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Use of computed tomography (CT) for diagnosing suspected acute appendicitis rose from approximately 20% in 2000 to >90% in 2006. However, few researchers have examined the diagnostic performance of multidetector CT (MDCT) for this purpose. To assess diagnostic performance, researchers enrolled more than 2800 consecutive adults from a single academic institution in Wisconsin who were referred for MDCT (from 2000 through 2009) to evaluate suspected acute appendicitis. Surgical pathology and intraoperative findings were used to determine whether patients had acute appendicitis; patients were followed for a minimum of 12 months to determine the presence of acute appendicitis in those who did not undergo surgery.
The overall prevalence of acute a…