Angiographic and histologic comparison of injectable, expansile hydrogel embolic and pushable AZUR embolic devices in porcine arteries.

Purpose: To compare an injectable hydrogel embolic device with a pushable AZUR device procedurally, angiographically, and histologically in the embolization of porcine arteries.

Materials And Methods: In 12 pigs, embolization of renal, gluteal, and hepatic or thoracic arteries was performed with either injectable hydrogel embolic devices (two arteries per pig) or an AZUR device (one artery per pig). Follow-up angiography was performed before sacrifice in five pigs at 7 days after embolization and seven pigs at 90 days after embolization.