脳動脈瘤塞栓術における“sheep technique”の有用性

●Abstract● Objective: The “Sheep technique” is a special technique for navigating a balloon catheter that is difficult to navigate because of the steep angle of the branching vessel. Case presentation: We treated two patients having intracranial aneurysms by endovascular therapy with the sheep technique. In both cases, initial balloon catheter navigation failed because the branch near the aneurysm was steep. With the aid of the sheep technique, the balloon catheter was successfully delivered into the target vessel. Coil embolization was then performed using a balloon remodeling technique. Conclusion: The sheep technique is effective when balloon catheter delivery is difficult because the branch near the aneurysm is steep. ●Key Words● balloon remodeling technique, cerebral aneurysm, microcatheter delivery, neuroendovascular therapy, sheep technique