POCS-based reconstruction of multiplexed sensitivity encoded MRI (POCSMUSE): A general algorithm for reducing motion-related artifacts.
POCS-based reconstruction of multiplexed sensitivity encoded MRI (POCSMUSE): A general algorithm for reducing motion-related artifacts.
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基于POCS的多重灵敏度编码MRI（POCSMUSE）的重建：一种用于减少运动相关伪影的一般算法。
DOI：
10.1002/mrm.25527
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发表时间：
2015-11
影响因子：
3.3
通讯作者：
Chen, Nan-Kuei
中科院分区：
文献类型：
--
作者：
Chu, Mei-Lan;Chang, Hing-Chiu;Chung, Hsiao-Wen;Truong, Trong-Kha;Bashir, Mustafa R.;Chen, Nan-Kuei
提出了一种多路敏感编码MRI凸集投影重建方法（POCSMUSE），用于减少运动相关伪影，包括腹部成像中的呼吸伪影和交错扩散加权成像（DWI）中的混叠伪影。减少伪影的图像重建与迭代POCS程序，使用线圈灵敏度曲线作为约束。该方法可以应用于用不同脉冲序列和k空间轨迹获得的数据。此外，各种约束条件可以被纳入到稳定的病态矩阵的重建。POCSMUSE技术应用于腹部快速自旋回波成像数据，并评价其在自动触发扫描中的有效性。POCSMUSE方法也被应用于减少由于交错DWI数据中对应于不同k空间轨迹和矩阵条件数的拍摄到拍摄相位变化而引起的混叠伪影。实验结果表明，POCSMUSE技术可以有效地减少与不同的脉冲序列，k空间轨迹和对比度获得的数据中的运动相关的伪影。POCSMUSE是一种通用的后处理算法，用于减少与运动相关的伪影。它与不同的脉冲序列兼容，并且还可以用于进一步减少由现有运动伪影减少方法产生的数据中的残留伪影。
A projection onto convex sets reconstruction of multiplexed sensitivity encoded MRI (POCSMUSE) is developed to reduce motion-related artifacts, including respiration artifacts in abdominal imaging and aliasing artifacts in interleaved diffusion weighted imaging (DWI). Images with reduced artifacts are reconstructed with an iterative POCS procedure that uses the coil sensitivity profile as a constraint. This method can be applied to data obtained with different pulse sequences and k-space trajectories. In addition, various constraints can be incorporated to stabilize the reconstruction of ill-conditioned matrices. The POCSMUSE technique was applied to abdominal fast spin-echo imaging data, and its effectiveness in respiratory-triggered scans was evaluated. The POCSMUSE method was also applied to reduce aliasing artifacts due to shot-to-shot phase variations in interleaved DWI data corresponding to different k-space trajectories and matrix condition numbers. Experimental results show that the POCSMUSE technique can effectively reduce motion-related artifacts in data obtained with different pulse sequences, k-space trajectories and contrasts. POCSMUSE is a general post-processing algorithm for reduction of motion-related artifacts. It is compatible with different pulse sequences, and can also be used to further reduce residual artifacts in data produced by existing motion artifact reduction methods.
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影响因子：
3.3
作者：
Chang, Hing-Chiu;Guhaniyogi, Shayan;Chen, Nan-kuei
通讯作者：
Chen, Nan-kuei
影响因子：
3.3
作者：
Chen, Nan-Kuei;Avram, Alexandru V.;Song, Allen W.
通讯作者：
Song, Allen W.
影响因子：
3.3
作者：
MCGIBNEY, G;SMITH, MR;CRAWLEY, A
通讯作者：
CRAWLEY, A
影响因子：
3.3
作者：
Miller, KL;Pauly, JM
通讯作者：
Pauly, JM
影响因子：
5.7
作者：
Chen, Nan-kuei;Guidon, Arnaud;Chang, Hing-Chiu;Song, Allen W.
通讯作者：
Song, Allen W.