About Arterial Interventions
We provide a comprehensive suite of arterial interventions to treat a variety of conditions.
Blood vessels may become narrowed or blocked over time as the result of peripheral arterial disease or other related conditions. Through minimally invasive procedures, interventional radiologists can open the blocked vessels. Procedures such as angiograms, angioplasty, stent graphs and stenting can diagnose and correct problems in the arterial system.
The procedures we provide
Some of the places where the above procedures are performed in the body
Abdominal Aortic Stent Graft
Abdominal aortic aneurysm stent grafts are performed to bypass large aneurysms in the abdominal section of the aorta which could otherwise lead to life-threatening rupture.
During the procedure, an interventional radiologist advances a catheter through a small incision in the groin to the site of the aneurysm. Through the catheter, the radiologist places a fabric tube (graft) that is long enough to span the bulging area. The tube is held in place by a stent, which is a metal mesh tube. The stent exerts outward pressure against the graft and artery to keep the graft snuggly in position. The blood then flows through the graft and bypasses the aneurysm. Without the pressure of flowing blood, the aneurysm will eventually shrink and the risk of rupture is greatly reduced.
In some cases, it is determined that the result of the balloon angioplasty alone will not provide sufficient blood flow through the arteries. In such instances, the interventional radiologist may place a stent (an expandable wire-mesh tube) in the artery to keep it from closing again (a condition called restenosis). The stent is a mesh-like tubular metal scaffold placed on a specially designed balloon catheter and then delivered to the diseased area in the same fashion as the PTA balloon catheter. For some patients, stenting is contraindicated because 1) they cannot take platelet inhibitors (anti-platelet) and-or anticoagulation therapy that may be needed, or 2) their renal artery disease in a location that prevents complete inflation of an angioplasty balloon.
Mesenteric Artery – Angioplasty & Stenting
Both angioplasty and stenting may be used to bypass the fatty deposits that build up in the arteries that feed the intestines. Patients with mesenteric ischemia typically have blockages in many of the vessels in their superior mesenteric artery and the celiac axis.
To clear these blockages, an interventional radiologist makes a small incision in the arm to insert a catheter via the brachial artery. Using image guidance, the catheter is guided down the chest into the abdominal aorta. A wire is passed through each blockage and then a covered stent mounted on a balloon to open the vessels may be placed. The access can also be via the femoral artery in the groin, but that is not always the easiest route due to the sharp angles required to navigate the catheter. Access via the neck artery is sometimes used.
A stent is a small, mesh tube used in procedures to open narrow or blocked arteries. During the procedure, an interventional radiologist threads a small catheter through a tiny incision in the groin to the location of the abnormal vessel. The stent is pushed through the catheter and into the artery. Once in place, the stent will support the inner wall of the artery and restore blood flow through the once problematic vessel.