Intentional obstruction of the lumen of a blood vessel by injection of a solution or dislodgement of thrombus or plaque.
The use of any type of embolic material (autologus thrombus, muscle fragment, or foreign body) for therapeutic occlusion of a blood vessel. This technique is used to control bleeding, close fistulae or arteriovenous malformations, devascularize organs, and reduce tumors or varicoceles. Generally a catheter is threaded through the vascular system to the origin of the vessel to be occluded, and an agent is injected under radiographic control.