Quantitative cholescintigraphy: selection of random dose for CCK-33 and reproducibility of abnormal results.

Unlabelled: Dynamic cholescintigraphy (DCG) is a valid technique for evaluating gallbladder emptying. Cholecystokinin (CCK) as a slow infusion is recommended as a contraction stimulus. The normal ejection fraction (EF) has been shown to be reproducible, although the reproducibility of abnormal results has not been investigated.