The distribution of FVHs in four subgroups
| FVH within DWI lesion | FVH beyond DWI lesion | FVH (both within and beyond) | |
| Total patients, n=100, (%) | 14 (14.0) | 73 (73.0) | 13 (13.0) |
| BZ group, n=29, (%) | 1 (3.4) | 26 (89.7) | 2 (6.9) |
| ML group, n=39, (%) | 0 (0) | 38 (97.4) | 1 (2.6) |
| LT group, n=26, (%) | 13 (50.0) | 3 (11.5) | 10 (38.5) |
| SL group, n=6, (%) | 0 (0) | 6 (100) | 0 (0) |
BZ group, border-zone infarct group; DWI, diffusion-weighted imaging; FVH, fluid-attenuated inversion recovery vascular hyperintensity; LT group, large territory infarct group; ML group, multiple lesion infarcts group; SL group, single cortical or subcortical lesion group.