Accelerated Black-Blood Cine MR Imaging with Low-Rank and Sparsity Constraints.
Accelerated Black-Blood Cine MR Imaging with Low-Rank and Sparsity Constraints.
复制标题
具有低秩和稀疏约束的加速黑血电影 MR 成像。
DOI：
10.1109/embc40787.2023.10340783
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Zhao,Bo
中科院分区：
文献类型：
--
作者：
Sun,Aiqi;Lu,Hengfa;Wu,Peng;Zhao,Bo
黑血MRI是用于评估血管疾病（例如，中风）。使用黑血电影MRI的血管壁动态表征已被认为是研究血管疾病的有效工具。然而，采集时间分辨的3D血管壁图像通常需要较长的采集时间，这限制了其临床实用性。在这项工作中，我们开发了一种新的方法来实现快速，时间分辨的3D黑血电影MRI。具体地，所提出的方法执行（k，t）空间欠采样以加速体积数据采集过程。此外，它利用低秩和稀疏约束的图像重建方法，使高质量的图像重建从高度欠采样数据。我们验证了所提出的方法与3D在体内黑血电影MRI实验的性能，并显示代表性的结果，以证明所提出的方法的实用性。
Black-blood MRI is a promising imaging technique for assessing vascular diseases (e.g., stroke). Vessel wall dynamic characterization using black-blood cine MRI has been recognized as an effective tool for studying vascular diseases. However, acquiring time-resolved 3D vessel wall images often requires a long acquisition time, which limits its clinical utility. In this work, we develop a new method to achieve rapid, time-resolved 3D black-blood cine MRI. Specifically, the proposed method performs (k, t)-space undersampling to accelerate the volumetric data acquisition process. Moreover, it utilizes an image reconstruction method with low-rank and sparsity constraints to enable high-quality image reconstruction from highly-undersampled data. We validate the performance of the proposed method with 3D in vivo black-blood cine MRI experiments and show representative results to demonstrate the utility of the proposed method.