Table 2. Univariate analysis of MR parameters with respect to treatment response.
| Number of lesions | Interobserver agreement (Cohen's κ, 95% confidence interval) | Association with treatment response | ||||
|---|---|---|---|---|---|---|
| Progression | No progression | P value | Odds ratio (95% confidence interval) | |||
| Enhancement (analyzed without subtraction image) | 0.55 (0.18−0.93) | |||||
| Positive | 6/41 (14.6%) | 66.7% (4/6) | 33.3% (2/6) | − | − | |
| Indeterminable | 35/41 (85.4%) | − | − | |||
| Enhancement (analyzed with subtraction image) | 0.68 (0.45−0.91) | 0.048* | 12.1* (1.02−144.05) | |||
| Positive | 28/41 (68.3%) | 46.4% (13/28) | 53.6% (15/28) | |||
| Negative | 13/41 (31.7%) | 7.7% (1/13) | 92.3% (12/13) | |||
| T2 signal intensity | 0.85 (0.69−1.0) | 0.040* | 8.16* (1.10–60.67) | |||
| Intermediate high SI | 23/41 (56.1%) | 52.2% (12/23) | 47.8% (11/23) | |||
| Hypo-to-isointense SI | 18/41 (43.9%) | 11.1% (2/18) | 88.9% (16/18) | |||
*
Age, gender, and lesion size were adjusted.