He Guo

Professor   Supervisor of Doctorate Candidates   Supervisor of Master's Candidates

Gender:Male

Alma Mater:大连理工大学

Degree:Master's Degree

School/Department:软件学院、国际信息与软件学院

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Paper Publications

Improved l1-SPIRiT using 3D walsh transform-based sparsity basis

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Date:2019-03-09

Indexed by:Journal Article

Date of Publication:2014-09-01

Journal:MAGNETIC RESONANCE IMAGING

Included Journals:Scopus、PubMed、SCIE

Volume:32

Issue:7

Page Number:924-933

ISSN:0730-725X

Key Words:MRI; Compressed Sensing; l1-SPIRiT; Walsh transform

Abstract:l1-SPIRiT is a fast magnetic resonance imaging (MRI) method which combines parallel imaging (PI) with compressed sensing (CS) by performing a joint l1-norm and l2-norm optimization procedure. The original l1-SPIRiT method uses two-dimensional (2D) Wavelet transform to exploit the intra-coil data redundancies and a joint sparsity model to exploit the inter-coil data redundancies. In this work, we propose to stack all the coil images into a three-dimensional (3D) matrix, and then a novel 3D Walsh transform-based sparsity basis is applied to simultaneously reduce the intra-coil and inter-coil data redundancies. Both the 2D Wavelet transform-based and the proposed 3D Walsh transform-based sparsity bases were investigated in the l1-SPIRiT method. The experimental results show that the proposed 3D Walsh transform-based l1-SPIRiT method outperformed the original l1-SPIRiT in terms of image quality and computational efficiency. (C) 2014 Elsevier Inc. All rights reserved.

Personal Profile

教育背景:

  • 学士学位:吉林大学计算机系,1982

  • 硕士学位:大连理工大学计算机系,1989

科研与工作经历:

  • 1986年10月—1987年10月,新西兰Progeni Company,访问学者

  • 1990年10月—1992年12月,德国PDI Karlsruhe University计算机系,访问学者

  • 1992年12月—2007年12月,大连理工大学计算机系,副教授

  • 1995年3月—1996年6月,大连市金卡工程系统,总工程师

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  • 2008年1月—今,大连理工大学软件学院,教授

  • 2020年4月 退休

教学工作:

  • 1992年—2007年,计算机导论,计算机组织与结构,计算机系统结构

  • 2009年—2019年,存储技术,计算机系统结构,并行计算

科研:

  • 研究兴趣:并行与分布式计算。

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