多模态DWI在胰腺疾病诊断中的研究进展

发布时间：2018-07-02 23:23

本文选题：磁共振扩散成像 + 体素内不相干运动　；参考：《放射学实践》2017年08期

【摘要】：胰腺为腹膜外器官,胰腺病变通常起病隐匿,疾病进展快且预后较差,早期诊断尤为重要,其诊断方法中MRI扩散加权成像常为首选检查方法。目前的DWI技术主要有单指数模型、双指数体素内不相干运动(IVIM)模型及拉伸指数模型(stretched exponential model)三种模型,单指数模型是基础,双指数模型及拉伸指数模型是在单指数模型的基础上发展而来,三种模型的应用基础及诊断价值有所不同,本文就多指数模态DWI技术的基本原理、临床应用范围及在胰腺方面的应用进展进行综述。
[Abstract]:The pancreas is an extraperitoneal organ, and pancreatic lesions are usually hidden, the disease progresses quickly and the prognosis is poor. The early diagnosis is especially important. The MRI diffusion weighted imaging is the first choice in the diagnosis of pancreatic lesions. At present, there are three kinds of DWI models: single exponential model, double exponent incoherent motion model and stretching index model (stretched exponential model), which is based on single exponential model. The double exponential model and the stretching index model are developed on the basis of the single exponential model. The application basis and diagnostic value of the three models are different. In this paper, the basic principle of multi-exponential mode DWI technique is discussed. The scope of clinical application and progress in the application of pancreas were reviewed.
【作者单位】：四川省医学影像学重点实验室川北医学院附属医院放射科;成都市第六人民医院;
【基金】：四川省教育厅基金项目(16ZA0228)
【分类号】：R445.2;R576

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