Journal of neuroimaging : official journal of the American Society of Neuroimaging
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Studies have demonstrated that computed tomography (CT) angiography source images (CTA-SI) acquired under near-steady-state contrast concentration provide infarct core estimates equivalent to diffusion-weighted images (DWI). We sought to test this relationship using our current CTA protocol optimized for faster scan acquisition. ⋯ CTA-SI performed using a fast-acquisition protocol overestimates the infarct core on DWI. Substantial differences are observed in over 25% of cases, and are associated with reduced collateralization.
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Limited data exist regarding the long-term clinical and angiographic outcomes of patients with spontaneous cervico-cranial arterial dissection treated with stent placement. ⋯ This study demonstrates the feasibility, safety, and intermediate term effectiveness of endovascular stent reconstruction of spontaneous, cervico-cranial arterial dissection.
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Case Reports
Alterations in surgical plan based on intraoperative portable head computed tomography imaging.
Intraoperative imaging offers potential for utility in many clinical scenarios. Portable computed tomography (CT) offers a versatile potential alternative when immediate imaging may alter the surgical plan and magnetic resonance imaging is not practical. ⋯ In select cases, intraoperative portable head CT leads to changes in the surgical plan in 32% of cases. This potentially prevents a return to the operating room and offers a cost-effective alternative to fixed intraoperative imaging facilities.
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Comparative Study
Determination of language dominance: Wada test and fMRI compared using a novel sentence task.
This study aimed to develop a new linguistic based functional magnetic resonance imaging (fMRI)-sentence decision task that reliably detects hemispheric language dominance. ⋯ The sentence task provides robust activations in putative essential language areas and can be used for visual analysis of predefined areas to facilitate interpretation of clinical fMRI.
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Case Reports
Brain imaging in cerebellar ataxia associated with autoimmune polyglandular syndrome type 2.
Autoimmune polyglandular syndrome (APS) type 2 (Schmidt syndrome) is a disorder characterized by a combination of autoimmune adrenal insufficiency, autoimmune thyroid disease, and type 1 autoimmune diabetes mellitus. We describe the first case of subacute cerebellar syndrome associated with APS type 2. ⋯ Magnetic resonance spectroscopy showed decreased N-acetylaspartate/creatine ratio in the cerebellum and in the pons. Our findings expand the spectrum of neurological deficits in APS type 2 and underlines that cerebellar pathways may be a main target of the disorder.