What is the best imaging for suspected cholecystitis?
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Radionuclide scanning has slightly higher sensitivity and specificity than abdominal ultrasound. (SOR: A, based on meta-analyses.) However, ultrasound is the preferred initial test because it is readily available, does not use radiation or contrast dye, and provides a reasonable view of the anatomy of the upper abdomen. (SOR: C, based on expert opinion.)
Evidence-based practice 15, no. 03 (2012): 08-09