磁共振T2定量成像技术在肿瘤评价中的应用进展

Application progress of MRI-T2 mapping in tumor

MRI因具有多平面、多序列、高分辨率等特点,对肿瘤疾病评估具有重要价值。随着肿瘤诊疗逐渐精准化,肿瘤影像的定量评价逐渐成为研究热点。T2定量成像(T2 mapping)技术是一种可以在体素水平上对组织T2值进行定量分析的方法,并可通过后处理生成空间对应的伪彩图,以不同颜色反映T2值的高低,提高观察的客观性及直观性。良恶性肿瘤组织细胞密度的不同及肿瘤治疗过程中发生水肿、坏死等因素均可导致T2值改变。故T2 mapping具有极高的临床应用价值。本文就目前T2 mapping技术在肿瘤中的研究进展进行较全面的阐述。

MRI is of important value to the diagnosis of tumor diseases due to its multiple planes,multiple sequences,high resolution,etc.With the precision of tumor diagnosis and treatment,quantitative evaluation of tumor image has gradually become a research focus.T2 mapping is a method for quantitative analysis of T2 values in tissues at the voxel level.Color maps corresponding to space can be generated through post-processing which reflect the T2 values in different colors to improve the objectivity and intuition of observation.The changes of T2 value can be caused by the density of benign and malignant tumor tissues,edema and necrosis during tumor treatment.Therefore,T2 mapping has high clinical application value.This article reviews the progress about quantitative research of T2 mapping in tumors.