除了注意他们的BMI指数外，研究者还对他们做了脑部磁共振，观察脑容量，血流和脑部代谢物浓度。

In addition to noting the men's BMI, researchers also did brain magnetic resonance imaging, looking at brain volume, blood flow and concentrations of metabolites in the brain.

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目的评价磁共振胰胆管成像（MRCP）对胆道梗阻性疾病的临床诊断价值，探讨肝外胆道梗阻的MRCP、MRI诊断和鉴别诊断。

Objective To evaluate the clinical value of MR cholangiopancreatography (MRCP)in diagnosis of biliary obstruction, and their value in diagnosis and differential diagnosis of MRCP and MRI.

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目的评价磁共振胆胰管造影(MRCP)对肝外胆管梗阻性疾病的临床诊断价值。

Objective to evaluate the clinical value of MR cholangiopancreatography (MRCP) in diagnosis of extrahepatic biliary obstructive disease.

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