Published in:
01-01-2010 | Original Article
Predictive potential of pre-operative functional neuroimaging in patients treated with subthalamic stimulation
Authors:
Stelvio Sestini, Alberto Pupi, Franco Ammannati, Silvia Ramat, Sandro Sorbi, Roberto Sciagrà, Luigi Mansi, Antonio Castagnoli
Published in:
European Journal of Nuclear Medicine and Molecular Imaging
|
Issue 1/2010
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Abstract
Purpose
The aim of this study was to investigate the predictive potential of pre-operative regional cerebral blood flow (rCBF) in the pre-supplementary motor area (pre-SMA) and clinical factors in Parkinson’s disease (PD) patients treated with subthalamic nucleus (STN) stimulation.
Methods
Ten patients underwent rCBF SPECT and motor Unified Parkinson’s Disease Rating Scale (UPDRS) pre- and post-operatively during stimulation at 5 and 42 months. Statistical parametric mapping (SPM) was used to extract rCBF values in the pre-SMA because it is related with motor improvement. Post-operative outcomes included motor response to stimulation and percent improvement in UPDRS. Pre-operative predictors were explored by correlation test, linear regression and multivariate analyses.
Results
Higher pre-operative rCBF in the pre-SMA and younger age were associated with favourable outcomes at 5 and 42 months. Pre-operative rCBF results were significantly associated with baseline clinical factors.
Conclusion
This study shows that PD patients with younger age have higher rCBF values in the pre-SMA and better outcome, thus giving the rationale to the hypothesis that STN stimulation could be considered early in the course of disease.