扩散加权成像的技术进展  

Technical Advances in Diffusion Weighted Imaging

作　　者：曹丽欣 陈梓盼 陈晓东 黄尚清 王湘源 罗文暄 罗树存 陈东 CAO Li-xin;CHEN Zi-pan;CHEN Xiao-dong;HUANG Shang-qing;WANG Xiang-yuan;LUO Wen-xuan;LUO Shu-cun;CHEN Dong(Department of Radiology,Affiliated Hospital of Guangdong Medical University,Zhanjiang 524000,Guangdong Province,China;College of Medical Technology,Guangdong Medical University,Dongguan 523000,Guangdong Province,China)

机构地区：[1]广东医科大学附属医院放射科,广东湛江524000 [2]广东医科大学医学技术学院,广东东莞523000

出　　处：《中国CT和MRI杂志》2024年第9期173-176,共4页Chinese Journal of CT and MRI

基　　金：湛江市科技发展专项资金竞争性分配项目(2019A01026,2020A01024);广东医科大学附属医院临床研究项目(LCYJ2020B010);广东医科大学附属医院博士基金(BJ201521)。

摘　　要：磁共振扩散加权成像(diffusion weighted imaging,DWI)是一种通过检测人体组织内水分子的扩散运动来分析病变内部结构及组织成分的无创性功能成像方法。目前临床上较多使用的是单次激发平面回波扩散加权成像技术,成像速度快,但图像质量差。随着新的DWI相关技术的出现可以进一步的提高图像质量和扩大应用范围。本文对新的DWI相关技术的成像理论、技术进展及临床应用等方面进行综述。Diffusion weighted imaging(DWI)is a noninvasive functional imaging method that analyzes the internal structure and tissue components of lesions by detecting the diffusion movement of water molecules in human tissues.At present,single-shot echo planar imaging(ss-EPI)DWI technology is mostly used clinically,which has fast imaging speed but poor image quality.With the emergence of new DWIrelated technologies,image quality and application range can be further improved.This article reviews the imaging theory,technical progress and clinical application of new DWI-related technologies.

关 键 词：受激回波扩散加权成像 弥散频谱成像 b张量编码成像 振荡梯度扩散加权成像 

分 类 号：R445.2[医药卫生—影像医学与核医学]