The value of MinIP+CPR of MSCT in biliary obstruction

LIANG Ping; FANG Hua-sheng; CHENG Geng-rui; DENG Lin

Journal of China Clinic Medical Imaging ›› 2012, Vol. 23 ›› Issue (4) : 256-259.

论著

The value of MinIP+CPR of MSCT in biliary obstruction

LIANG Ping, FANG Hua-sheng, CHENG Geng-rui, DENG Lin

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Abstract

Objective: To evaluate the value of the minimum intensity projection(MinIP) and surface reconstruction(CPR) of multi-slice CT(MSCT) in biliary obstruction diseases. Materials and Methods: Forty-five patients with obstructive jaundice underwent MSCT scanning, and all the images were post processed with MinIP+CPR technique and analyzed. Results: There were 25 patients with benign lesions, including 12 cases of bile duct stones, 5 cases of common bile duct inflammation, 6 cases of gallstones and cholangitis and 2 cases of pancreatitis, 20 patients had malignant lesions, including 10 cases of cholangiocarcinoma, 3 cases of gallbladder involving the bile duct, 4 cases of pancreatic cancer involving the bile duct, 3 cases of ampullary carcinoma. The accurary for the location of benign and malignant lesions by MinIP+CPR were 92.0% and 95.0% respectively, and the qualitative coincidence rate was 88.0% and 90.0%. To some extent, images of MinIP+CPR techniques corrected those of axial and multi-planar reconstruction(MPR) techniques for telling the location, quantity and nature of the lesions, which especially improved diagnostic accuracy(P<0.05) of malignant lesions. Conclusion: MinIP+CPR techniques of MSCT can show the location and the nature of the disease more clearly, which is an essential and effective screening method for biliary obstruction, especially for malignant biliary obstruction diseases.