ArticleIEEE transactions on bio-medical engineering2020
MRI Conditional Actively Tracked Metallic Electrophysiology Catheters and Guidewires With Miniature Tethered Radio-Frequency Traps: Theory, Design, and Validation.
Article in IEEE transactions on bio-medical engineering, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 25 citations in OpenAlex.
- Magnetic resonance imaging safety-driven, heat-mitigating design for a magnetic resonance imaging-guided, magnetically actuated robotic catheter.Medical physics · 2026Article
- Friction Modeling of Tendon-driven Continuum Robots through Linear Complementarity Problem.IEEE robotics and automation letters · 2026Article
- Modeling and Control of an MR-Safe Pneumatic Radial Inflow Motor and Encoder (PRIME).IEEE/ASME transactions on mechatronics : a joint publication of the IEEE Industrial Electronics Society and the ASME Dynamic Systems and Control Division · 2024Article
- Quasi-static Path Planning for Continuum Robots By Sampling on Implicit Manifold.IEEE International Conference on Robotics and Automation : ICRA : [proceedings]. IEEE International Conference on Robotics and Automation · 2024Article
- Optimized radiofrequency shimming using low-heating B1+-mapping in the presence of deep brain stimulation implants: Proof of concept.PloS one · 2024Article
- Concentric Tube Robot Redundancy Resolution via Velocity/Compliance Manipulability Optimization.IEEE robotics and automation letters · 2023Article
- Non-Metallic MR-Guided Concentric Tube Robot for Intracerebral Hemorrhage Evacuation.IEEE transactions on bio-medical engineering · 2023Article
- Interventional cardiovascular magnetic resonance: state-of-the-art.Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · 2023Review
- MRI-Conditional Eccentric-Tube Injection Needle: Design, Fabrication, and Animal Trial.IEEE/ASME transactions on mechatronics : a joint publication of the IEEE Industrial Electronics Society and the ASME Dynamic Systems and Control Division · 2023Article
- Review of Robot-Assisted HIFU Therapy.Sensors (Basel, Switzerland) · 2023Review
- An interventional MRI guidewire combining profile and tip conspicuity for catheterization at 0.55T.Magnetic resonance in medicine · 2023Article
- Intracardiac MR imaging (ICMRI) guiding-sheath with amplified expandable-tip imaging and MR-tracking for navigation and arrythmia ablation monitoring: Swine testing at 1.5 and 3T.Magnetic resonance in medicine · 2022Article
- MR-Tracked Deflectable Stylet for Gynecologic Brachytherapy.IEEE/ASME transactions on mechatronics : a joint publication of the IEEE Industrial Electronics Society and the ASME Dynamic Systems and Control Division · 2022Article
- A 20-gauge active needle design with thin-film printed circuitry for interventional MRI at 0.55T.Magnetic resonance in medicine · 2021Article
Corrections and comments
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Authors and funding
14 authors at 5 institutions in 2 countries.
Funding
Abstract
objectiveCardiovascular interventional devices typically have long metallic braids or backbones to aid in steerability and pushability. However, electromagnetic coupling of metallic-based cardiovascular interventional devices with the radiofrequency (RF) fields present during Magnetic Resonance Imaging (MRI) can make a device unsafe for use in an MRI scanner. We aimed to develop MRI conditional actively-tracked cardiovascular interventional devices by sufficiently attenuating induced currents on the metallic braid/tube and internal-cabling using miniaturized resonant floating RF traps (MBaluns).
methodMBaluns were designed for placement at multiple locations along a conducting cardiovascular device to prevent the establishment of standing waves and to dissipate RF-induced energy. The MBaluns were constructed with loosely-wound solenoids to be sensitive to transverse magnetic fields created by both surface currents on the device's metallic backbone and common-mode currents on internal cables. Electromagnetic simulations were used to optimize MBalun parameters. Following optimization, two different MBalun designs were applied to MR-actively-tracked metallic guidewires and metallic-braided electrophysiology ablation catheters. Control-devices were constructed without MBaluns. MBalun performance was validated using network-analyzer quantification of current attenuation, electromagnetic Specific-Absorption-Rate (SAR) analysis, thermal tests during high SAR pulse sequences, and MRI-guided cardiovascular navigation in swine.
resultsElectromagnetic SAR simulations resulted in ≈20 dB attenuation at the tip of the wire using six successive MBaluns. Network-analyzer tests confirmed ∼17 dB/MBalun surface-current attenuation. Thermal tests indicated temperature decreases of 5.9 °C in the MBalun-equipped guidewire tip. Both devices allowed rapid vascular navigation resulting from good torquability and MR-Tracking visibility.
conclusionMBaluns increased device diameter by 20%, relative to conventional devices, providing a spatially-efficient means to prevent heating during MRI. SIGNIFICANCE: MBaluns allow use of long metallic components, which improves mechanical performance in active MR-guided interventional devices.
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Registered trials
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