Journal of neuroimaging : official journal of the American Society of Neuroimaging
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Collateral flow augmentation using partial aortic occlusion may improve cerebral perfusion in acute stroke. We assessed the effect of partial aortic occlusion on arterial flow velocities of acute stroke patients. ⋯ TCD monitoring of patients treated with IABI may help in predicting outcome in this novel device.
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Case Reports
Cerebral embolus following chiropractic manipulation in a patient with a calcified carotid artery.
Dissection of the cervicocranial vessels is the principal cause of ischemic brain injury following cervical spinal manipulation. Cervical spinal manipulation leading to cerebral embolus in the absence of dissection is not described in the literature. Current case documents cerebral embolism originating from extensively calcified internal carotid artery immediately following cervical spinal manipulation in the absence of dissection. ⋯ Calcified carotid artery may be at risk for embolization following cervical spinal manipulation. Our recommendation is that, patients with extensively calcified carotid arteries should refrain from aggressive neck maneuvers and cervical spine manipulation therapy to avoid liberation of cerebral embolus.
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Distal hyperintense vessels (DHV) on MRI FLAIR sequences in acute brain ischemia are thought to represent leptomeningeal collateral flow. We hypothesized that DHV are more common in acute stroke patients with perfusion-diffusion weighted mismatch (PDM) than in those without. ⋯ DHV may be a surrogate marker for PDM in patients with hyperacute ischemic stroke.
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The Cavum Septi Pellucidi (CSP), Cavum Vergae (CV) and Cavum Veli Interpositi, are anatomical variants located in the midline of the brain. It is important to identify these conditions to distinguish them from other entities that may require treatment. In this paper, our purpose is to describe MR and CT findings of CSP, CV and Cavum Veli Interpositi, explaining the differential diagnosis.
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Dural arteriovenous fistula (DAVF) of the anterior condylar canal is a rare subgroup of posterior fossa DAVF. Successful treatment of this DAVF requires an accurate image diagnosis and the knowledge of the anatomy of the anterior condylar confluent. We present the imaging features of angiography and MR angiography of a 54-year-old man, who presented progressive right synchronous tinnitus due to a DAVF of the anterior condylar confluent, successfully treated by transvenous embolization.