磁共振T2 mapping技术在体部恶性肿瘤中的研究进展

随着磁共振影像技术及大数据的快速发展,肿瘤的影像诊断不仅仅是局限于影像表现,如何将肿瘤病灶的特性进行定量成像评价逐渐成为研究的热点。目前,T1加权成像(T1 weighted imaging,T1WI)、T2加权成像(T2 weighted imaging,T2WI)、弥散加权成像(diffusion weighted imaging,DWI)及动态增强(dynamic contrast enhancement,DCE)技术已经成为磁共振检查的常规序列,各加权序列图上信号强度的大小仅能间接反映组织的特性。T2 mapping成像技术是定量成像技术中的一种,具有客观性、较好的可重复性及稳定性,在骨关节炎和心肌水肿中的运用和研究较多。随着技术的发展及体部肿瘤发病率的逐年升高,近年来也逐渐开始被应用到体部肿瘤方面的研究,作者就T2 mapping在体部恶性肿瘤中的定量研究进展予以综述。

Research progress of magnetic resonance T2-mapping in body malignant tumors

With the rapid development of magnetic resonance imaging technologies and big data era, the diagnosis of tumors does not only depend on imaging manifestations. How to quantitatively evaluate the characteristics of tumors has gradually become a hot research issue. T1-weighted imaging(T1WI), T2-weighted imaging(T2WI), diffusion weighted imaging(DWI) and dynamic contrast enhancement(DCE) techniques have become routine sequences during the daily MRI scanning at present. The signal intensity on the weighted images cannot directly reflect the characteristics of the tissue. As one of the MR quantitative technologies, T2 mapping is objective, reproductive and stable, and has been frequently applied to the researches about osteoarthritis and myocardial edema. With the development of MR imaging, it has been applied to the studies of body tumor gradually in recent years. This article reviews the progress about quantitative research of T2 mapping in body tumors.