RT Journal Article SR Electronic T1 The intravascular mobile structure detected with duplex carotid ultrasound in patients with cardioembolic carotid artery occlusion. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1391 OP 1392 VO 18 IS 7 A1 C G Ullrich YR 1997 UL http://www.ajnr.org/content/18/7/1391.abstract