Shi Qiang PhD, Presenter: Nothing to Disclose

To evaluate the curative effects of stent placement and balloon angioplasty in patients with symptomatic middle cerebral artery（MAC） stenosis.

37 patients with recurrent transient ischemic attacks (TIA ) underwent stent placement or balloon angioplasty according to both the stenosis classification of Mori and access of lesions. Stent placement was performed in patients with Mori type A and access type I or II and balloon angioplasty in patients with Mori type B or C and access type III.

The stent placement was done successfully in 20 of the 21 patients with Mori type A and access type I or II, and 12% to 76% of increment in lumen diameter was obtained in these 20 patients. One patient died of vascular rupture after the operation. The balloon angioplasty was done successfully in 14 of the 16 patients with Mori type B or C and access type III, and 15% to 69% of increment in lumen diameter was obtained in these 14 patients. In stent placement group, the symptoms of TIA disappeared in 17 patients and were markedly improved in 2 patients. Transcranial Doppler （TCD）examination showed the blood flow velocity increased markedly in 2 patients experiencing recurrent TIA. In balloon angioplasty group, the symptoms of TIA disappeared in 12 patients and recurred in 4 patients. TCD examination showed the blood flow velocity increased markedly in 6 patients. MCA stroke occurred in 2 patients.

Both stent placement and balloon angioplasty are effective in treating MCA stenosis. To choose the suitable procedure according to the classifications of Mori and access may be an effective approach to minimize the severe complications of stent placement or balloon angioplasty in treating MCA stenosis.

Middle cerebral artery (MCA) stenosis intervention therapy

Qiang, S, Interventional Treatment for High Risk Patients with Symptomatic Intracranial Arterial Stenosis.  Radiological Society of North America 2007 Scientific Assembly and Annual Meeting, November 25 - November 30, 2007 ,Chicago IL. http://archive.rsna.org/2007/5005968.html