 Hello everyone, this video is about Magnetic Resonance Collangio Pantry Artigraphy or MRCP with a few illustrative examples. MRCP is a commonly used non-invasive imaging technique used for evaluation of pancreatic ability disorders. It uses heavily T2 weighted pulse sequences to accentuate fluid signal within the pancreatic ability retreat, which possess a long T2 relaxation time relative to the surrounding software structures which have shorter T2 relaxation times. A comprehensive protocol includes additional sequences for correlation and comprehensive assessment of pathology. Common indications for MRCP are identification of congenital anomalies of the cystic and hepatic ducts, colidocolatiasis, post-surgical bilirian anatomy and complications, pancreatitis, pancreas divisum, biliary structures, anomalous pancreatic ability rejection, trauma to the biliria system, and pancreatic cystic lesions. Commonly used protocol for MRCP includes thick slab T2 weighted images, thin T2 weighted images which can be reconstructed in multiple planes, T2 axial and coronal images, T2 fat saturated images which are particularly useful to look for pericolystic edema and pancreatic paranchymal edema in cases of pancreatitis, T1, DWI and post-contrast images are optional. This is a thick slab T2 weighted MRCP image showing the normal pancreatic bilirian anatomy. The right and the left hepatic duct joined together to form the common hepatic duct. The common hepatic duct is joined by the cystic duct at the medial aspect to form the common biliduct. This is the course of pancreatic duct. This is the confluence of CBD and the pancreatic duct right here. This cystic structure is the gallbladder. This is a part of the stomach and this is the duodenum. These are thin T2 weighted MRCP images. This is the pancreatic duct. Trace it inferiorly to see its entire course. The gallbladder with the calculus within it. Left hepatic duct, right hepatic duct, the common biliduct, terminal common biliduct, terminal pancreatic duct and the confluence of pancreatic duct and common biliduct. This is a thick slab T2 weighted MRCP image showing multiple felling effects in the fundus of gallbladder and in terminal CBD consistent with cholelythiasis and choledo cholethiasis respectively. CBD is mildly prominent. However, there is no significant intra hepatic bilirian radical dilatation. The pancreatic duct is normal. The confluence of CBD and pancreatic duct is also normal. Coronary T2 weighted images of the same patient showing choledo cholethiasis and cholelythiasis respectively. In addition to cholelythiasis and choledo cholethiasis, T2 axial images show a high point tense fluid level consistent with sludge. Thick slab MRCP images in a patient with upper abdominal pain show multiple calculus filling the entire lumen of gallbladder. No obvious felling effects to suggest calculus seen in common biliduct. Loop shaped configuration pancreatic duct is seen. Thick slab T2 weighted MRCP images in another post-cholestectomy patient showing a calculus at the junction of cystic duct remnant and common biliduct. This is causing significant upstream dilatation of the common biliduct, the cystic duct remnant and intra hepatic bilirian radicals. In addition, there is variant anatomy of the biliriary with the right posterior sectoral duct draining directly into the common hepatic duct. Mentioning the variant anatomy becomes important to guide therapeutic procedures. This thick slab T2 weighted MRCP image in a post-cholestectomy patient shows multiple calculus within the common biliduct and cystic duct remnant with significant dilatation of the intra hepatic bilirian radicals. The pancreatic duct appears normal in course and calibre. In addition to the above mentioned findings, T2 coronal images in the same patient shows an accessory pancreatic duct crossing the common biliduct at its anterior aspect and draining into the minor papillof dodenum. T2 fat saturated images showing the same finding. Thick slab MRCP images show a normal main pancreatic duct which join the distal CBD forming the confidence and draining into the major papilla. A linear hyper intense structure is seen arising from the distal pancreatic duct. This crosses the main pancreatic duct and CBD to drain into the minor papilla consistent with the ansa pancreatica. Common biliduct is mildly prominent however no obvious filling effect suggesting a calculus seen. Intra hepatic biliradicals are not dilated. Thick slab MRCP image shows the main pancreatic duct crossing the common biliduct and draining separately into the minor papilla consistent with pancreatic division. A linear hyper intense structure is seen inferior to the main pancreatic duct possibly representing accessory pancreatic duct. This is possibly communicating with the main pancreatic duct as well as the terminal CBD duct. These findings need to be confirmed on T2 coronal and axial images. Thin T2 coronal MRCP images in a child presenting with upper abdominal pain show fusiform cystic dilatation of the common hepatic and common biliducts. This dilatation is seen up to the junction of common biliduct and main pancreatic duct. Abnormal high junction of pancreatic duct and CBD is seen with an abnormally long common channel which ultimately drains into the major papilla. These findings are consistent with colloidal cyst type 1. Thick slab MRCP image shows the same findings. Thick slab images in a patient with chronic pancreatitis showing a dilated pancreatic duct with multiple intraductal calculi. Thick slab MRCP image in a patient with jaundice shows gross dilatation of the intraepatic biliraticals. Gallbladder lumen is only partially visualized. Coronal T2 image shows a mass lesion involving the fundus and body of gallbladder which is inseparable from the adjacent liver parenchyma. Multiple round to void hyper intense lesions are seen in both lobes of liver. Coronal T2 images of the same patient showing lesion involving the neck of gallbladder extending into the hepatic hilum infiltrating the proximal biliducts and common hepatic duct. Findings consistent with carcinoma gallbladder and hepatic metastasis.