Clinical and Imaging Outcomes after Stroke with Normal Angiograms

American Journal of Neuroradiology

TABLE 1:

Stroke etiologies by TOAST classification

Etiology	Number	Comment
Cardioembolic	7^*	5 high-risk sources, 2 medium-risk sources
Small-vessel occlusion	2	Possible
Unknown	2	Probable
Other	1	Postcoronary catheterization
Multiple	9	Small-vessel occlusion and cardioembolic (1 high-risk source, 8 medium-risk sources)

* Cardiac sources included: atrial fibrillation (n = 3), left ventricular thrombus (n = 1), akinetic left ventricular segment (n = 1), nonbacterial thrombotic endocarditis (n = 1), and atrial septal aneurysm with patent foramen ovale (n = 1).

TABLE 2:

CT and MR imaging findings