Diagnostic Imaging in Emergency Medicine: How Much Is Too Much?

Few topics are as pertinent to the current emergency medicine climate as the debate surrounding the overuse of diagnostic imaging. Use of advanced diagnostic imaging has increased in the United States exponentially since the advent of computed tomography (CT) and magnetic resonance imaging (MRI). CT use has increased from 3 million scans in 1980 to greater than 60 million in 2005, and is still increasing.1 Although this growth stretches across the care continuum, it includes the emergency department (ED).

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