Retrospective Electrocardiography-Gated Real Time Cardiac Cine MRI at 3T: Comparison with Conventional Segmented Cine MRI
Retrospective Electrocardiography-Gated Real Time Cardiac Cine MRI at 3T: Comparison with Conventional Segmented Cine MRI
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DOI：
10.3348/kjr.2018.0243
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发表时间：
2019-01-01
影响因子：
4.8
通讯作者：
Zhao, Shihua
中科院分区：
文献类型：
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作者：
Cui, Chen;Yin, Gang;Zhao, Shihua
目的：心脏分段电影磁共振成像（MRI）是评价心室容积的金标准。对于屏气困难或心律失常的患者，该技术可能生成质量不足以诊断的图像。实时心脏电影MRI已被开发来解决这一限制。我们的目的是评估性能的回顾性心电图门控实时电影MRI在3 T左心室（LV）的体积和质量measurement.Materials和方法：51例患者连续入组。使用分段和实时平衡稳态自由旋进心脏电影MRI获得了一系列覆盖整个左心室的短轴电影图像。测量舒张末期容积（EDV）、收缩末期容积（ESV）、每搏输出量（SV）、射血分数（EF）和LV质量。评估参数的一致性和相关性。此外，图像质量进行了评价，使用欧洲CMR注册（Euro-CMR）评分和结构的可视性rating.Results：在患者没有困难的屏气或心律失常，没有显着差异，发现在Euro-CMR评分之间的两种技术（0.3 +/- 0.7与0.3 +/- 0.5，p > 0.05）。测量EDV、ESV、EF、SV和LV质量的技术之间存在良好的一致性和相关性。在屏气困难或心律失常的患者中，分段电影MRI具有显著较高的Euro-CMR评分（2.3 +/- 1.2 vs. 0.4 +/- 0.5，p < 0.001）。真实的-在3 T下的时间电影MRI允许以高准确度评估LV体积，并且在难以进行以下检查的患者中，与分段电影MRI相比，显示出显著更好的图像质量：屏气和心律不齐
Objective: Segmented cardiac cine magnetic resonance imaging (MRI) is the gold standard for cardiac ventricular volumetric assessment. In patients with difficulty in breath-holding or arrhythmia, this technique may generate images with inadequate quality for diagnosis. Real-time cardiac cine MRI has been developed to address this limitation. We aimed to assess the performance of retrospective electrocardiography-gated real-time cine MRI at 3T for left ventricular (LV) volume and mass measurement.Materials and Methods: Fifty-one patients were consecutively enrolled. A series of short-axis cine images covering the entire left ventricle using both segmented and real-time balanced steady-state free precession cardiac cine MRI were obtained. End-diastolic volume (EDV), end-systolic volume (ESV), stroke volume (SV), ejection fraction (EF), and LV mass were measured. The agreement and correlation of the parameters were assessed. Additionally, image quality was evaluated using European CMR Registry (Euro-CMR) score and structure visibility rating.Results: In patients without difficulty in breath-holding or arrhythmia, no significant difference was found in Euro-CMR score between the two techniques (0.3 +/- 0.7 vs. 0.3 +/- 0.5, p > 0.05). Good agreements and correlations were found between the techniques for measuring EDV, ESV, EF, SV, and LV mass. In patients with difficulty in breath-holding or arrhythmia, segmented cine MRI had a significant higher Euro-CMR score (2.3 +/- 1.2 vs. 0.4 +/- 0.5, p < 0.001).Conclusion: Real-time cine MRI at 3T allowed the assessment of LV volume with high accuracy and showed a significantly better image quality compared to that of segmented cine MRI in patients with difficulty in breath-holding and arrhythmia.