Computed Tomography (CT) imaging has increased substantially in the last two decades and has been identified as a significant driver of health care cots and increasing ionizing medical radiation exposure. Of CT imaging, Pulmonary CT angiography for suspected pulmonary embolism (PE) is of particular interest as preliminary studies suggest there is wide geographic variation in the utilization of CT for PE and that many of these tests are likely inappropriately ordered. While diagnostic yield studies have been performed for cardiac and abdominal CT imaging, little work has been done to describe the diagnostic yield of CT imaging for suspected PE in the emergency department (ED).
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