Journal of neuroimaging : official journal of the American Society of Neuroimaging
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Venous congestive encephalopathy is a rare complication of central venous occlusion in hemodialysis patients with upper extremity dialysis created shunts. We describe the clinical presentation and endovascular management of an end-stage renal disease patient with a left upper extremity arteriovenous graft who developed intracranial venous hypertension, left-sided subdural and subarachnoid intracranial hemorrhage, and left-sided cerebral infarcts related to a left brachiocephalic vein occlusion.
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Comparative Study
Carotid MRI Detection of Intraplaque Hemorrhage at 3T and 1.5T.
Carotid intraplaque hemorrhage leads to plaque progression and ischemic events. Detection can be accomplished with 3T T1w sequences, but may be limited by false-positive lipid/necrosis. The purpose of this study was threefold: (1) to determine if magnetization-prepared rapid acquisition with gradient-echo (MPRAGE) detects intraplaque hemorrhage versus lipid/necrosis; (2) if 3T MPRAGE image quality is retained at 1.5T; and (3) to determine observer agreement. ⋯ Carotid MPRAGE detects intraplaque hemorrhage, not lipid/necrosis. 3T image quality was retained at 1.5T with very good observer agreement.
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Observational Study
Diagnostic and Prognostic Impact of pc-ASPECTS Applied to Perfusion CT in the Basilar Artery International Cooperation Study.
The posterior circulation Acute Stroke Prognosis Early CT Score (pc-APECTS) applied to CT angiography source images (CTA-SI) predicts the functional outcome of patients in the Basilar Artery International Cooperation Study (BASICS). We assessed the diagnostic and prognostic impact of pc-ASPECTS applied to perfusion CT (CTP) in the BASICS registry population. ⋯ CTP was performed in a minority of the BASICS registry population. Perfusion disturbances in the posterior circulation were most pronounced on MTT parameter maps. CBV pc-ASPECTS < 8 may indicate patients with high case fatality.
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To develop a qualitative brain magnetic resonance imaging (MRI) scoring system for comatose cardiac arrest patients that can be used in clinical practice. ⋯ A qualitative MRI scoring system helps assess hypoxic-ischemic brain injury severity following cardiac arrest and may provide useful prognostic information in comatose cardiac arrest patients.
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Observational Study
Vascular imaging before intravenous thrombolysis: consequences of in-hospital delay in applying two diagnostic procedures.
Vascular imaging is increasingly used for diagnosis of arterial occlusions in acute ischemic stroke (AIS) patients. Our aim was to determine whether computed tomography angiography (CTA) and Doppler/duplex ultrasound (DUS) before intravenous thrombolysis (IVT) is associated with a delay in time-to-treatment. ⋯ Performing CTA before IVT seems to increase door-to-needle time. Vascular imaging based on DUS should be considered only if this does not lead to in-hospital delay.