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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 21:928-931 (5 2000)
© 2000 American Society of Neuroradiology

ARTICLE

A High-resolution Fast Spin-echo Inversion-recovery Sequence for Preoperative Localization of the Internal Globus Pallidus

Caroline A. Reich^a, Patricia A. Hudgins^,a, Scott K. Sheppard^a, Philip A. Starr^a and Roy A.E. Bakay^a

^a From the Greystone Imaging Center, University of Birmingham, Alabama; the Departments of Radiology (P.A.H.) and Neurosurgery (R.A.E.B.), Emory University School of Medicine, Atlanta; Philips Medical Systems (S.K.S.); and the Department of Neurosurgery (P.A.S.), University of California, San Francisco.

Summary: A fast spin-echo inversion-recovery (FSE-IR) sequence is described for its utility regarding surgical planning for patients with Parkinson's disease (PD) who are undergoing microelectrode-guided internal globus pallidus (GPi) ablation. Images from thirty-seven adult patients with PD were reviewed and visualization of the GPi, globus pallidus externa (GPe), and the intervening lamina was noted. High-resolution images were acquired from all patients despite the external hardware and the patients' movement disorder. In all cases, the conventional surgical trajectory, determined indirectly by a fixed measurement from the anteroposterior commissure line, was modified by the ability to visualize the GPi and optic tract directly. This sequence facilitated accurate stereotactic targeting.

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