Table 3 Diagnostic performance of T1ρ, T2 and T2* relaxation times of nucleus pulpous for different Pfirrmann grades
From: T1ρ, T2 and T2* mapping of lumbar intervertebral disc degeneration: a comparison study
Modalities and Pfirrmann grades | AUC (95%CI) | P value | Cutoff (ms) | Sensitivity (%) | Specificity (%) |
|---|---|---|---|---|---|
T1ρ mapping | |||||
II -III vs. I | 0.70 (0.59–0.80) | < 0.001 | ≤ 177.35 | 80.2 | 53.10 |
IV–V vs. I-III | 0.91 (0.87–0.95) | < 0.001 | ≤ 125.35 | 91.49 | 76.35 |
T2 mapping | |||||
II -III vs. I | 0.87 (0.80–1.00) | < 0.001 | ≤ 131.14 | 87.93 | 71.87 |
IV–V vs. I-III | 0.95 (0.92–0.98) | < 0.001 | ≤ 67.92 | 91.49 | 87.84 |
T2* mapping | |||||
II- III vs. I | 0.80 (0.70–0.89) | < 0.001 | ≤ 58.8 | 68.97 | 84.37 |
IV–V vs. I-III | 0.82 (0.75–0.88) | < 0.001 | ≤ 45.68 | 85.11 | 61.49 |