Abstract #4005

Development and Evaluation of an MR-safe Interventional Catheter with Tunable MR Visibility and Radiopacity

Bridget F Kilbride¹, Caroline D Jordan², Andrew Chu³, Dave Barry³, Kerstin Mueller⁴, Sinyeob Ahn⁴, Teri Moore⁵, Mark W Wilson⁵, and Steven W Hetts⁵

¹Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States, ²Texas A&M University, Houston, TX, United States, ³Penumbra, Inc., Alameda, CA, United States, ⁴Siemens Medical Solutions, Malvern, PA, United States, ⁵University of California San Francisco, San Francisco, CA, United States

Interventional MRI catheter-based procedures are greatly limited by current devices and their safety profiles, and next-generation MR-safe devices are still in development. We designed and evaluated a polymeric catheter concept that is both safe and visible in MRI and X-ray environments. All imaging was done in a two-room hybrid angio-MR suite to demonstrate compatibility with next-generation image-guided procedures. In a phantom, we acquired GRE and TSE sequences at 3T and imaged on a clinical biplane angiographic system to quantitate MRI visibility and radiopacity, respectively. The catheters exhibited promising tracking characteristics under MRI and X-ray on a polymer-based catheter.

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