
Weishaupt grade | 0.91 (0.89–0.94) | 0.72 (0.66–0.78) | 0.63 (0.56–0.70) | 0.97 (0.95–0.99) |
Redundant nerve roots (RNR) | 0.95 (0.91–0.98) | 0.78 (0.72–0.85) | 0.90 (0.86–0.94) | 0.95 (0.92–0.99) |
Intraspinal cysts | 0.99 (0.98–1.00) | 0.97 (0.95–0.98) | 0.99 (0.99–1.00) | 1.00 (1.00–1.00) |
DSCA | 0.98 (0.98–0.99) | 0.93 (0.91–0.94) | 0.96 (0.95–0.97) | 1.00 (1.00–1.00) |