Table 2.
Technique details of VBM studies on migraine in the meta-analysis
| Study | MRI scanner | Software | Smoothing (FWHM) | P-Value | Foci number | Greater GMV | Smaller GMV |
|---|---|---|---|---|---|---|---|
| JH Kim et al. (2008) | 1.5 T | NA | NA | NA | 19 | Y | |
| Maria et al. (2006) | 3 T | SPM2 | 12 mm | P < 0.001 (uncorrected) | 40 | Y | Y |
| Matharu et al. (2003) | 2.0 T | SPM99 | 10 mm | P < 0.005 (uncorrected) | 0 | ||
| Walter et al. (2007) | 1.5 T | SPM2 | 12 mm | NA | 21 | Y | Y |
| Schmidt et al. (2008) | 1.5 T | SPM2 | 12 mm | P < 0.05 | 4 | Y |
Key: FDR: false discovery rate; FEW: family-wise error; FWHM: full width at half-maximum; MRI: magnetic resonance imaging; NA: not available; SPM: statistical parametric mapping; T: tesla; VBM: voxel-based morphometry.