- Poster presentation
- Open Access
Passive catheter tracking with a controllable susceptibility effect
© Dominguez-Viqueira et al; licensee BioMed Central Ltd. 2013
- Published: 30 January 2013
- Copper Sulfate
- Specific Pathogen Free
- Positive Contrast
- Susceptibility Effect
- Tracking Catheter
Due to the rich anatomic information available, MRI is an attractive tool for guiding endovascular interventions. Susceptibility artifact-based tracking using paramagnetic markers  is a simple and economical approach, but has been used with limited enthusiasm partly because of the image degradation that results from such devices. In this work, a susceptibility-based tracking catheter which can be mechanically turned ON and OFF  is presented with images in phantoms and animals studies.
A passive tracking catheter with a susceptibility effect that can be enabled and disabled by sliding one of the components was designed, fabricated and demonstrated in vivo. The difference between the aligned and miss-aligned configurations was large in the acquired MR images, showing the feasibility of tracking the device by periodically moving the graphite layer. Even though the device was demonstrated in a catheter, it can also be designed for different tools or devices for interventional MR procedures. In future work, faster imaging sequences will be implemented for real-time tracking.
Funding from the Canadian Institutes of Health Research (CIHR PPP106789).
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/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.