RT Journal Article SR Electronic T1 Low-cost digital subtraction angiography. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 448 OP 451 VO 3 IS 4 A1 Ford, K K A1 Heinz, E R A1 Johnson, G A A1 Drayer, B D A1 Dubois, P J YR 1982 UL http://www.ajnr.org/content/3/4/448.abstract AB