TY - GEN
T1 - PSF model-based reconstruction with sparsity constraint algorithm and application to real-time cardiac MRI
AU - Zhao, Bo
AU - Haldar, Justin P.
AU - Liang, Zhi Pei
PY - 2010
Y1 - 2010
N2 - The partially separable function (PSF) model has been successfully used to reconstruct cardiac MR images with high spatiotemporal resolution from sparsely sampled (k,t)-space data. However, the underlying model fitting problem is often illconditioned due to temporal undersampling, and image artifacts can result if reconstruction is based solely on the data consistency constraints. This paper proposes a new method to regularize the inverse problem using sparsity constraints. The method enables both partial separability (or low-rankness) and sparsity constraints to be used simultaneously for high-quality image reconstruction from undersampled (k,t)-space data. The proposed method is described and reconstruction results with cardiac imaging data are presented to illustrate its performance.
AB - The partially separable function (PSF) model has been successfully used to reconstruct cardiac MR images with high spatiotemporal resolution from sparsely sampled (k,t)-space data. However, the underlying model fitting problem is often illconditioned due to temporal undersampling, and image artifacts can result if reconstruction is based solely on the data consistency constraints. This paper proposes a new method to regularize the inverse problem using sparsity constraints. The method enables both partial separability (or low-rankness) and sparsity constraints to be used simultaneously for high-quality image reconstruction from undersampled (k,t)-space data. The proposed method is described and reconstruction results with cardiac imaging data are presented to illustrate its performance.
UR - http://www.scopus.com/inward/record.url?scp=78650803541&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78650803541&partnerID=8YFLogxK
U2 - 10.1109/IEMBS.2010.5627934
DO - 10.1109/IEMBS.2010.5627934
M3 - Conference contribution
C2 - 21097243
AN - SCOPUS:78650803541
SN - 9781424441235
T3 - 2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10
SP - 3390
EP - 3393
BT - 2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10
T2 - 2010 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10
Y2 - 31 August 2010 through 4 September 2010
ER -