Cervical vascular imaging (ACEP Level B in patients with high short-term risk for stroke):[1]
MRA brain (without contrast) AND
MRA neck (without contrast)
May instead use Carotid CTA or US (Carotid US slightly less sensitive than MRA)[2] (ACEP Level C)
↑ACEP Clinical Policy: Suspected Transient Ischemic Attackfull text
↑Nederkoorn PJ, Mali WP, Eikelboom BC, et al. Preoperative diagnosis of carotid artery stenosis. Accuracy of noninvasive testing. Stroke. 2002;33:2003-2008.