Tips. 1  Do not arrive more than 15 to 30 minutes in advance. 2  It would be best if you already know where exactly local USCIS office is located. If possible, go there in advance of your interview date and make sure you can find it and figure out parking etc. 3  There is no need to wear any suit/tie etc.
Definition. Endoscopic retrograde cholangiopancreatography (ERCP) is a technique in which a hollow tube called an endoscope is passed through the mouth and stomach to the duodenum (the first part of the small intestine). This procedure was developed to examine abnormalities of the bile ducts, pancreas, and gallbladder.
Magnetic resonance cholangiopancreatography (MRCP) is the technique that through use of magnetic resonance imaging. visualises the intra-and extrahepatic bile ducts and the pancreatic duct. First described in 1986, the technique has improved over the years.Today, MRCP is almost comparable to endoscopic retrograde cholangiopancreatography (ERCP) which is the other, invasive, imaging modality for the biliary tree.ne limitation of the MRCP technique in the detection of gall stones is that the slices are thicker than 5 mm, which requires partial volume averaging. This can lead to false-negative results when a stone is smaller than 5 mm in diameter.