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. 1995 Nov;197(2):485-8.
doi: 10.1148/radiology.197.2.7480698.

Real-time biplanar needle tracking for interventional MR imaging procedures

D A Leung  1 , J F Debatin, S Wildermuth, N Heske, C L Dumoulin, R D Darrow, M Hauser, C P Davis, G K von Schulthess
Affiliations

Real-time biplanar needle tracking for interventional MR imaging procedures

D A Leung et al. Radiology. 1995 Nov.

Abstract

Purpose: To evaluate real-time biplanar tracking of a specially designed needle with magnetic resonance (MR) imaging guidance.

Materials and methods: The needle is made of polyetheretherketone and has a miniature radio-frequency coil incorporated into the tip. Tracking software on two workstations is used to compute three-dimensional coordinates of the coil and to display the position as a moving symbol in two imaging planes. Validation of needle tracking was performed in a harvested human liver. T2-weighted fast spin-echo images were used to target a 1-cm cyst. Success of needle placement was confirmed with aspiration and with updated gradient-recalled-echo images.

Results: The cyst was successfully targeted from different approaches. Tracking procedures were monitored in real time simultaneously on two separate images.

Conclusion: Real-time biplanar needle tracking may prove to be useful for both diagnostic and therapeutic interventional MR imaging procedures.

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