Towards active guidewire visualization in interventional magnetic resonance imaging

Publication

Towards active guidewire visualization in interventional magnetic resonance imaging

Journal Paper/Review - Mar 1, 1996

McKinnon G C, Debatin J F, Leung D A, Wildermuth Simon, Holtz D J, von Schulthess G K

Units

Radiologie und Nuklearmedizin

PubMed

8773997

Citation

McKinnon G, Debatin J, Leung D, Wildermuth S, Holtz D, von Schulthess G. Towards active guidewire visualization in interventional magnetic resonance imaging. Magma (New York, N.Y.) 1996; 4:13-8.

Type

Journal Paper/Review (English)

Journal

Magma (New York, N.Y.) 1996; 4

Publication Date

Mar 1, 1996

Issn Print

0968-5243

Pages

13-8

Brief description/objective

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.