الفهرس 
Introduction & Aim ofOnly 14 pages are availabe for public view
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Abstract
Since the first reported in 1990, MRCP has evolved and rapidly progressed as a safe non invasive technique that displayed the biliopancreatictract. MRCP is based on heavily T2 weighted sequences that present static or slowly flowing fluids including the secretions as bright structures against a dark background.
According to the method used to overcome the respiratory motion artifacts, MRCP techniques were broadly classified into breath hold and non breath hold techniques.
The aim of this study was to evaluate the role of MRCP as a rapid, accurate, non invasive imaging technique in evaluation of patients with biliary diseases. We assessed the sensitivity of the technique to detect biliary obstruction and specificity of the technique to detect the cause of obstruction as benign or malignant.
We examined 21 cases by MRCP using two techniques: breath Hold, two Dimensional (2D), Single shot, MR Cholangiopancreatography (single slice technique) and respiratory Triggered, Three Dimensional (3D), MR Cholangiopancreatography with MIP reconstruction.
In all the cases, MRCP displayed the different parts of the biliary system and localized the exact site of obstruction in all obstructed 13 cases. According to the morphology encountered in the site of obstruction, MRCP was found highly specific in differentiating the malignant and benign causes of obstruction.
Regarding the bengin conditions , MRCP detected 5 of calcular gallbladder disease only, 2 cases of choledocholithiasis only, 5 cases of calcular GB disease and choledocholithiasis, 1 case of choledochal cyst and 3 cases of previous operations 2 of them are postoperative cholecystectomy and one case of post liver transplantation. MRCP has sensitivity up to 100% to detect bengin conditions.
Regarding the malignant conditions, There were 3 cases of cholangiocarcinoma, 1 case of ampullary carcinoma and 1 case of postoperative Klatskin tumor with placement of a stent.
In current study, MRCP detected 4 cases of malignant stricture with sensitivity 100%.In conclusion MRCP will in the recent future, modify the approach to patients presenting with biliary obstruction that is because it can totally replace the diagnostic role of ERCP and the staging role of CT in malignant biliary obstruction. Thus distinguishing between operative lesions and those only requiring palliative treatment in a completely non invasive manner.