Characteristics and imaging findings in study patients
| Features | Data |
|---|---|
| No. of patients | 74 |
| Age (yr) | Mean, 63.4 |
| Sex | 36 Women (48%) |
| Median time from MRI to angiography (hr) | 2.9 (IQR, 1.1–4.7) |
| FVH present | 53/74 (72%) |
| FVH in arterial territory of ischemia | 53/53 (100%) |
| Location of FVH | |
| Sylvian fissure | 50/53 (94%) |
| Temporal lobe | 47/53 (89%) |
| Frontal lobe | 28/53 (53%) |
| Parietal lobe | 18/53 (34%) |
| Discontinuity or gap in FVH | 26/53 (49%) |
| FVH not noted on angiography | 21 (28%) |
| Angiographic findings in FVH-negative cases | |
| MCA M1 occlusion | 1 |
| MCA M1 stenosis with anterograde flow | 2 |
| MCA M2 occlusion | 2 |
| Distal (M3 or greater) occlusion | 8 |
| ICA occlusion without MCA occlusion | 2 |
| Vertebrobasilar occlusion | 3 |
| Posterior cerebral occlusion | 2 |
| Anterior choroidal occlusion | 1 |
Note:—MRI indicates MR imaging; FVH, fluid-attenuated inversion recovery vascular hyperintensities; MCA, middle cerebral artery; ICA, internal carotid artery.