Evaluation of myocardial volume heterogeneity during end-diastole and end-systole using cine MRI.
Evaluation of myocardial volume heterogeneity during end-diastole and end-systole using cine MRI.
复制标题
使用电影 MRI 评估舒张末期和收缩末期心肌体积异质性。
DOI：
10.1081/jcmr-200036147
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
Jerosch-Herold,Michael
中科院分区：
文献类型：
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作者：
Swingen,Cory;Wang,Xiaoen;Jerosch-Herold,Michael
本研究的目的是使用左心室长轴和短轴视图的稳态自由旋进梯度回波电影成像和新开发的三维（3D）分析方法，检查24名人类志愿者在舒张末期和收缩末期之间的心肌体积差异。此外，我们回顾性检查了20例受试者的电影磁共振成像（MRI）研究，包括一组短轴视图，从底部到顶部，适用于标准二维（2D）分析。使用3D分析方法，在舒张末期（艾德）和收缩末期（ES）之间未发现心肌体积的显著差异（平均差异= 0.1% ± 9.1%，p = 0.88），而2D技术在ES处获得的LV心肌体积值显著大于艾德（平均差异= 14.7% ± 16.8%，p < 0.0001）。两组受试者的艾德心肌体积密切相关（3D：122.81 ± 27.58 mL vs. 2D：129.0 ± 37.21 mL，p= 0.29），而ES时的2D心肌体积显著更大（3D：123.01 ± 28.65 mL vs. 2D：150.47 ± 47.29 mL，p= 0.002）。本研究的结果支持以下观点：心动周期期间心肌体积不会发生变化，艾德和ES处肌肉体积之间的任何差异都可以通过使用包括心脏长轴视图的广义3D分析方法在心动周期内精确跟踪二尖瓣平面来消除。
The aim of this study was to examine the difference in the myocardial volume between end‐diastole and end‐systole in 24 human volunteers, using steady‐state free precession gradient‐echo cine imaging of both long‐ and short‐axis views of the left ventricle and a newly developed three‐dimensional (3D) analysis method. In addition, we examined retrospectively the cine magnetic resonance imaging (MRI) studies from 20 of the subjects that included a stack of short‐axis views, from base to apex, suitable for a standard two‐dimensional (2D) analysis. With the 3D analysis method, no significant variance in the myocardial volume was found (mean difference = 0.1% ± 9.1%,p= 0.88) between end‐diastole (ED) and end‐systole (ES), while the 2D technique yielded significantly larger values for the LV myocardial volume at ES than ED (mean difference = 14.7% ± 16.8%,p< 0.0001). ED myocardial volumes correlated closely in subjects belonging to both groups (3D: 122.81 ± 27.58 mL vs. 2D: 129.0 ± 37.21 mL,p= 0.29), while the 2D myocardial volumes were significantly larger at ES (3D: 123.01 ± 28.65 mL vs. 2D: 150.47 ± 47.29 mL,p= 0.002). The findings of this study support the notion that myocardial volume does not change during the cardiac cycle and any discrepancies between muscle volume at ED and ES can be eliminated by exact tracking of the mitral valve plane over the cardiac cycle, using a generalized, 3D analysis method that includes long‐axis views of the heart.