Towards active guidewire visualization in interventional magnetic resonance imaging

Publikation

Towards active guidewire visualization in interventional magnetic resonance imaging

Wissenschaftlicher Artikel/Review - 01.03.1996

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

Bereiche

Radiologie und Nuklearmedizin

PubMed

8773997

Zitation

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.

Art

Wissenschaftlicher Artikel/Review (Englisch)

Zeitschrift

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

Veröffentlichungsdatum

01.03.1996

ISSN (Druck)

0968-5243

Seiten

13-8

Kurzbeschreibung/Zielsetzung

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.