急性胰腺炎MRI诊断

MRI in diagnosis of acute pancreatitis

目的探讨MRI在急性胰腺炎中的诊断价值。方法选择经临床确诊的急性胰腺炎20例,男14例,女6例,平均年龄41.4岁。20例中轻度型15例,重度型5例。使用1.5T超导MRI扫描仪,SE序列常规T1WI和T2WI横断和冠状面成像;MRCP使用2D、HASTE加脂肪抑。结果MRI主要显示胰腺肿大,腹腔或局限性胰周积液,胰腺信号不均匀或假囊肿形成;MRCP主要显示胰胆管扩张、狭窄或宽窄不一,严重的胰胆管呈囊肿扩张。结论MRI尤其T2WI能清楚显示胰腺组织坏死、假囊肿、腹水等,如结合MRCP胰胆管的狭窄、扩张及腔内缺损等表现,一般能作出急性胰腺炎、轻重程度及病因的诊断。

Objective To determine the value of MRI on thediagnosis of acute pancreatitis. Methods 15 mild to moderate and5 severe cases of clinically proven acute pancreatitis (male,14case; female,6 cases; averaging 41.4 years old),underwent MRIexamination using 1.5T MRI scanner to form axial and coronalimages on T1WI and T2WI using SE sequences,In MRCR,2D,HASTE and FAT SAT were used. Results MRI showed swellingof pancreas,acites in abdominal and/or localized peri-pancreascavity, heterogeneous signal or pseudocyst.Moreover MRCP dis-played dilated or narrow pancreaobiliary duct,or sometimes ir-regular one,even cyst-like dilation in the severe cases. ConclusionMRI,especially its T2WI clearly display necrosis, pseudocyst andacites. The diagnosis of acute pancreatitis, as well as its severityand its causes can be made according to the appearance ofpancreaobiliary duct,either being narrow,or diluted,or intracavitydefect.