Journal of neuroimaging : official journal of the American Society of Neuroimaging
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Our institution serves a population of 160,000 and performed 14.4 endovascular cerebral aneurysm interventions annually, averaged over a 5-year period. The purpose of this study was to examine the safety and efficacy of endovascular treatment of cerebral aneurysms at a lowvolume center. ⋯ Endovascular coil embolization at a small volume nonspecialized community center is feasible with satisfactory procedural risk and clinical outcomes.
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The acquisition of literacy during childhood may affect the functional organization of the brain. We studied the effects of illiteracy on neuropsychological tests and brain glucose metabolism in later life. ⋯ These results suggest that reading and writing during childhood is associated with activation of the frontal pole that may play a critical role in complex aspects of human cognition.
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Case Reports
Potential role of PMD-TCD monitoring in the management of hemodynamically unstable intracranial stenosis.
A 54-year-old woman started to loose vision 2 days prior to admission and also experienced left-sided headache, nausea, emesis, and disorientation. Magnetic resonance imaging (MRI) revealed bilateral posterior cerebral artery and cerebellar infarctions. Transcranial power motion Doppler (PMD-TCD) showed blunted flow signal in the proximal basilar artery (BA) suggestive for a high-grade stenosis also seen on magnetic resonance angiography (MRA). ⋯ PMD-TCD findings were suggestive for an intraluminal thrombus that moved from the proximal to the distal basilar artery, presumably further contributing to brain stem hypoperfusion and neurological deterioration. To achieve a compromise between lower blood pressure and maintenance of brain perfusion, hypervolemic hemodilution with intravenous dextran-40 was initiated. Patient's symptoms resolved to baseline and MRI showed no new parenchymal lesions.
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To determine the proper method for the normalization of spinal cord volume. ⋯ Since normalization factor had limited impact on reliability and the ability to detect differences, normalization by the number of slices is recommended.