RT Journal Article SR Electronic T1 Detection and Characterization of Very Small Cerebral Aneurysms by Using 2D and 3D Helical CT Angiography JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 154 OP 154 VO 24 IS 1 A1 Harry J. Cloft A1 David F. Kallmes YR 2003 UL http://www.ajnr.org/content/24/1/154.1.abstract AB