Over 15 years has passed since aneurysm coil embolization using detachable coils was approved in Japan. Since then, the surgical indications for this procedure have increased and clinical outcome has improved, mainly through technological advances. In this article, we describe the indication, surgical equipment used (microcatheter, microguidewire, and coils), and technical considerations (including adjunctive techniques) for aneurysm embolization.
