Which imaging modality is the best to diagnose acute cholecystitis?
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Which imaging modality is the best to diagnose acute cholecystitis? Evidence-Based Answer: Hepatobiliary 99mTc-iminodiacetic acid scan (HIDA scan or cholescintigraphy) is more sensitive (86%–96%) than ultrasound (48%–81%) or MRI (85%) for diagnosing acute cholecystitis. In patients with right upper quadrant (RUQ) pain and a negative ultrasound, follow-up HIDA scanning improves the diagnosis rate (SOR: B, based on a meta-analysis of diagnosis trials and retrospective trials).
Evidence Based Practice 17(5): E-2