UV Exposed Optical Fibers with Frequency Domain Reflectometry for Device Tracking In Intra-Arterial Procedures > 자유게시판

Shape tracking of medical units utilizing strain sensing properties in optical fibers has seen increased consideration in recent times. On this paper, we propose a novel steering system for intra-arterial procedures utilizing a distributed pressure sensing device primarily based on optical frequency area reflectometry (OFDR) to track the form of a catheter. Tracking enhancement is provided by exposing a fiber triplet to a focused ultraviolet beam, producing high scattering properties. Contrary to typical quasi-distributed pressure sensors, we propose a really distributed pressure sensing strategy, which allows to reconstruct a fiber triplet in actual-time. A 3D roadmap of the hepatic anatomy integrated with a 4D MR imaging sequence allows to navigate the catheter within the pre-interventional anatomy, and map the blood movement velocities within the arterial tree. We employed Riemannian anisotropic heat kernels to map the sensed data to the pre-interventional model. Experiments in artificial phantoms and an in