RT Journal Article SR Electronic T1 Evaluation of three embolic agents in pig rete. JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 773 OP 776 VO 10 IS 4 A1 Lee, D H A1 Wriedt, C H A1 Kaufmann, J C A1 Pelz, D M A1 Fox, A J A1 Vinuela, F YR 1989 UL http://www.ajnr.org/content/10/4/773.abstract AB In ongoing research into potential embolic agents, three substances were evaluated for their effectiveness in occluding the pig rete. Selective injection of these agents produced varying degrees of occlusion, with the most effective a microfibrillar collagen hemostat in a 33% ethanol solution. Angiostat, a collagen particulate, did not produce rete occlusion, and all pigs injected with it developed adverse effects, including coma and apnea. Tisseel, a tissue sealant, produced partial rete occlusion, but was uniformly difficult to manage through long catheters, and its use was discontinued. Microfibrillar collagen hemostat with ethanol appears to have the greatest potential as an embolic agent in low-flow structures.