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American Journal of Neuroradiology 24:626-629, April 2003
© 2003 American Society of Neuroradiology

Technical Note
INTERVENTIONAL

MR-Guided Catheter Navigation of the Intracranial Subarachnoid Space

George Rapparda, Gregory J. Metzgerf, James L. Fleckensteina, Evelyn E. Babcockc, Paul T. Weatherallb, Robert E. Reploglea,d, G. Lee Pride, Jra, Susan L. Millere, Christina E. Adamse and Phillip D. Purdya,d,e

a Department of Radiology, Division of Neuroradiology, the University of Texas Southwestern Medical Center at Dallas
b Department of Radiology, the University of Texas Southwestern Medical Center at Dallas
c Division of Medical Physics, the University of Texas Southwestern Medical Center at Dallas
d Department of Neurological Surgery, the University of Texas Southwestern Medical Center at Dallas
e Mobility Foundation Center, the University of Texas Southwestern Medical Center at Dallas
f Philips Medical Systems, Best, the Netherlands

Address reprint requests to George Rappard, MD, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390-8896

Summary: Percutaneous intraspinal navigation (PIN) is a new minimally invasive approach to the CNS. The authors studied the utility of MR-guided intracranial navigation following access to the subarachnoid compartment via PIN. The passive tracking technique was employed to visualize devices during intracranial navigation. Under steady-state free precession (SSFP) MR-guidance a microcatheter-microguidewire was successfully navigated to multiple brain foci in two cadavers. SSFP MR fluoroscopy possesses adequate contrast and temporal resolution to allow MR-guided intracranial navigation.




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