Objective: This study assessed the effectiveness of laparoscopic ultrasonography during laparoscopic cholecystectomy 
Method: From Jan. (2000) to May (2001), ninety patients treated by laparoscopic cholecystectomy were included in a 
prospective study using laparoscopic ultrasonography during laparoscopic cholecystectomy. 
Results: The feasibility of laparoscopic ultrasonography was 98.9 % with full visualization in 90% and time taken for 
laparoscopic ultrasonography was 8.5 min. Variations in the anatomy of bile ducts was observed in 25.5% while vascular 
variations were seen in 30% of cases. Lastly the sensitivity, specificity, and accuracy to detect common bile duct stones were 80%, 98%, and 97.2% respectively. 
Conclusion: Laparoscopic ultrasonography proves safe, effective, repeatable, and non invasive method to detect 
vascular anomalies, bile duct anomalies, and ductal stones during laparoscopic cholecystectomy