CT、MRI对急性胰腺炎的诊断价值比较

目的比较CT或MRI对急性胰腺炎的诊断价值。方法以我院2013年1月-2015年6月就诊的60例疑似急性胰腺炎患者为研究对象,所有患者均行CT、MRI检查,观察CT、MRI影像学表现,并与病理结果对照比较CT、MRI对急性胰腺炎诊断敏感度、特异度及准确度。结果CT表现:急性水肿型胰腺炎表现出胰腺肿大、形态规则、胰腺密度较均匀、胰管、胆管轻中度扩张特点;急性坏死型胰腺炎2表现出胰腺密度不均匀、体积明显增大、斑片状或大片状低密度灶特点。MRI表现:多为胰腺明显肿大、胰腺病变区、胰腺周边组织呈现长T1、长T2信号影特点。病理确诊48例,CT诊断敏感度、准确度分别为77.1%、76.7%,显著低于MRI的93.8%、93.3%(P0.05)。结论 CT、MRI表现对急性胰腺炎诊断均有一定的诊断价值,其中MRI诊断敏感度、准确率、特异度均比CT高。

Comparison of the Value of CT and MRI in the Diagnosis of Acute Pancreatitis

Objective To compare the value of CT and MRI in the diagnosis of acute pancreatitis.Methods 60 patients with suspected acute pancreatitis treated in our hospital from January 2013 to June 2015 were treated as the research objects.All patients underwent CT and MRI examination.The imaging findings of CT and MRI were observed and compared with pathological findings.The sensitivity,specificity and accuracy of CT and MRI in the diagnosis of acute pancreatitis were compared.Results CT findings:acute edema type pancreatitis showed pancreatic enlargement,regular shape,relatively homogeneous pancreatic density and mild to moderate expansion of pancreatic duct and bile duct;Acute necrotizing pancreatitis showed inhomogeneous pancreatic density,significantly increased volume and patchy or large-sheet low-density lesions.MRI findings:most were obvious enlargement of the pancreas,long T1,long T2 signal in the pancreatic lesion area and the peripheral tissue of the pancreas.48 cases were diagnosed by pathology.The sensitivity and accuracy of CT were 77.1％ and 76.7％ respectively which were significantly lower than those of MRI (93.8％,93.3％) (P＜0.05).Conclusion CT and MRI expression in the diagnosis of acute pancreatitis have certain diagnostic value and the diagnostic sensitivity,accuracy and specificity of MRI were higher than those of CT.