Academic radiology
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Quantitative regional measurement of physiological parameters of lung may improve both early detection of asthma and its response to treatment by elucidating the characteristics of airway obstruction. Recent emergence of hyperpolarized helium-3 magnetic resonance imaging as a sensitive pulmonary imaging tool has shown great potential in capturing important structural and functional aspects of normal and diseased lungs. The objective of this study was to investigate regional ventilation changes in the mouse lung following allergen sensitization and challenge. ⋯ Further development of this technique can potentially serve as a quantitative marker to investigate the physiology of allergen-induced airway hyperresponsiveness and to assist in disease treatment and prevention.
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An image registration method was developed to automatically correct motion artifacts, mostly from breathing, from cardiac cine magnetic resonance (MR) images. ⋯ The novel method was capable of robustly and accurately correcting motion artifacts from cardiac cine MR images.
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The purpose of this project was to further understand the academic radiologist's clinical workload with comparison to the prior studies in the past decade. This updated data is very important in determining faculty staffing requirements. ⋯ Clinical workload as measured by RVU/FTE and adjusted RVU/FTE are very useful for determining optimal staffing in subspecialty sections and in the department as a whole. The workload continues to increase, but more in examination complexity than in numbers of procedures overall.
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Comparative Study
Accuracy of computed tomography attenuation values in the characterization of pleural fluid: an ROC study.
To assess the accuracy of computed tomography (CT) in characterizing pleural fluid based on attenuation values. ⋯ Although the mean attenuation of exudates is significantly higher than transudates, the clinical use of CT numbers to characterize pleural fluid is not recommended, as their accuracy is only moderate. Moreover, there is a notable overlap in attenuation values between transudates and exudates for a majority of effusions.