Improving the visibility of interventional devices is of paramount importance if MRI-guided fluoroscopy is to become a reality. Passive visualization is problematic in that the susceptibility-induced artifacts are material- and orientation-dependent. Here a concept is presented for making interventional devices visible. It involves fitting a device with a straight-wire antenna. As the sensitivity of such an antenna is highest for signal sources in the immediate neighborhood, using the antenna for reception gives an outline image. In this manner a guidewire or other interventional device could be made MRI-visible. The image appearance of a straight-wire antenna depends on the orientation of the device with respect to the main magnetic field and imaging plane. This phenomena is discussed theoretically and documented with MR images.
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Köchli VD, McKinnon GC, Hofmann E, von Schulthess GK (1994) Vascular interventions guided by ultrafast MR imaging: Evaluation of different materials.Magn Reson Med 31: 309–314.
Ackerman JL, Offutt MC, Buxton RB, Brady TJ (1986) Rapid 3D tracking of small rf coils.Abstracts SMRM Fifth Annual Meeting, Montreal, pp. 1131–1132.
Dumoulin CL, Souza SP, Darrow RD (1993) Real-time position monitoring of invasive devices using magnetic resonance.Magn Reson Med 29: 411–415.
Leung DA, Debatin JF, Wildermuth S, McKinnon GC, Holtz D, Dumoulin CL, Darrow RD, Hofmann E (1995) Intravascular MR tracking catheter: Preliminary experimental evaluation.AJR 164: 1265–1270.
Jackson JD (1975)Classical Electrodynamics 2nd edn. New York: John Wiley & Sons.
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Mckinnon, G.C., Debatin, J.F., Leung, D.A. et al. Towards active guidewire visualization in interventional magnetic resonance imaging. MAGMA 4, 13–18 (1996). https://doi.org/10.1007/BF01759775
- Interventional MRI
- device visualization
- straight-wire antennas