Journal of neuroimaging : official journal of the American Society of Neuroimaging
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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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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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Though diffusion-weighted (DW) magnetic resonance imaging (MRI) is useful for diagnosing many pathologies, its use in infectious spondylodiscitis is unclear. We aimed to evaluate the use of DW MRI and apparent diffusion coefficient (ADC) mapping for the diagnosis of infectious spondylodiscitis. ⋯ These data suggest that DWI/ADC MRI may be useful in the early diagnosis of infectious spondylodiscitis.
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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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This functional MRI study was designed to describe activated fiber topography and trajectories in the corpus callosum (CC) of six patients carrying different degree of partial callosal resection. ⋯ Present data show that interhemispheric fibers linking sensory areas crossed through the CC at the sites where the different sensory stimuli evoked activation foci, and that topography of callosal foci evoked by sensory stimulation in spared CC portions is consistent with that previously observed in subjects with intact CC.