磁共振扩散加权成像在胰腺癌诊断中的价值

目的探讨磁共振扩散加权成像在胰腺癌诊断中的价值。方法选择2012年1月～2013年1月间临床可疑胰腺癌患者75例，对这些患者进行磁共振扩散加权成像检查，将检查结果与病理结果比较，明确两者之间的相关性，同时确定磁共振扩散加权成像在胰腺癌诊断中的敏感性、特异性。结果75例可疑胰腺癌患者经DWI检查，诊断为胰腺癌38例，与病理结果比较，两者存在相关性（r=23．12，P=-0．00〈0．05），且相关系数为0．56。同时与病理结果比较DWI诊断胰腺癌的敏感性为73．33％，特异性为83．33％，阳性预测值和阴性预测值分别为86．84％和67．57％。结论磁共振扩散加权成像作为无创检查手段能够准确地对胰腺占位做出定性诊断，在临床应用价值较大。

The diagnositic value of diffusion weighted magnetic resonance imaging in pancreatic cancer

Objective To discuss the diagnostic value of diffusion weighted magnetic resonance imaging（DWI） in pan- creatic cancer. Methods 75 cases of suspected patients with pancreatic cancer were checked by DWI,and compared the re- sult of DWI and pathological diagnosis, to explor the relationship between DWI and pathological diagnosis and the sensibility and specificity of DWI. Results 75 cases of suspected pancreatic cancer patients had undergone DWI examination,there were 38 patients who had been diagnosed of pancreatic cancer. There was a correlation between the two method （Xz=23.12, P=-0.00〈0.05）, with a correlation coefficient of 0.56. DWI diagnosis of pancreatic cancer with a sensitivity of 73.33% and a specificity of 83.33%, positive predictive value and negative predictive value were 86.84% and 67.57%. Conclusion DWI is a noninvasive means to be able to make an accurate diagnosis of pancreatic mass.