Efficiency of multi-slice spiral CT combined with magnetic resonance cholangiopancreatography in differential diagnosis of biliary obstructive diseases
Objective:To observe efficiency of multi-slice spiral CT(MSCT)combined with magnetic resonance cholangiopancreatography(MRCP)in differential diagnosis of biliary obstructive diseases.Methods:A cross-sectional study was conducted on 138 patients with biliary obstruction admitted to this hospital from March 2021 to April 2023.All patients were given MSCT and MRCP examination.Using the results of surgery or pathological biopsy as the"gold standard",the efficiencies of single and combined examination of MSCT and MRCP in the differential diagnosis of biliary obstructive diseases were compared.Results:The surgery or pathological biopsy showed that 55 of the 138 patients with biliary obstruction were malignant,including 14 cases of pancreatic head cancer,34 cases of cholangiocarcinoma,and 7 cases of duodenal papillary adenocarcinoma.There were 83 benign cases,including 79 cases of bile duct stones,2 cases of choledochal cyst,and 2 cases of extrahepatic bile duct compression.MRCP examination showed that 57 cases were malignant and 81 cases were benign.MSCT examination showed that 52 cases were malignant and 86 cases were benign.MSCT combined with MRCP showed that 66 cases were malignant and 72 cases were benign.The sensitivity and the negative predictive value of MRCP combined with MSCT in the diagnosis of biliary obstructive diseases were higher than those of MSCT and MRCP,the missed diagnosis rate was lower than that of MSCT and MRCP,and the differences were statistically significant(P<0.05).Conclusions:The efficiency of MSCT combined with MRCP in the differential diagnosis of biliary obstructive diseases is higher than that of the two single examinations.
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