title: MR image reconstruction based on iterative Split Bregman algorithm and nonlocal total variation.
abstract: This paper introduces an efficient algorithm for magnetic resonance (MR) image reconstruction. The proposed method minimizes a linear combination of nonlocal total variation and least-square data-fitting term to reconstruct the MR images from undersampled k-space data. The nonlocal total variation is taken as the L 1-regularization functional and solved using Split Bregman iteration. The proposed algorithm is compared with previous methods in terms of the reconstruction accuracy and computational complexity. The comparison results demonstrate the superiority of the proposed algorithm for compressed MR image reconstruction.
authors.affiliation: Department of Electronics and Communication Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015, India. vpgcet@gmail.com
authors.forename: Varun P
authors.initials: VP
authors.lastname: Gopi
authors.forename: P
authors.initials: P
authors.lastname: Palanisamy
authors.forename: Khan A
authors.initials: KA
authors.lastname: Wahid
authors.forename: Paul
authors.initials: P
authors.lastname: Babyn
mesh_terms: D000465:Algorithms; D001158:Arteries / Q000033:anatomy & histology; D001921:Brain / Q000033:anatomy & histology; D019295:Computational Biology; D044962:Data Compression / Q000706:statistics & numerical data; D006321:Heart / Q000033:anatomy & histology; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D016018:Least-Squares Analysis; D008279:Magnetic Resonance Imaging / Q000706:statistics & numerical data*; D059629:Signal-To-Noise Ratio; D013909:Thorax / Q000033:anatomy & histology