RT Journal Article SR Electronic T1 The roles of MR angiography, CT angiography, and sonography in vascular imaging of the head and neck. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1820 OP 1825 VO 18 IS 10 A1 Brant-Zawadzki, M A1 Heiserman, J E YR 1997 UL http://www.ajnr.org/content/18/10/1820.abstract AB