Calibrationless multi-slice Cartesian MRI via orthogonally alternating phase encoding direction and joint low-rank tensor completion

Zhao, Yujiao1,2; Yi, Zheyuan1,2,3; Liu, Yilong1,2; Chen, Fei3; Xiao, Linfang1,2; Leong, Alex T. L.1,2; Wu, Ed X.1,2

2022-02-01

10.1002/nbm.4695

NMR IN BIOMEDICINE   影响因子和分区

0952-3480

1099-1492

We propose a multi-slice acquisition with orthogonally alternating phase encoding (PE) direction and subsequent joint calibrationless reconstruction for accelerated multiple individual 2D slices or multi-slice 2D Cartesian MRI. Specifically, multi-slice multi-channel data are first acquired with random or uniform PE undersampling while orthogonally alternating PE direction between adjacent slices. They are then jointly reconstructed through a recently developed low-rank multi-slice Hankel tensor completion (MS-HTC) approach. The proposed acquisition and reconstruction strategy was evaluated with human brain MR data. It effectively suppressed aliasing artifacts even at high acceleration factor, outperforming the existing MS-HTC approach, where PE direction is the same between adjacent slices. More importantly, the new strategy worked robustly with uniform undersampling or random undersampling without any consecutive central k-space lines. In summary, our proposed multi-slice MRI strategy exploits both coil sensitivity and image content similarities across adjacent slices. Orthogonally alternating PE direction among slices substantially facilitates the low-rank completion process and improves image reconstruction quality. This new strategy is applicable to uniform and random PE undersampling. It can be easily implemented in practice for Cartesian parallel imaging of multiple individual 2D slices without any coil sensitivity calibration.

calibrationless parallel imaging low-rank tensor completion multi-slice phase encoding direction alternation random undersampling uniform undersampling

SCI ; EI

英语

其他

Guangdong Key Technologies for Alzheimer's Disease Diagnosis and Treatment[2018B030336001] ; Guangdong Key Technologies for Treatment of Brain Disorders[2018B030332001] ; Hong Kong Research Grant Council["HKU17103819/HKU17104020","R7003-19/C7048-16G/HKU17112120"]

Biophysics ; Radiology, Nuclear Medicine & Medical Imaging ; Spectroscopy

Biophysics ; Radiology, Nuclear Medicine & Medical Imaging ; Spectroscopy

WOS:000753252700001

WILEY

20220711642881

Encoding (symbols) ; Image enhancement ; Image reconstruction ; Signal encoding ; Tensors

Magnetism: Basic Concepts and Phenomena:701.2 ; Information Theory and Signal Processing:716.1 ; Data Processing and Image Processing:723.2 ; Imaging Techniques:746 ; Algebra:921.1

CLINICAL MEDICINE

Web of Science

1.Univ Hong Kong, Lab Biomed Imaging & Signal Proc, Hong Kong, Peoples R China
2.Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Peoples R China
3.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen, Peoples R China

Zhao, Yujiao,Yi, Zheyuan,Liu, Yilong,et al. Calibrationless multi-slice Cartesian MRI via orthogonally alternating phase encoding direction and joint low-rank tensor completion[J]. NMR IN BIOMEDICINE,2022,35.

Zhao, Yujiao.,Yi, Zheyuan.,Liu, Yilong.,Chen, Fei.,Xiao, Linfang.,...&Wu, Ed X..(2022).Calibrationless multi-slice Cartesian MRI via orthogonally alternating phase encoding direction and joint low-rank tensor completion.NMR IN BIOMEDICINE,35.

Zhao, Yujiao,et al."Calibrationless multi-slice Cartesian MRI via orthogonally alternating phase encoding direction and joint low-rank tensor completion".NMR IN BIOMEDICINE 35(2022).