Coronary artery stenting has emerged as the gold standard for the treatment of cardiovascular diseases. With this revolutionary technology, stents today have extended their indications from coronary artery diseases to many other applications including carotid, renal, and femoral arteries. A stent is a small, coiled wire-mesh tube that can be deployed into a narrowed artery and expanded by a catheter during angioplasty. Inserting such a foreign body into human is likely to induce adverse biological reactions such as restenosis. It is believed that the low wall shear stress (WSS) region on the stented arterial wall is related to restenosis [1–2].

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