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American Journal of Roentgenology, Vol 169, 863-867, Copyright © 1997 by American Roentgen Ray Society

ARTICLES

Real-time monitoring of laser diskectomies with a superconducting, open- configuration MR system

AW Schoenenberger, P Steiner, JF Debatin, K Zweifel, P Erhart, GK von Schulthess and J Hodler
Department of Medical Radiology, University Hospital Zurich, Switzerland.

OBJECTIVE: The objective of our study was to assess the ability of a 0.5-T superconducting, open-configuration MR system to guide laser diskectomies. The study was performed ex vivo on six human cadavers as well as in vivo on three patients. CONCLUSION: The macroscopic size of necrosis correlated well with the monitored temperature spread (r2 = .76-.85). After MR-guided introduction of the laser fiber into the targeted disk space, temperature spread was visualized in all subjects.
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