Association of deep tiny flow voids with prognosis of acute middle cerebral artery atherosclerotic occlusion.

Background: Deep tiny flow voids (DTFVs) have recently been identified as a novel form of collateral circulation linked to chronic steno-occlusive atherosclerotic middle cerebral artery (MCA) lesions, detectable via high-resolution magnetic resonance imaging (HR-MRI). To date, no study has focused on the presence and clinical significance of DTFVs in acute MCA atherosclerotic occlusion.

Materials And Methods: This retrospective study included patients with acute MCA atherosclerotic occlusion from two multicenter HR-MRI cohorts.