Radiology
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To investigate the relationship between iron staining and magnetic resonance (MR) imaging measurements in postmortem subjects with multiple sclerosis (MS). ⋯ All four MR imaging methods had significant linear correlations with iron and could potentially be used to determine iron status of subcortical gray matter structures in MS, with R2* mapping being preferred. A reliable method of determining iron status within MS lesions was not established.
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To evaluate the 15-year trend in the use of computed tomography (CT) in hospitalized pediatric trauma patients admitted to Harborview Medical Center (HMC) from 1996 to 2010. ⋯ A decreasing or unchanged trend was observed in CT usage in hospitalized pediatric trauma patients in recent years. © RSNA, 2013.
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Randomized Controlled Trial
Can neutrophil gelatinase-associated lipocalin help depict early contrast material-induced nephropathy?
To evaluate the utility of serum and urinary neutrophil gelatinase-associated lipocalin (NGAL) in depicting an event of contrast material-induced nephropathy (CIN) in patients who received iodinated contrast media, gadoterate meglumine, or radiopharmaceutical technetium-99m ((99m)Tc) and to evaluate the protective effect exerted by isotonic saline infusion, sodium bicarbonate administration, or N-acetylcysteine administration. ⋯ http://radiology.rsna.org/lookup/suppl/doi:10.1148/radiol.12120578/-/DC1.
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To determine the energy levels that provide optimal imaging of thoracic circulation at dual-energy computed tomographic (CT) angiography with reduced iodine load in comparison with a standard technique. ⋯ http://radiology.rsna.org/lookup/suppl/doi:10.1148/radiol.12120195/-/DC1.
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To evaluate whether quantitative diffusion-tensor tractography can show abnormalities in long association tracts of subjects with symptoms after traumatic brain injury without any visible signs of intracranial or intraparenchymal abnormalities of obvious traumatic origin at routine magnetic resonance (MR) imaging and to determine the number and type of these abnormalities. ⋯ http://radiology.rsna.org/lookup/suppl/doi:10.1148/radiol.12112570/-/DC1.