Radiology
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To compare quantitative cerebral blood flow (CBF) values in patients with Alzheimer disease (AD), patients with mild cognitive impairment (MCI), and subjects with subjective complaints by using a whole-brain three-dimensional (3D) pseudocontinuous arterial spin-labeling (ASL) technique at 3.0 T. ⋯ CBF measured with 3D pseudocontinuous ASL MR imaging helps detect functional changes in the prodromal and more advanced stages of AD and is a marker for disease severity.
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Contrast material-induced nephrotoxicity and intravenous low-osmolality iodinated contrast material.
To determine whether intravenous low-osmolality iodinated contrast material is associated with post-computed tomography (CT) acute kidney injury (AKI). ⋯ Intravenous low-osmolality iodinated contrast material is a nephrotoxic risk factor, but not in patients with a stable SCr level less than 1.5 mg/dL. Many factors other than contrast material can affect post-CT AKI rates.
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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 (a) use a new second-generation wide-volume 320-detector row computed tomographic (CT) scanner to explore optimization of radiation exposure in coronary CT angiography in an unselected and consecutive cohort of patients referred for clinical purposes and (b) compare estimated radiation exposure and image quality with that from a cohort of similar patients who underwent imaging with a previous first-generation CT system. ⋯ http://radiology.rsna.org/lookup/suppl/doi:10.1148/radiol.13122621/-/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.