2018 Volume Annual56 Issue Abstract Pages S85
In artificial dialysis, arteriovenous fistula is generally indispensable. However, it often causes stenosis and occlusion. To solve these problems, we have proposed an optical transillumination imaging technique and proved its fundamental usefulness.In previous experimental studies, we used the model phantoms of blood vessels with uniform inner diameters. However, the patient's blood vessel is generally nonuniform with local stenosis. In this study, the feasibility of the proposed technique was examined using the model phantom of blood vessels with locally narrowed inner diameters.In experiment, we could measure the inner diameter as small as 2.0 mm (3.0 mm length). The application criteria of PTA (percutaneous transluminal angioplasty) for the stenosis is 2.5 mm inner diameter. The measurement error 20% is considered to be sufficiently small for clinical applications. This result suggested the practical feasibility of the optical transillumination imaging of the stenosis in the arteriovenous fistula.
