A high-resolution fast spin-echo inversion-recovery sequence for preoperative localization of the internal globus pallidus

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 Po were reviewed an d visualization of the GPi, globus pallidus externa (GPe), and the interven ing lamina was noted. High-resolution images were acquired from all patient s despite the external hardware and the patients' movement disorder. In all cases, the conventional surgical trajectory, determined indirectly by a fi xed measurement from the anteroposterior commissure line, was modified by t he ability to visualize the GPi and optic tract directly, This sequence fac ilitated accurate stereotactic targeting.