- Poster presentation
- Open Access
Lithography based resonant marker design for MRI catheter visualization
© Baysoy et al. 2016
- Published: 27 January 2016
- Cardiovascular Magnetic Resonance
- Seed Layer
- Cardiovascular Magnetic Resonance Imaging
- Solenoid Coil
- Thin Film Coating
The unavailability of safe, conspicuous devices remains the chief barrier to wider clinical adoption of interventional cardiovascular magnetic resonance imaging. Active catheter receiver coils are conspicuous but their metallic transmission lines risk heating and their manufacture requires excessive device size. We have designed a clinical grade 5 Fr radio frequency (RF) resonator marker embedded directly into the catheter shaft using novel lithography techniques. We developed special manufacturing techniques to impart these circuits onto non-planar catheter surfaces. This approach eliminates (1) the bulky circuit components such as wire-wound coils and rigid capacitors as well as (2) long conductive cables, required for receiver coil-based visualization, that are subject to heating.
We have successfully developed a lithography based technique to manufacture low profile resonant visibility markers directly onto catheter shafts. The final design provides satisfactory distal tip visibility under MRI and does not cause detectable RF induced heating compared with a comparable-profile active device under MRI.
This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.