Radiology
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To determine the effect of sedative and anesthetic administration on the duration and costs of pediatric magnetic resonance (MR) imaging. ⋯ Visit durations were significantly longer for anesthetized and sedated patients. Anesthetized patients incurred the highest costs, followed by sedated patients.
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To measure the cerebral autoregulatory status of the brain tissue supplied by the individual brain-feeding arteries in patients with symptomatic stenosis of the internal carotid artery (ICA) by using arterial spin-labeling (ASL) magnetic resonance (MR) imaging and to compare this status with that in healthy controls. ⋯ In patients with symptomatic stenosis of the ICA, vasodilatory capacity in the flow territories of the major cerebral arteries can be visualized and quantified at the brain tissue level with ASL MR imaging.
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To investigate the clinical outcome in patients with a diagnosis of appendicitis at computed tomography (CT) in whom treatment is deemed unnecessary after clinical evaluation. ⋯ Five of 13 patients with CT findings of appendicitis and reassuring clinical evaluation results in whom immediate treatment was deferred ultimately returned with appendicitis. In patients with CT results positive for appendicitis and benign or atypical clinical findings, a diagnosis of chronic or recurrent appendicitis may be considered.