3.0T超高场磁共振弥散加权成像在胰腺癌诊断中的价值

目的:探讨3.0T超高场磁共振弥散加权成像(DWI)在胰腺癌诊断中的价值。方法:回顾性分析我院经病理证实的胰腺癌患者24例,总结胰腺癌的MRI特点。结果:在24例患者的直接征象中,脂肪抑制T1WI呈低信号23例,等信号1例,T2WI相呈稍高信号19例,等信号5例。增强结果显示24例病灶在动脉期均呈现相对低信号,门静脉期和平衡期均可见到不同程度的不规则边缘强化,病灶中心低信号。在间接征象中13例患者出现肝内外胆管不同程度扩张,6例见胰管不同程度扩张。结论:DWI可显示小胰腺癌病灶,可清晰区分肿瘤组织与正常胰腺组织,对胰腺癌的早期诊断及临床分期具有非常重要价值。

The diagnostic value of DWI in pancreatic cancer with 3.0T ultra high-field magnetic resonance

Objective： To investigate the diagnostic value of diffusion weighted imaging （DWI） in pancreatic cancer with 3.0T ultra high-field magnetic resonance. Methods： To conduct retrospective analysis on 24 cases of pathologically confirmed pancreatic cancer in the past three years, summarize the MRI features of pancreatic cancer. Results： In twenty-four cases of patients with direct signs, 23 cases were fat suppression on T1WI low signal, 1 case was equal signal, 19 cases were slightly hyperintense on T2WI and 5 cases were equal signal. The enhanced results showed that 24 cases of lesions in the arterial phase with a relatively low signal, the portal venous phase and equilibrium phase can be seen the varying degrees of irregular peripheral enhancement, the low signal was in the lesion center. Indirect signs of the 13 cases varied degrees of bile duct dilatation, 6 cases of different degrees of pancreatic duct dilatation. Conclusion： DWI can display small pancreatic lesions, we can clearly distinguish between tumor tissue and normal pancreatic tissue. It has a very important value in early diagnosis and staging of pancreatic cancer.