Table 2.

Characteristics of different agents used in embolization.

Agent	Properties	Advantages	Inconvenience
NBCA	(i) Nonabsorbable, adhesive (ii) Rapid polymerization	(i) High durability (ii) Minimal inflammatory effect	High risk of gluing the microcatheter (instant polymerization)
Detachable coil	(i) New generation soft coil (ii) Hydrogel coated coils (increase in volume once in contact with blood, therefore decreasing initial coil-packing density)	(i) Durable (ii) Decreased risk of rupture (versus old-generation coil)	Risk of rupture (transient increase in pressure while deployment)
Onyx	Nonabsorbable, adhesive	(i) Slow polymerization (ii) Multiple injection from single catheter	(i) Requires familiarity (ii) Requires special catheter