NONINVASIVE MEASUREMENT OF TRANSMURAL GRADIENTS IN MYOCARDIAL STRAIN WITH MR IMAGING
NONINVASIVE MEASUREMENT OF TRANSMURAL GRADIENTS IN MYOCARDIAL STRAIN WITH MR IMAGING
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DOI：
10.1148/radiology.180.3.1871278
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发表时间：
1991-09-01
期刊：
影响因子：
19.7
通讯作者：
ZERHOUNI, EA
中科院分区：
文献类型：
--
作者：
MCVEIGH, ER;ZERHOUNI, EA
提出了一种利用磁共振(MR)标记进行高分辨率应变测量的方法。多光谱射频脉冲被用来产生标记网格，从该网格以2 mm的分辨率获得应变估计。提出了一种标签检测算法，该算法测量标签线的中心，其精度在收缩间期内从0.1 mm到0.2 mm。用这种方法，我们检测到了正常狗心脏应变的跨壁梯度。
A method is presented for performing high-resolution strain measurements by using magnetic resonance (MR) tagging. Multispectral radiofrequency pulses are used to produce tagging grids from which strain estimates are obtained with a resolution of 2 mm. A tag detection algorithm is presented that measures the center of a tag line with a precision that ranges from 0.1 to 0.2 mm over the systolic interval. With this method, a transmural gradient in the strain of a normal dog heart was detected.