Stereotactic and functional neurosurgery
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Stereotact Funct Neurosurg · Jan 2014
Variation in deep brain stimulation electrode impedance over years following electrode implantation.
Deep brain stimulation (DBS) electrode impedance is a major determinant of current delivery to target tissues, but long-term variation in impedance has received little attention. ⋯ Impedance decreases gradually in a stimulation-dependent manner. These trends have implications for long-term programming, the development of a closed-loop DBS device and current understanding of the electrode-tissue interface.
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Stereotact Funct Neurosurg · Jan 2014
Single-institution retrospective series of gamma knife radiosurgery in the treatment of multiple sclerosis-related trigeminal neuralgia: factors that predict efficacy.
Gamma knife radiosurgery (GKRS) has been reported as a treatment option for multiple sclerosis (MS)-related trigeminal neuralgia. ⋯ GKRS is a viable noninvasive treatment option for MS-related trigeminal neuralgia.
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Stereotact Funct Neurosurg · Jan 2014
Impact of preoperative functional magnetic resonance imaging during awake craniotomy procedures for intraoperative guidance and complication avoidance.
We wanted to study the role of functional MRI (fMRI) in preventing neurological injury in awake craniotomy patients as this has not been previously studied. ⋯ The routine use of fMRI was not useful in identifying language sites as performed and, more importantly, practiced tasks failed to prevent neurological deficits following awake craniotomy procedures.
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Stereotact Funct Neurosurg · Jan 2014
Case Reports Comparative StudyDeep brain stimulation for obsessive-compulsive disorder: is the side relevant?
Deep brain stimulation for obsessive-compulsive disorder (OCD) has targeted several subcortical nuclei, including the subthalamic nucleus (STN) and the nucleus accumbens. While the most appropriate target is still being looked for, little attention has been given to the side of the stimulated hemisphere in relationship to outcome. ⋯ Some reports suggest that lesion stimulation or stimulation of only the right side relieves OCD symptoms. However, anatomical and functional studies are not conclusive as to which side is most affected in OCD. Possibly, each OCD patient has an individualized optimal side to stimulate.
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Stereotact Funct Neurosurg · Jan 2014
Clinical TrialSimultaneous trial of deep brain and motor cortex stimulation in chronic intractable neuropathic pain.
Both motor cortex stimulation (MCS) and deep brain stimulation (DBS) of the ventralis caudalis (Vc) thalamus have been shown to be effective in chronic neuropathic pain, and the modulation of thalamic and thalamocortical activity is regarded as a possible mechanism. Although Vc DBS and MCS have a common analgesic mechanism, the application of MCS and DBS is still considered empirical, and there is no consensus on which method is better. ⋯ Considering the initial success rate and the less invasive nature of epidural MCS compared with DBS, we think that MCS would be a more reasonable initial means of treatment for chronic intractable neuropathic pain.