Background: Common Bile Duct Stones (CBDS) are one of the medical conditions leading to surgical intervention. They may occur in 3%-14.7% of all patients for whom cholecystectomies are performed. When patients present with CBD STONES, the one important question that should be answered: what is the best modality of treatment under the given conditions? There are competing technologies and approaches for diagnosing CBDS regarding diagnostic performance characteristics, technical success, safety, and cost effectiveness.