IDC (Target Therapeutics, Fremont, CA) is a new embolic material to treat aneurysms. Part of the coil and its pusher are connected by an interlocking mechanism, and the coil is retrievable if the connecting part is in a microcatheter. Endovascular treatment was performed for 6 cases of cerebral aneurysms, including 3 of ruptured aneurysm with IDC. These comprised 4 cases of saccular aneurysm and 2 cases of dissecting aneurysm. These aneurysms located in the internal carotid artery in 3 cases, vertebral artery in 2 cases, and basilar artery in 1 case. The endovascular procedures include 4 intra-aneurysmal coil packings and 2 proximal occlusions. Complete occlusion of the aneurysm was obtained in 5 cases, but only partial occlusion was achieved in 1 case. During the procedure, no major complications occurred. After endovascular treatment, no rebleeding occurred. But embolic complications occurred in 2 cases, including transient ischemic attack and minor stroke. We conclude that endovascular treatment of cerebral aneurysms with IDC is a useful alternative, especially for surgically difficult aneurysms.
