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    • Sub-8-minute Cardiac Four Dimensional Flow MRI Using Kat ARC and Variable Density Signal Averaging

    Peng Lai,Ann Shimakawa,Joseph Y Cheng,Marcus T Alley,Shreyas Vasanawala,Anja C Brau

    Journal of Cardiovascular Magnetic Resonance（2015）

    Global MR Applications and Workflow | Radiology

    Cited 4|Views36
    Abstract
    Background Recently, 3D CINE phase-contrast MRI (4D Flow) has demonstrated potential for quantitative measurement of blood flow of the cardiovascular systems in the entire thoracic trunk [1]. However, the needs of 4D flow for high resolution, large volume coverage & respiratory gating render very long scan time. This work intended to improve the data acquisition efficiency of free-breathing cardiac 4D flow.
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    Respiratory Motion Artifact,60ms Temporal Resolution,Golden Angle,Aliasing Artifact,Parallel Imaging Method
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    【要点】：本文通过采用kat ARC和可变密度信号平均技术，实现了小于8分钟的心脏四维血流MRI，以提高自由呼吸心脏四维血流数据的采集效率。
    

    【方法】：研究采用kat ARC序列和可变密度信号平均技术来缩短数据采集时间。
    

    【实验】：实验通过kat ARC序列和可变密度信号平均技术，在缩短数据采集时间的同时，保持了血流成像的高分辨率和大量覆盖，实现了自由呼吸条件下心脏四维血流成像，有效提高了数据采集效率。数据集名称未在摘要中提及，但实验结果显示了小于8分钟的高质量心脏四维血流成像结果。
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