Table 2:

Scoring pattern of variables

Patterns
Clinical findings
    Age
    Sex
Nominal variables ranked by visual inspection of conventional MR imaging
    SideLeft, right
    SiteSuperficial (only cortical, not in basal ganglia and outside the insula), deep (involves the insula, thalamus,     basal ganglia, or posterior fossa)
    Multi-focality0 (no),
1 (yes)
    Functional locationNoneloquent, near-eloquent, eloquent brain
    Mass effect0 (not apparent),
1 (deformity of ventricle, no midline shift),
2 (moderate, <5 mm),
3 (significant, >5 mm)
    Edema0 (not apparent),
1 (<tumor volume),
2 (≥tumor volume)
    Cyst0 (no),
1 (yes)
    Necrosis0 (none),
1 (<25% of tumor volume),
2 (25%–50% of tumor volume),
3 (>50% of tumor volume)
    Enhancement0 (none),
1 (low-to-medium signal intensity),
2 (medium-to-high signal intensity)
    Enhancing margin0 (well-defined),
1 (none or poorly defined)
    Extent of resectionBased on postoperative scans:
0 (total resection),
1 (90%–99%),
2 (20%–89%),
3 (<20%)
Volumes of ROIs
    ET (neoplastic)
    NET, including neoplastic, edematous, necrotic, or cystic
Intensity characteristics of DTI (B0, FA, trace) and rCBV over the 2 ROIs (ET, NET)
    Mean
    Minimum
    Maximum
    Peak of histogram
    Variance