Abstract #3230

Improved In-plane SENSE PROPELLER with Multi-Step Joint-Blade Reconstruction

Mengye Lyu^1,2, Yilong Liu^1,2, Victor B. Xie^1,2, Yanqiu Feng^1,2, Zhe Zhang³, Hua Guo³, and Ed X. Wu¹

¹Laboratory of Biomedical Imaging and Signal Processing, The University of Hong Kong, Hong Kong SAR, China, People's Republic of, ²Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong SAR, China, People's Republic of, ³Department of Biomedical Engineering, Tsinghua University, Beijing, China, People's Republic of

This work addresses three problems for in-plane SENSE-accelerated PROPELLER: generally amplified noise, increased artifact with narrow blades, and degraded motion correction with wide blades. We show that a novel reconstruction method - multi-step join-blade (MJB) SENSE can lead to higher SNR and less narrow-blade artifact than conventional SENSE reconstruction. In addition, k-space truncation is used to improve the motion correction robustness. We also show that additional iterations can enhance MJB SENSE. This new method can greatly benefit future SENSE PROPELLER studies with improved image quality.

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