Real-time biplanar needle tracking for interventional MR imaging procedures.
| Autor: | Leung DA; Department of Radiology, Zürich University Hospital, Switzerland., Debatin JF, Wildermuth S, Heske N, Dumoulin CL, Darrow RD, Hauser M, Davis CP, von Schulthess GK |
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| Jazyk: | angličtina |
| Zdroj: | Radiology [Radiology] 1995 Nov; Vol. 197 (2), pp. 485-8. |
| DOI: | 10.1148/radiology.197.2.7480698 |
| Abstrakt: | 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. |
| Databáze: | MEDLINE |
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