ABSTRACT
This article surveys current technical advancement in neuroendovascular therapy. The technical advancement happens not only in the field of products of microcatheter and guide wire but in the field of diagnosis. In the local intraarterial fibrinolysis, diffusion weighted MR imaging allows us more precise patient selection. In the atherosclerotic lesions, stent is clinically available. Some types of stent can be used in intracranial arteries. In the acutely ruptured aneurysm, intraanerysmal embolization using Guglielmi detachable coil followed by intratechal tissue-type plasminogen activator reduced occurring rate of vasospasm. In the wide neck aneurysm, neck plasty technique brings us better results. Neuroendovascular therapy is still evolving supported by such technical advancement.