What Is the Diagnostic Accuracy of Magnetic Resonance Imaging for Acute Appendicitis?

The authors included 30 studies with 2,665 patients. Of these, 12 focused on pregnant patients and 8 focused on pediatric patients. There was variability in the MRI technique studied, although nearly all studies included a combination of multiplanar T2-weighted imaging with and without fat suppression. The overall prevalence of appendicitis in the 30 included studies was 33% (880/2,665 patients). The meta-analysis of the diagnostic accuracy of MRI for acute appendicitis yielded a sensitivity of 96% (95% confidence interval [CI] 95% to 97%) and specificity of 96% (95% CI 95% to 97%).

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