Acta neurochirurgica. Supplement
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Acta Neurochir. Suppl. · Jan 2003
Influence of 1.5-Tesla intraoperative MR imaging on surgical decision making.
To determine the frequency that high-field magnetic resonance (MR) imaging sequences influenced surgical decision making during intraoperative MR-guided surgery. From January 1997 to February 2001, 346 MR-guided procedures were performed using a 1.5-Tesla MR system (NT-ACS, Philips Medical Systems). This system can perform functional MR imaging (fMRI), diffusion weighted imaging (DWI), MR spectroscopy (MRS), MR angiography (MRA), and MR venography (MRV) in addition to T1-weighted, T2-weighted, and turbo FLAIR (fluid-attenuated inversion recovery) imaging. ⋯ MRA and MRV were performed in 3 (3%) and 2 (2%) of tumor resections, respectively. The imaging capabilities (i.e., fMRI, DWI, MRA, MRV) associated with high-field intraoperative MR influenced surgical decision making primarily for tumor resections. MRS influenced target selection during brain biopsy.
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Diaphragm pacing with electrical stimulation of the phrenic nerve is an established treatment for central hypoventilation syndrome. The device, however, is not readily available, at least, in Japan. We applied the spinal cord stimulator for pain control to phrenic nerve stimulation. The purpose of this study is to evaluate the efficacy and feasibility of phrenic pacing with the compromise method. ⋯ Although longer follow-up is necessary, diaphragm pacing with the spinal cord stimulator is feasible for treatment of central hypoventilation syndrome.
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Acta Neurochir. Suppl. · Jan 2003
ReviewClinical application of drug pump for spasticity, pain, and restorative neurosurgery: other clinical applications of intrathecal baclofen.
Intrathecal baclofen has been successfully used for control of severe spasticity. Baclofen, an agonist of GABA-B receptor, has other potential effects on pain and recovery from coma. Sporadic episodes of dramatic recovery from persistent vegetative state are reported after intrathecal administration of baclofen. ⋯ On the other hand, epidural spinal cord stimulation has been used for pain, spasticity, dystonia, or attempt to improve deteriorated consciousness, though the effects seem variable and modest. Similarity between baclofen and spinal cord stimulation is interesting in that both involves in spinal GABAergic system. The GABAergic system in the spinal cord plays a pivotal role in various clinical effects of these procedures.
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Acta Neurochir. Suppl. · Jan 2003
Clinical TrialChronic stimulation of the globus pallidus internus for control of primary generalized dystonia.
Our experience of deep brain stimulation of the globus pallidus internus (GPi-DBS) for dystonia is summarized. A total of 5 patients with primary generalized dystonia underwent GPi-DBS. There were 3 males and 2 females. ⋯ At 6 months after surgery, all patients were receiving bipolar stimulation with a wide interpolar distance, using contact 0 or 1 as the cathode and contact 2 or 3 as the anode. Stimulation was being performed at an intensity of around 2.0 V with a pulse width of 0.21 ms at a high frequency ranging from 120 to 140 Hz. GPi-DBS represents an important therapeutic option in many patients with primary generalized dystonia.
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Acta Neurochir. Suppl. · Jan 2003
ReviewNew development of functional neurorehabilitation in neurosurgery.
Today, increasingly more patients with severe brain and spinal cord lesions mainly secondary to accidents, violence, stroke, and tumours survive their injuries, in many cases, however, suffering from severe functional impairments of functioning as described by the WHO-ICF criteria. New developments of functional neurorehabilitation in neurosurgery could significantly improve the patients' quality of life (QoL) in terms of brain and body functioning and certain health-related components of well-being (such as social activities and leisure). ⋯ Progress in the fields of microelectronics, computer technology, and genetic engineering along with rehabilitation science is opening up a new field of unknown chances to partially restore lost body functions and to help improve the quality of life of disabled patients in the sense of ICF. Functional neurosurgery plays a major role in neurosurgical rehabilitation. e.g. functional electrostimulation, brain-stem implants, pain and epilepsy control, restoration of locomotion and grasp faculties, and the use of potent substances such as botulinum toxin (Btx). This demands the capacity of time work and the realization of the necessity to draw up a detailed plan for the restoration of impaired functions prior to enacting a neurosurgical intervention in the sense of a complex neurorehabilitation, and consequently to assume the responsibility for the patient's outcome. From the beginning of neurological surgery, the preservation and restoration of impaired brain and spinal-cord functions as an original task for neurosurgeons demand their involvement with issues of functional neurorehabilitation including neurosurgical re-engineering of the damaged brain and spinal cord. In this connection the close and trusting cooperation with the clinical neuropsychologist from the very outset is an indispensible factor.