The blood vessels in the body are connected to each other. Entering a blood vessel in any part of the body enables us to travel to blood vessel of another part of the body. Entering the blood vessel through a tiny hole over it and traversing the blood vessel with a catheter can well be monitored by image guidance. Being inside a blood vessel makes us capable to treat many blood vessel related diseases mostly by closing a normal/abnormal portion of a blood vessel (Embolization) or opening a closed vessel (Recanalization). The above concept applied in treating various diseases is called Interventional Radiology.

Simplifying further, we now understand that whenever there is a leaking blood vessel, anywhere in the body e.g. abnormal leaking blood vessels of the gastro intestinal tract causing GI bleed or an abnormally swelled blood vessel (Aneurysm) in brain getting ruptured and causing subarachnoid hemorrhage can be treated by embolization. Similarly, a block in a lower extremity artery to a block in an intracranial vessel can be successfully recanalized, hence treating these conditions from a tiny hole over a blood vessel in a relatively safer location.