AJR. American journal of roentgenology
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The purpose of this article is to present and discuss the susceptibility-weighted imaging signal characteristics of the normal pediatric brain and those of a variety of pediatric brain pathologic abnormalities. ⋯ Its high susceptibility for blood products, iron depositions, and calcifications makes susceptibility-weighted imaging an important additional sequence for the diagnostic workup of pediatric brain pathologic abnormalities. Compared with conventional MRI sequences, susceptibility-weighted imaging may show lesions in better detail or with higher sensitivity. Familiarity with the pediatric susceptibility-weighted imaging signal variance is essential to prevent misdiagnosis.
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AJR Am J Roentgenol · May 2012
Locoregional chemoembolic delivery: prediction with transcatheter intraarterial perfusion MRI.
To our knowledge there is currently no quantitative preprocedural method for predicting the distribution and selectivity of delivery of chemoembolic material during trans-arterial chemoembolization. Transcatheter intraarterial perfusion MRI has been developed as a method of quantifying hepatic arterial perfusion. The purpose of this study was to investigate whether findings at transcatheter intraarterial perfusion MRI before chemoembolization can be used to predict uptake of the chemoembolic material delivered during chemoembolization. ⋯ Tumor perfusion measured with transcatheter intraarterial perfusion MRI is predictive of uptake of chemoembolic material before delivery. This MRI technique may have utility as a method of quantifying delivery of the therapeutic agent during chemoembolization and, potentially, other liver-directed locoregional therapies.
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AJR Am J Roentgenol · May 2012
Falls, older adults, and the trend in utilization of CT in a level I trauma center.
The purpose of this article is to evaluate the trend in the utilization of CT for fall victims older than 55 years admitted to a level I trauma center. ⋯ We quantified the increase in utilization rates of all types of CT scans for fall victims admitted to a level I trauma center. We found a marked increase in CT use over time, both for initial as well as repeat studies, and an association between CT use and variables such as sex. Future studies should focus on the evaluation of CT appropriateness and their influence on patient outcomes.