Selective removal of cholesteryl oleate through collagen films by MIR FEL

In this paper, two layers tissue model were proposed to evaluate the removal effect. The sample was made of cholesteryl oleate as a model of atherosclerotic legions and collagen as a model of endothelial cells and was exposed to the 5.75 μm FEL. As results, it was found that the amount of the light which transmitted gelatin layer was enough to remove cholesteryl oleate, and that the cholesteryl oleate under the gelatin layer can be removed by the FEL about 15% without structure damage of the gelatin layer as a model of normal endothelial cells.