Myocardial tissue tracking with two-dimensional cine displacement-encoded MR imaging: Development and initial evaluation
Myocardial tissue tracking with two-dimensional cine displacement-encoded MR imaging: Development and initial evaluation
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DOI：
10.1148/radiol.2303021213
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发表时间：
2004-03-01
期刊：
影响因子：
19.7
通讯作者：
Epstein, FH
中科院分区：
文献类型：
--
作者：
Kim, D;Gilson, WD;Epstein, FH
开发并评价了一种基于刺激回波位移编码（DENSE）的屏气二维电影磁共振（MR）脉冲序列，用于定量心肌运动跟踪。在序列中，互补空间调制的磁化被用于时间无关的伪影抑制，回波平面成像被用于快速数据采样。12名健康志愿者接受了电影DENSE。其中6例同时行常规MR心肌标记。在电影DENSE MR图像和常规标记MR图像上测量应变的周向缩短分量（E-cc）。利用磁化的互补空间调制，总电影DENSE MR图像能量的10%或更少归因于收缩期成像期间的伪影生成回波。二维心肌内位移和应变在电影密度磁共振成像测量空间分辨率和时间分辨率分别为2.7 × 2.7毫米和60毫秒。在电影DENSE MR成像中测量的E-cc与在常规MR成像标记中测量的E-cc具有良好的相关性（斜率= 0.88，截距0.00，R = 0.87）。(C)RSNA，2004年。
A breath-hold two-dimensional cine magnetic resonance (MR) pulse sequence based on displacement encoding with stimulated echoes (DENSE) for quantitative myocardial motion tracking was developed and evaluated. In the sequence, complementary spatial modulation of magnetization was used for time-independent artifact suppression, and echo-planar imaging was used for rapid data sampling. Twelve healthy volunteers underwent cine DENSE. MR imaging, and six of them also underwent conventional MR imaging myocardial tagging. The circumferential shortening component of strain (E-cc) was measured on cine DENSE MR images and conventional tagged MR images. With complementary spatial modulation of magnetization, 10% or less of the total cine DENSE MR image energy was attributed to an artifact-generating echo during systolic imaging. Two-dimensional intramyocardial displacement and strain were measured at cine DENSE MR imaging with spatial resolution and temporal resolution of 2.7 X 2.7 mm and 60 msec, respectively. E-cc measured at cine DENSE MR imaging correlated well with that measured at conventional MR imaging tagging (slope = 0.88, intercept 0.00, R = 0.87). (C) RSNA, 2004.