Neuroradiology
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The effect of fMRI task combinations on determining the hemispheric dominance of language functions.
The purpose of this study is to establish the most suitable combination of functional magnetic resonance imaging (fMRI) language tasks for clinical use in determining language dominance and to define the variability in laterality index (LI) and activation power between different combinations of language tasks. ⋯ A combination of auditory and visually presented tasks that activate different aspects of language functions with sufficient activation power may be a useful task battery for determining language dominance in patients.
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Comparative Study
Intracranial aneurysm coiling with PGLA-coated coils versus bare platinum coils: long-term anatomic follow-up.
The purpose of this study is to compare the long-term (≥12 months) angiographic follow-up of aneurysms treated with polymer polyglycolic-lactic acid (PGLA)-coated coils versus bare platinum coils. ⋯ PGLA-coated coils provided no better long-term recanalization rates than bare platinum coils.
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Perimedullary arteriovenous fistula (AVF) has shunt on the spinal cord surface and it can be treated with surgery, or endovascular embolization. Intramedullary arteriovenous malformation (AVM) has its nidus in the cord and is difficult to treat either by surgery or endovascular technique. We report our experience with endovascular embolization in the treatment of perimedullary AVF and intramedullary AVM. ⋯ Perimedullary AVF and intramedullary AVM are dissimilar with dural AVF in clinical characteristics. Our experience suggests that the endovascular treatment of spine perimedullary AVFs and intramedullary AVMs is feasible and effective. Endovascular treatment for intramedullary AVMs is still challenging, the main problem is acute ischemia injury of the spinal cord.
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The purpose of this study was to evaluate the safety and efficacy of the recently available flow diverter "pipeline embolization device" (PED) for the treatment of intracranial aneurysms and dissections. ⋯ Our experience reveals that the PED procedure is technically straightforward for the treatment of selected wide-necked saccular aneurysms, fusiform aneurysms, remnants of aneurysms, aneurysms with a high likelihood of failure with conventional endovascular techniques, and dissected vessels. While vessel reconstruction, performed after dissection, is achieved within days, remodeling of aneurysmal dilatations may take several months. Dual platelet inhibition is obligatory. Parenchymal bleeding into brain areas dependent on the target vessel is uncommon.