Table 2:
Classification accuracy obtained for classification of grade III and grade IV gliomas.
| Modality | Complexity Dimensions | Accuracy (%) |
Sensitivity (%) |
Specificity (%) |
|
|---|---|---|---|---|---|
| Single Modality Models | CBV | 5 | 93.7 ± 1.9 | 71.5 ± 8.7 | 100 ± 0 |
| Cho/Cr | 5 | 93.3 ± 5.0 | 69.8 ± 22.6 | 100 ± 0 | |
| ΔT2 | 5 | 90.9 ± 2.7 | 59.0 ± 12.1 | 100 ± 0 | |
| ΔT1 | 5 | 88.2 ± 4.0 | 46.8 ± 18.0 | 100 ± 0 | |
| Cho/NAA | 5 | 88.0 ± 3.9 | 37.0 ± 17.6 | 100 ± 0 | |
| NAA/Cr | 5 | 86.8 ± 2.9 | 40.8 ± 13.1 | 100 ± 0 | |
| FA | 5 | 86.5 ± 4.1 | 39.3 ± 18.6 | 100 ± 0 | |
| ADC | 5 | 83.8 ± 3.1 | 35.0 ± 12.3 | 100 ± 0 | |
| T2 | 5 | 81.4 ± 3.5 | 16.5 ± 15.6 | 100 ± 0 | |
| CE T1 | 5 | 80.6 ± 3.3 | 12.5 ± 14.9 | 100 ± 0 | |
| T1 | 5 | 80.4 ± 3.0 | 12.0 ± 13.5 | 100 ± 0 | |
| Combination Models | Top 2 (CBV, Cho/Cr) | 10 | 93.5 ± 2.1 | 70.8 ± 9.4 | 100 ± 0 |
| Top 3 (CBV, Cho/Cr, ΔT2) | 15 | 92.1 ± 2.9 | 64.5 ± 12.9 | 100 ± 0 | |
| All | 55 | 91.8 ± 2.8 | 63.0 ± 12.6 | 100 ± 0 | |
| DWI (ADC, FA) | 10 | 88.9 ± 4.7 | 55.5 ± 18.7 | 100 ± 0 | |
| MRS (Cho/Cr, Cho/NAA, NAA/Cr) | 15 | 85.8 ± 3.3 | 43.0 ± 13.3 | 100 ± 0 | |
| SUBTRACTION (ΔT1, ΔT2) | 10 | 89.4 ± 4.0 | 52.3 ± 18.2 | 100 ± 0 |
All the data represents mean ± standard deviation unless otherwise indicated. Abbreviations: ADC, Apparent Diffusion Coefficeint; CBV, Cerebral Blood Volume; Cho, Choline; NAA, N-acetylaspartate; Cr, Creatine; FA, fractional anisotropy; CE, Contrast Enhanced; DWI, diffusion-weighted imaging; MRS, MR spectroscopy