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• W2032234847 abstract "Abstract Stereotaxic ventral pallidotomy has been employed in the symptomatic treatment of patients with advanced Parkinson's disease (PD). To understand the pathophysiology of clinical outcome following this procedure, we studied 10 PD patients (5 men and 5 women; mean age, 60.0 ± 6.1 years; mean Hoehn and Yahr stage, 3.8 ± 1.0) with quantitative F‐fluorodeoxyglucose (FDG) and positron emission tomography (PET). All patients were scanned preoperatively; 8 of 10 patients were rescanned 6 to 8 months following surgery. Clinical performance was assessed off medications before and after surgery using standardized timed motor tasks. We found that preoperative lentiform metabolism correlated significantly with improvement in contralateral motor scores at 1 week, 3 months, and 6 months following unilateral pallidotomy (p<0.03). Postoperatively, significant metabolic increases were noted in the primary motor cortex, lateral premotor cortex, and dorsolateral prefrontal cortex ( p <0.01) of the hemisphere that underwent surgery. Improvement in contralateral limb motor performance correlated significantly with surgical declines in thalamic metabolism ( p <0.01) and increases in lateral frontal metabolism ( p < 0.05). Principal components analysis disclosed a significant covariance pattern characterized by postoperative declines in ipsilateral lentiform and thalamic metabolism associated with bilateral increases in supplementary motor control metabolism. Subject scores for this pattern correlated significantly with improvements in both contralateral and ipsilateral limb performance ( p <0.0005). These results suggest that pallidotomy reduced the preoperative overaction of the inhibitory pallidothalamic projection. Clinical improvement may be associated with modulations in regional brain metabolism occurring remote from the lesion site." @default.
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• W2032234847 date "1996-04-01" @default.
• W2032234847 modified "2023-09-29" @default.
• W2032234847 title "Regional metabolic correlates of surgical outcomes following unilateral pallidotomy for parkinson's disease" @default.
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• W2032234847 doi "https://doi.org/10.1002/ana.410390407" @default.
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