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AJNR Am J Neuroradiol. 2003 Apr;24(4):626-9.

MR-guided catheter navigation of the intracranial subarachnoid space.

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Department of Radiology, Division of Neuroradiology, the University of Texas Southwestern Medical Center at Dallas, USA.


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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