TY - JOUR
T1 - Exponential Wavelet Iterative Shrinkage Thresholding Algorithm for compressed sensing magnetic resonance imaging
AU - Zhang, Yudong
AU - Dong, Zhengchao
AU - Phillips, Preetha
AU - Wang, Shuihua
AU - Ji, Genlin
AU - Yang, Jiquan
N1 - Publisher Copyright:
© 2015 Elsevier Inc.
PY - 2015/11/20
Y1 - 2015/11/20
N2 - It is beneficial for both hospitals and patients to accelerate MRI scanning. Recently, a new fast MRI technique based on CS was proposed. However, the reconstruction quality and computation time of CS-MRI did not meet the standard of clinical use. Therefore, we proposed a novel algorithm based on three successful components: the sparsity of EWT, the rapidness of FISTA, and the excellent tuning in SISTA. The proposed method was dubbed Exponential Wavelet Iterative Shrinkage/Threshold Algorithm (EWISTA). Experiments over four kinds of MR images (brain, ankle, knee, and ADHD) indicated that the proposed EWISTA showed better reconstruction performance than the state-of-the-art algorithms such as FCSA, ISTA, FISTA, SISTA, and EWT-ISTA. Moreover, EWISTA was faster than ISTA and EWT-ISTA, but slightly slower than FCSA, FISTA and SISTA.
AB - It is beneficial for both hospitals and patients to accelerate MRI scanning. Recently, a new fast MRI technique based on CS was proposed. However, the reconstruction quality and computation time of CS-MRI did not meet the standard of clinical use. Therefore, we proposed a novel algorithm based on three successful components: the sparsity of EWT, the rapidness of FISTA, and the excellent tuning in SISTA. The proposed method was dubbed Exponential Wavelet Iterative Shrinkage/Threshold Algorithm (EWISTA). Experiments over four kinds of MR images (brain, ankle, knee, and ADHD) indicated that the proposed EWISTA showed better reconstruction performance than the state-of-the-art algorithms such as FCSA, ISTA, FISTA, SISTA, and EWT-ISTA. Moreover, EWISTA was faster than ISTA and EWT-ISTA, but slightly slower than FCSA, FISTA and SISTA.
KW - Compressed sensing
KW - Iterative Shrinkage/Thresholding Algorithm
KW - Magnetic resonance imaging
KW - Sparsifying transform
KW - Sparsity measure
UR - http://www.scopus.com/inward/record.url?scp=84940020478&partnerID=8YFLogxK
U2 - 10.1016/j.ins.2015.06.017
DO - 10.1016/j.ins.2015.06.017
M3 - Article
AN - SCOPUS:84940020478
SN - 0020-0255
VL - 322
SP - 115
EP - 132
JO - Information Sciences
JF - Information Sciences
M1 - 11611
ER -