Stereotactic and functional neurosurgery
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Stereotact Funct Neurosurg · Jan 2009
Subthalamic nucleus stimulation does not cause deterioration of preexisting hallucinations in Parkinson's disease patients.
Among the neuropsychiatric symptoms in Parkinson's disease (PD) patients, hallucination can result from the disease itself or medical treatment. Hallucination associated with subthalamic nucleus stimulation (STN-DBS) has been reported; however, it is still unclear whether PD patients with a history of hallucination are appropriate candidates for STN-DBS or not. ⋯ Our findings indicate that STN-DBS surgery does not always lead to deterioration of preexisting hallucination in PD. In advanced PD, hallucination involves a multifactorial pathogenesis and a history of hallucination is not a contraindication to STN-DBS surgery.
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Stereotact Funct Neurosurg · Jan 2009
Clinical TrialSpectral analysis of field potential recordings by deep brain stimulation electrode for localization of subthalamic nucleus in patients with Parkinson's disease.
Spectral analysis of local field potential (LFP) recorded by deep brain stimulation (DBS) electrode around the subthalamic nucleus (STN) in patients with Parkinson's disease was performed. ⋯ A spectral power analysis of LFP recording by DBS electrode helps with the final confirmation of the dorsal and ventral borders of the STN of Parkinson's disease in DBS implantation surgery.
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Stereotact Funct Neurosurg · Jan 2009
ReviewHistoric evolution of open cingulectomy and stereotactic cingulotomy in the management of medically intractable psychiatric disorders, pain and drug addiction.
Stereotactic cingulotomy constitutes a psychosurgical procedure nowadays advocated in the treatment of medically intractable obsessive-compulsive disorder, chronic pain and drug addiction. From its theoretical conception to the first cingulectomies performed and modern stereotactic-guided cingulotomies, various target localization methods, different surgical techniques, and numerous lesioning devices have been utilized. In the current article, the authors performed a literature review related to cingular lesion placement in an effort to identify misconceptions of the past, recapitulate existing knowledge and recognize targets for further research. ⋯ The anatomic target localization methodologies, surgical technique, and the outcome of the initial stereotactic cingulotomy procedures were reviewed, and the evolution of the imaging techniques, stereotactic devices, and lesioning strategies were followed. The modern advanced surgical techniques, clinical outcome and the procedure-associated complications were analyzed with particular emphasis on the emotional, behavioral, and cognitive procedure-induced changes. Large-scale prospective studies with strict inclusion and well-defined, objective outcome criteria are necessary for defining the role of stereotactic cingulotomy in the current psychosurgical armamentarium.
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Stereotact Funct Neurosurg · Jan 2009
CT/MR image fusion in the postoperative assessment of electrodes implanted for deep brain stimulation.
Stereotactic postoperative imaging is essential for verification of the position of electrodes implanted for deep brain stimulation (DBS). MRI offers superior visualisation of the DBS targets relative to CT, but previous adverse incidents have heightened concerns about risks of postoperative MRI. Preoperative MRI fused with postoperative CT offers an alternative method for evaluating electrode position, but before this method can be clinically applied, the image registration accuracy must be established. The purpose of this study was to quantitatively assess the accuracy of three different image registration and fusion methods. ⋯ CT/MRI fusion provides a safe, practical technique for postoperative identification of DBS electrodes.
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Stereotact Funct Neurosurg · Jan 2009
Case ReportsSimultaneous use of functional tractography, neuronavigation-integrated subcortical white matter stimulation and intraoperative magnetic resonance imaging in glioma surgery: technical note.
The importance of preserving function during glioma surgery cannot be overemphasized. There are a number of techniques utilized including functional MRI, direct electrophysiological monitoring and functional neuronavigation to maximize and safely resect gliomas. ⋯ Combining these technologies will enhance the safety and efficacy of glioma surgery. This is the first report in the literature where we successfully combine both functional neuronavigation and subcortical stimulation, using a single probe to safely resect a recurrent glioblastoma.