Bioelectric Navigation: A New Paradigm for Intravascular Device Guidance

Fuerst, Bernhard; Sutton, Erin E.; Ghotbi, Reza; Cowan, Noah J.; Navab, Nassir

doi:10.1007/978-3-319-46720-7_55

Cited by 3 publications

(1 citation statement)

References 12 publications

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“…Therefore alternative technologies have attempted to address these issues. A recent example uses bioimpedance models using integrated electrodes [7] which infers the internal geometry of the vessel and mapped to a pre-interventional model, but is limited to the catheter tip. Optical shape sensing (OSS) is another technology measuring light deflections guided into optical fibers in order to measure strain changes in real-time, thereby inferring the 3D shape of the fiber by means of an integrative approach.…”

Section: Introductionmentioning

confidence: 99%

UV Exposed Optical Fibers with Frequency Domain Reflectometry for Device Tracking in Intra-arterial Procedures

Parent

Gérard

Kashyap

et al. 2017

Lecture Notes in Computer Science

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Abstract. Shape tracking of medical devices using strain sensing properties in optical fibers has seen increased attention in recent years. In this paper, we propose a novel guidance system for intra-arterial procedures using a distributed strain sensing device based on optical frequency domain reflectometry (OFDR) to track the shape 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 strain sensors, we propose a truly distributed strain sensing approach, which allows to reconstruct a fiber triplet in real-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 flow velocities in the arterial tree. We employed Riemannian anisotropic heat kernels to map the sensed data to the pre-interventional model. Experiments in synthetic phantoms and an in vivo model are presented. Results show that the tracking accuracy is suitable for interventional tracking applications, with a mean 3D shape reconstruction errors of 1.6±0.3 mm. This study demonstrates the promising potential of MR-compatible UV-exposed OFDR optical fibers for non-ionizing device guidance in intra-arterial procedures.

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Section: Introductionmentioning

confidence: 99%