Dark blood versus bright blood T2*acquisition in cardiovascular magnetic resonance (CMR) for thalassaemia major (TM) patients: Evaluation of feasibility, reproducibility and image quality
Dark blood versus bright blood T2*acquisition in cardiovascular magnetic resonance (CMR) for thalassaemia major (TM) patients: Evaluation of feasibility, reproducibility and image quality
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DOI：
10.1016/j.ejrad.2013.10.007
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发表时间：
2014-01-01
影响因子：
3.3
通讯作者：
Zobel, Bruno Beomonte
中科院分区：
文献类型：
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作者：
Liguori, Carlo;Di Giampietro, Ilenia;Zobel, Bruno Beomonte
目的：比较暗血 (DB) 与亮血 (BB) 序列的有效性。评估 BB 与 DB 之间的观察者内和观察者间变异性以及研究间再现性。为了评估这两个序列的图像质量水平。方法：在 138 名患者的设置中，我们使用心室间隔中部的心脏门控梯度多回波单屏气 BB 和 DB 序列进行 CMR。在同一检查期间重复每次采集。使用截断方法来解释背景噪声。图像质量 (IQ) 采用 5 分分级标准进行评估，图像分析由 2 名经验丰富的观察员进行。结果：与传统的 BB 采集相比，DB 技术的相关系数和显着性在观察者内再现性 (p < 0.001)、观察者间再现性 (p < 0.001) 和研究间再现性 (p < 0.001) 方面均优于传统 BB 采集。 T2* 值的 DB 序列的变异性也较低
Objectives: To compare the effectiveness of dark blood (DB) versus bright blood (BB) sequences. To assess the intra and inter-observer variability and inter-study reproducibility between BB versus DB. To evaluate image quality level in the two sequences.Methods: In a setting of 138 patients we performed CMR using cardiac gated Gradient-multiecho single breath-hold BB and DB sequences in the middle ventricular septum.Each acquisition was repeated during the same exam. Truncation method was used to account for background noise. Image quality (IQ) was assessed using a 5 point grading scale and image analysis was conducted by 2 experienced observers. Results: Compared with the conventional BB acquisition, the coefficient of correlation and significance of the DB technique was superior for intra-observer reproducibility (p < 0.001), inter-observer reproducibility (p < 0.001) and inter-study reproducibility (p < 0.001). The variability is also lower for DB sequences for T2* values