arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.11356cs.LGeess.SPmath.OCstat.ML
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基准学习非笛卡尔k空间轨迹和重建网络

Benchmarking learned non-Cartesian k-space trajectories and reconstruction networks

CEA(法国原子能和替代能源委员会);Inria(法国国家信息与自动化研究所);Université Paris-Saclay(巴黎萨克雷大学)

Chaithya G R, Philippe Ciuciu

摘要:

我们对当前现有的方法进行基准测试,以共同学习非笛卡尔k空间轨迹和重建:PILOT,BJORK,并将它们与最近开发的广义混合学习(HybLearn)框架进行比较。我们提出的优势,使用投影梯度下降,以执行MR扫描仪硬件的限制相比,使用附加的罚款的成本函数。此外,我们使用新的HybLearn方案通过对fastMRI验证数据集的回顾性研究来共同学习和比较我们的结果。

英文摘要:

We benchmark the current existing methods to jointly learn non-Cartesian k-space trajectory and reconstruction: PILOT, BJORK, and compare them with those obtained from the recently developed generalized hybrid learning (HybLearn) framework. We present the advantages of using projected gradient descent to enforce MR scanner hardware constraints as compared to using added penalties in the cost function. Further, we use the novel HybLearn scheme to jointly learn and compare our results through a retrospective study on fastMRI validation dataset.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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