TABLE 2

Cerbrovascular Imaging Modalities and Their Findings in Children With AISs

n/N (%)
Perinatal (N = 84)Later Childhood (N = 97)
Vascular imaging modality
    No vascular imaging72 (86)45 (46)
    Vascular imaginga12 (14)52 (54)
        Conventional angiography0 (0)26 (27)
        MR angiography brain10 (12)36 (37)
        MR angiography neck0 (0)7 (7)
        MR venography1 (0)0 (0)
        CT angiography0 (0)1 (1)
Finding on vascular imaging
    Normal6/12 (50)24/52 (46)
    Large vessel occlusionb4/12 (33)6/52 (12)
    Abnormal vascular imaginga2/12 (17)22/52 (42)
        Large vessel stenosis2/12 (17)20/52 (38)
        Moyamoya syndrome0/12 (0)7/52 (13)
        Vasculitis0/12 (0)2/52 (4)
        Arterial dissection0/12 (0)1/52 (2)
  • MR indicates magnetic resonance; CT, computed tomography.

  • a Subcategories are not mutually exclusive.

  • b Isolated occlusion, not included in our definition of vascular abnormality.