Table 2. Parameters for discriminating between PCNSL and GBM.
| Univariate analysis | Odds ratio* | 95% CI | p value |
|---|---|---|---|
| SUVmax | 1.77 | 1.30–2.43 | 3.5 × 10-4 |
| T/N_SUVmax | 18.1 | 4.87–67.6 | 1.6 × 10-5 |
| rTBFmax | 0.17 | 0.059–0.47 | 7.7 × 10-4 |
| Number of enhancing lesions | 1.46 | 1.01–2.13 | 0.047 |
| Multivariate analysis | |||
| T/N_SUVmax | 261.0 | 3.23–21100 | 0.013 |
| rTBFmax | 0.0036 | 1.78 × 10-5–0.72 | 0.018 |
| Number of enhancing lesions | 2.52 | 0.81–7.78 | 0.11 |
*Ratio for diagnosing PCNSL.
CI: confidence interval, GBM: glioblastoma, PCNSL: primary central nervous system lymphoma, rTBFmax: relative maximum tumor blood flow, SUVmax: standardized uptake value, T/N: the ratio of tumor to normal contralateral gray matter.