Journal of neuroimaging : official journal of the American Society of Neuroimaging
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Using functional magnetic resonance imaging (fMRI), we explored cortical activation in patients with acute Bell's palsy (BP) and analyzed its correlates with clinical status in the acute phase, and with 6-month outcome. ⋯ In patients with BP, fMRI may represent a useful tool to predict long-term outcome, guide therapeutic approach, and monitor treatment response.
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Radial artery catheterization has been newly incorporated into the field of endovascular surgical neuroradiology as a safer and more efficient method for Cerebral angiography as opposed to the femoral artery approach. The objective is to understand the relationship between cerebral angiography procedure times after an operator has converted to a radial first approach. ⋯ Transradial procedural time and fluoroscopy time continued to improve until about 55 cases, but did not reach the peak efficiency of the femoral approach. Further advances in catheter technology are needed to continue to improve radial artery diagnostic cerebral angiography.
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Review Meta Analysis
Prediction of Meningioma WHO Grade Using PET Findings: A Systematic Review and Meta-Analysis.
World Health Organization (WHO) grading of meningiomas reflects recurrence rate and prognosis. Positron emission tomography (PET) investigates metabolic activity, allowing for distinction between low- and high-grade tumors. As preoperative suspicion for malignant meningioma will influence surgical strategy in terms of timing, extent of resection, and risks taken to achieve a total resection, we systematically reviewed the literature on PET-imaging in meningiomas and relate these findings to histopathological analysis. ⋯ We found that SUV and T/N ratio in 18F-FDG PET may be useful to noninvasively differentiate benign from malignant meningiomas. T/N ratio seems to have a high specificity for the detection of high-grade meningiomas. Other PET tracers were studied too infrequently to draw definitive conclusions. Before treatment strategies can be adapted based on 18F-FDG PET, prospective studies in larger cohorts are warranted to validate the optimal T/N ratio cutoff point.
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To assess a 3D high-resolution IR-prepped fast SPGR high-resolution MRI sequence for evaluating hypoglossal nerve lesions. ⋯ Compared with conventional MRI, we show superior results from an advanced sequence to improve image quality in characterizing hypoglossal nerve lesions.
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Epilepsy is among one of the most common neurologic disorders. The role of magnetic resonance imaging (MRI) in the diagnosis and management of patients with epilepsy is well established, and most patients with epilepsy are likely to undergo at least one or more MRI examinations in the course of their disease. ⋯ Familiarity with normal anatomic variations is essential in the accurate diagnosis and image interpretation, as these variations may be mistaken for epileptogenic foci, leading to unnecessary follow-up imaging, or worse, unnecessary treatment. After a brief overview of normal imaging anatomy of the mesial temporal lobe, this article will review a few important common and uncommon anatomic variations, mimics, and pitfalls that may be encountered in the imaging evaluation of patients with epilepsy.