扩散加权成像中几个相关概念与图像解读

来源 :中国卒中杂志 | 被引量 : 0次 | 上传用户：chenanji

【摘要】

：

DWI是缺血性卒中诊断和治疗中使用最多的MRI影像技术,该成像技术可在活体上探测水分子的扩散行为,因此能够较早地探测超急性期脑梗死所导致的水分子扩散异常.这种扩散异常可为缺血性卒中的早发现、早诊断提供重要的影像学依据.在临床工作中,需要充分了解DWI的基本成像原理和图像信号的对比属性,这样才能更客观地解读DWI影像的信号变化.

【作者】

：

李昕张英魁

【机构】

：

长春 130020 吉林大学第二医院放射线科;首都医科大学附属北京天坛医院,国家神经系统疾病临床医学研究中心神经影像研究中心

【出处】

：

中国卒中杂志

【发表日期】

：

2022年2期

【关键词】

：

扩散加权成像 T2透射效应 T2冲蚀效应 T2暗化效应表观弥散系数

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扩散加权成像中几个相关概念与图像解读

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