Guibaud L, Bret P M, Reinhold C, Atri M, Barkun A N
Department of Diagnostic Radiology, Montreal General Hospital, McGill University, Quebec, Canada.
Radiology. 1995 Oct;197(1):109-15. doi: 10.1148/radiology.197.1.7568807.
To evaluate the accuracy of magnetic resonance (MR) cholangiopancreatography in the diagnosis of bile duct obstruction.
One hundred twenty-six patients with clinically suspected bile duct obstruction underwent MR cholangiopancreatography with heavily T2-weighted fast spin-echo sequences. Reviewers were blinded to clinical and imaging findings.
Seventy-nine patients had biliary obstruction that was diagnosed with MR cholangiopancreatography in 72 patients for a sensitivity of 91%, specificity of 100%, and overall accuracy of 94%. Thirty-two patients had choledocholithiasis that was diagnosed with MR cholangiopancreatography in 26 patients for an accuracy of 94%, sensitivity of 81%, specificity of 98%, positive predictive value of 93%, and negative predictive value of 94%. Fourteen patients had malignant obstruction that was diagnosed with MR cholangiopancreatography in 12 patients for a sensitivity and a positive predictive value of 86%, specificity and negative predictive value of 98%, and accuracy of 97%.
MR cholangiopancreatography is a noninvasive technique with excellent accuracy in the diagnosis of bile duct obstruction and its causes.
评估磁共振胰胆管造影（MRCP）在胆管梗阻诊断中的准确性。
126例临床怀疑胆管梗阻的患者接受了采用重T2加权快速自旋回波序列的MRCP检查。阅片者对临床和影像表现不知情。
79例患者存在胆管梗阻，其中72例通过MRCP诊断出来，敏感性为91%，特异性为100%，总体准确性为94%。32例患者患有胆总管结石，其中26例通过MRCP诊断出来，准确性为94%，敏感性为81%，特异性为98%，阳性预测值为93%，阴性预测值为94%。14例患者存在恶性梗阻，其中12例通过MRCP诊断出来，敏感性和阳性预测值为86%，特异性和阴性预测值为98%，准确性为97%。
MRCP是一种在胆管梗阻及其病因诊断中具有极高准确性的无创技术。
