A patient with history of choledocholithiasis presents with elevated conjugated bilirubin. Ultrasound reveals a dilated biliary system upto the terminal pa. In case of suspicion of an ampullary obstructive calculus which of the following investigations would be most sensitive?
PTC
MRCP
Xray abdomen
Endoscpic USG
EUS- Most sensitive method to detect ampullary stones
All India exam