MRCP  – Magnetic resonance cholangio-pancreaticography (MRCP) delineates the gall bladder and biliary ducts and helps to identify the various pathologies affecting the biliary system. This test helps to locate cause and level of any blockages in the biliary system. The main advantages of MRCP over the endoscopic retrograde cholangio-pancreaticography (ERCP) are that it is non-invasive and can also show dilated ducts in cases where endoscope cannot be passed