Detection of Biliary System Obstruction using Magnetic Resonance Cholangio-Pancreatographyand Ultrasonography

Abstract

This is prospective study to measure CBD,CHD,GB and cystic duct by U/S and MRCP and to test the accuracy of each modality in diagnosing causes of biliary system obstruction. The study was done in Khartoum state hospitals (Ibnsena-Soba on february2018), 52patients were tested by both U/S and MRCP. Using U/S 3.5MHz prom, TR (1500-200ms), TI (110-150ms), TE (240-300ms), FOV (300mm) and slice sickness 1mm, those examinations were performed using siemens (0.32T) permanent magnetom, Phillips (2.5T) and siemens (1.5T), the examinations were done by U/S using Fukuda, Toshiba and Sheimadzo machines. Ducts were measured by two technologists in each hospital and images diagnosed by two radiologists and two sonologists. measurements were done for CBD, cystic duct and GB, the causes of obstructive jaundice were detected as CBD stones, cystic duct stones, GB stones, GB mass and Ca-head of pancreas. The accuracy test was applied to determine the accuracy of each modality and it found that MRCP is the most accurate in measuring CBD (70.8%) while for U/S is (29.2%) and CA (61.1%), while for U/S is (38.9%), but U/S is most accurate in measuring GB (100%) and cystic duct stone (55.6%), while for MRICP (44.4%). As well as the most effected age group is 31-40 years (76.5%).