Summary of Medical Doctoral dissertatation: Study on the value of magnetic resonance imaging, laparoscopic surgery and cholangioscopic lithotripsy through choledocho - cutaneous channel in the treatment of main bile duct stones

To study the value of magnetic resonance imaging in the the diagnosis of main bile duct stones. To evaluate the results of laparoscopic surgery and cholangioscopic lithotripsy through choledocho-cutaneous channel in the treatment of main bile duct stones.