The role of latency period in quality management for free-breathing coronary wall MRI.
The role of latency period in quality management for free-breathing coronary wall MRI.
复制标题
潜伏期在自由呼吸冠状动脉壁 MRI 质量管理中的作用。
DOI：
10.1007/s10554-014-0586-6
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Carr,JamesC
中科院分区：
文献类型：
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作者：
Lin,Kai;Lloyd-Jones,DonaldM;Liu,Ying;Bi,Xiaoming;Lu,Biao;Li,Debiao;Carr,JamesC
本研究的目的是确定潜伏期对自由呼吸冠状动脉壁MRI性能的影响。经IRB批准，招募了70名受试者进行冠状动脉壁磁共振成像（MRI），并提供了书面知情同意书。在35例受试者中，首先对右冠状动脉节段（RCA 1 -3）进行成像;在其余受试者中，首先对左冠状动脉节段（LM和LAD 1 -3）进行成像。将图像分为组;第1组包含首先对右冠状动脉段成像的受试者的右冠状动脉图像和首先对左冠状动脉段成像的受试者的左冠状动脉图像。第2组包含其他冠状动脉节段。比较各组图像评分（1 -3级）、潜伏期、导航仪位置漂移（NAV）、扫描效率。图像组1的得分较高（1.66 ± 0.55 vs. 1.46 ± 0.51），潜伏期更短（32.04 ± 4.24 vs 44.22 ± 5.57 min），与第2组相比，NAV位置漂移较低（1.90 ± 1.27 mm vs. 2.61 ± 1.71 mm），扫描效率较高（32.7 ± 7.6 vs. 29.9 ± 7.9%）。长潜伏期对冠状动脉壁MRI的图像质量具有显著的负面影响。
The aim of the present study was to determine the effects of the latency period on the performance of free-breathing coronary wall MRI. With the approval of IRB, 70 participants were recruited for coronary wall magnetic resonance imaging (MRI) and provided written informed consent. In 35 subjects, right coronary segments (RCA1–3) were imaged first; in the remaining subjects, the left coronary segments (LM and LAD1–3) were imaged first. The images were classified into groups; group 1 contained right coronary images from the subjects whose right coronary segments were imaged first and left coronary images from the subjects whose left coronary segments were imaged first. Group 2 contained the other coronary segments. The image scores (ranked1–3), latency periods, drift of the position of the navigator (NAV), scan efficiency were compared between image groups. Image group 1 has higher scores (1.66 ± 0.55 vs. 1.46 ± 0.51), shorter latency periods (32.04 ± 4.24 vs. 44.22 ± 5.57 min), lower drift in the location of the NAV (1.90 ± 1.27 mm vs. 2.61 ± 1.71 mm) and higher scan efficiency (32.7 ± 7.6 vs. 29.9 ± 7.9 %) than group 2. Long latency periods have a significantly negative impact on the image quality of coronary wall MRI.