IVIM-DWI腹部应用及其进展

Application and advances of IVIM-DWI in abdomen

体素内不相干运动(intravoxel incoherent motion imaging,IVIM)是指MR弥散加权成像(diffusion-weighted imaging,DWI)上体素内信号衰减同时包括真性水分子弥散和毛细血管网中随机血流微循环灌注,更全面地分析组织扩散成像数据,揭示疾病的病理生理学改变。近年来,IVIM逐渐被应用于临床研究中,其在腹部的研究也越来越多,主要集中在肝脏、胰腺及肾脏等部位。作者对IVIM在腹部中的应用及其进展进行综述。

Concept of intravoxel incoherent motion imaging（IVIM） has demonstrated that the diffusion-weighted signal can be influenced not only by molecular diffusion but also by microcirculation. It allows a more comprehensive analysis of datas of diffusionweighted imaging（DWI）. Recent years, IVIM has been gradually used in clinical study. The research of IVIM in abdominal organs is more and more, mainly involving areas such as liver, pancreas and kidney and so on. This article aims to review the latest research advances of IVIM-DWI in abdomen.