Free-breathing cardiac MR stress perfusion with real-time slice tracking.
Free-breathing cardiac MR stress perfusion with real-time slice tracking.
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DOI：
10.1002/mrm.24977
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发表时间：
2014-09
影响因子：
3.3
通讯作者：
Nezafat, Reza
中科院分区：
文献类型：
--
作者：
Basha, Tamer A.;Roujol, Sebastien;Kissinger, Kraig V.;Goddu, Beth;Berg, Sophie;Manning, Warren J.;Nezafat, Reza
开发一种自由呼吸的心脏MR灌注序列，用于体育锻炼后的切片跟踪。我们建议使用一个领先的导航仪，放置在每个2D切片采集之前，用于跟踪呼吸运动和实时更新切片位置。使用所提出的序列获取12名健康成人受试者和8名患者的CMR灌注数据集。将图像与相同受试者的常规灌注（即无切片跟踪）结果进行比较。定量分析心肌的位置和几何形状，并计算两种序列的灌注信号曲线，以显示所提出的序列的有效性。在定性图像评分方面，所提出的序列明显优于传统灌注序列。在切片跟踪序列中，心肌位置和几何形状的变化减少了约50%。此外，所提出的序列具有更平滑且噪声更小的信号曲线。所提出的序列显着减少了休息和应力灌注扫描的图像采集上的呼吸运动的影响。
To develop a free-breathing cardiac MR perfusion sequence with slice tracking for use after physical exercise. We propose to use a leading navigator, placed immediately before each 2D slice acquisition, for tracking the respiratory motion and updating the slice location in real-time. The proposed sequence was used to acquire CMR perfusion datasets in 12 healthy adult subjects and 8 patients. Images were compared with the conventional perfusion (i.e. without slice tracking) results from the same subjects. The location and geometry of the myocardium were quantitatively analyzed, and the perfusion signal curves were calculated from both sequences to show the efficacy of the proposed sequence. The proposed sequence was significantly better compared to the conventional perfusion sequence in terms of qualitative image scores. Changes in the myocardial location and geometry decreased by ~50% in the slice tracking sequence. Furthermore, the proposed sequence had signal curves that are smoother and less noisy. The proposed sequence significantly reduces the effect of the respiratory motion on the image acquisition in both rest and stress perfusion scans.
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影响因子：
14
作者：
Hsu, Li-Yueh;Groves, Daniel W.;Aletras, Anthony H.;Kellman, Peter;Arai, Andrew E.
通讯作者：
Arai, Andrew E.
影响因子：
3.9
作者：
Gusso, Silmara;Salvador, Carlo;Nielsen, Poul
通讯作者：
Nielsen, Poul
影响因子：
19.7
作者：
Gebker, Rolf;Jahnke, Cosima;Nagel, Eike
通讯作者：
Nagel, Eike
DOI：
10.1016/s0735-1097(98)00451-3
发表时间：
1998-11-15
影响因子：
24
作者：
Alexander, KP;Shaw, LJ;Peterson, ED
通讯作者：
Peterson, ED
影响因子：
4.8
作者：
Gupta, Vikas;Hendriks, Emile A.;Lelieveldt, Boudewijn P. F.
通讯作者：
Lelieveldt, Boudewijn P. F.