 Background: Distribution of wall shear stress WSS may be different according to stent designs. The impact of WSS after stent implantation may impact future vessel healing after current generation drug-eluting stents implantation. Although previous studies used IVUS intravascular ultrasound and angiography to determine WSS from computational fluid dynamics CFD simulations, new methods using higher resolution OCT optical coherence tomography are warranted to further evaluate the impact of stent design on WSS with current generation drug-eluting stents. 