Related Experiment Video
Updated: Jun 14, 2026
06:39
Novel Percutaneous Approach for Deployment of 3D Printed Coronary Stenosis Implants in Swine Models of Ischemic Heart Disease
Published on: February 18, 2020
Electromagnetic navigation for thoracic aortic stent-graft deployment: a pilot study in swine
Nadine Abi-Jaoudeh1, Neil Glossop, Michael Dake
1Department of Radiology and Imaging Sciences, National Institutes of Health, Rm 1C365 MSC 1182 10 Center Dr, 9000 Rockville Pike, Bethesda, MD 20890, USA. naj@mail.nih.gov
Journal of Vascular and Interventional Radiology : JVIR
|April 13, 2010
Summary
Electromagnetic tracking is feasible for thoracic aortic endograft delivery in swine. This technology, combined with fluoroscopy, shows promise for improving accuracy in complex endovascular procedures.
Area of Science:
- Medical Devices
- Biomedical Engineering
- Vascular Surgery
Background:
- Conventional imaging guidance for thoracic aortic endografts has limitations.
- Precise positioning and accurate deployment are critical for successful endovascular repair.
- Augmenting current methods with advanced tracking technologies is an area of active research.
Purpose of the Study:
- To assess the feasibility of electromagnetic tracking to guide thoracic aortic endograft delivery.
- To evaluate the accuracy of electromagnetic tracking for precise positioning and deployment.
- To determine if electromagnetic tracking can enhance safety in endovascular procedures.
Main Methods:
- Custom guide wires and delivery catheters with electromagnetic sensors were fabricated.
- Anesthetized swine underwent CT angiography with fiducial skin patches for registration.
- Electromagnetic guidance alone was used to advance a tracked guidewire and position the stent-graft assembly.
- Target registration error was measured using CT scans to compare actual and virtual device positions.
Main Results:
- Successful delivery and deployment of thoracic stent-grafts were achieved in all swine using electromagnetic tracking alone.
- Mean fiducial registration error was 1.5 mm.
- Mean target registration error for the guidewire and delivery catheter sensors were 4.3 mm and 2.6 mm, respectively.
- Mean stent-graft deployment error was 2.6 mm.
Conclusions:
- Electromagnetic tracking is a feasible and accurate method for delivering and deploying thoracic stent-grafts in a swine model.
- Combining endovascular electromagnetic tracking with conventional fluoroscopy may offer a more accurate, multimodal approach.
- This technology holds potential for improving outcomes in complex endovascular aortic repair.
