Highly accelerated cardiac cine parallel MRI using low-rank matrix completion and partial separability model

Jingyuan Lyu; Ukash Nakarmi; Chaoyi Zhang; Leslie Ying

doi:10.1117/12.2225490

4 May 2016 Highly accelerated cardiac cine parallel MRI using low-rank matrix completion and partial separability model

Jingyuan Lyu, Ukash Nakarmi, Chaoyi Zhang, Leslie Ying

Proceedings Volume 9857, Compressive Sensing V: From Diverse Modalities to Big Data Analytics; 98570C (2016) https://doi.org/10.1117/12.2225490
Event: SPIE Commercial + Scientific Sensing and Imaging, 2016, Baltimore, MD, United States

Abstract

This paper presents a new approach to highly accelerated dynamic parallel MRI using low rank matrix completion, partial separability (PS) model. In data acquisition, k-space data is moderately randomly undersampled at the center kspace navigator locations, but highly undersampled at the outer k-space for each temporal frame. In reconstruction, the navigator data is reconstructed from undersampled data using structured low-rank matrix completion. After all the unacquired navigator data is estimated, the partial separable model is used to obtain partial k-t data. Then the parallel imaging method is used to acquire the entire dynamic image series from highly undersampled data. The proposed method has shown to achieve high quality reconstructions with reduction factors up to 31, and temporal resolution of 29ms, when the conventional PS method fails.

Citation Download Citation

Jingyuan Lyu, Ukash Nakarmi, Chaoyi Zhang, and Leslie Ying "Highly accelerated cardiac cine parallel MRI using low-rank matrix completion and partial separability model", Proc. SPIE 9857, Compressive Sensing V: From Diverse Modalities to Big Data Analytics, 98570C (4 May 2016); https://doi.org/10.1117/12.2225490

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