Embolization of intracranial aneurysms is performed by filling a spring coil into the aneurysm cavity through a microcatheter to form a thrombus to block the aneurysm and prevent it from rupture and bleeding again. The cost required is related to the size and shape of the aneurysm, the larger the aneurysm the more spring coils are filled in, the higher the cost. The wider the aneurysm neck, the higher the cost for stent-assisted embolization. The approximate cost is estimated based on the maximum diameter of the aneurysm. An aneurysm of 1 mm requires 10,000 yuan for the spring coil, and an aneurysm of 5 mm in diameter requires 50,000 yuan for the spring coil, plus anesthesia and catheterization costs, which can be as little as 70,000-80,000,000 and as much as 200,000-300,000,000. If you need to use stent assistance, a stent is about $40,000.