TY - GEN
T1 - A model-based method with joint sparsity constraint for direct diffusion tensor estimation
AU - Zhu, Yanjie
AU - Wu, Yin
AU - Zheng, Yuanjie
AU - Wu, Ed X.
AU - Ying, Leslie
AU - Liang, Dong
PY - 2012
Y1 - 2012
N2 - Diffusion tensor imaging (DTI) has been widely used for nondestructive characterization of microstructures of myocardium or brain connectivity. It requires repeated acquisition with different diffusion gradients. The long acquisition time greatly limits the clinical application of DTI. In this paper, a novel method, named model-based method with joint sparsity constraint (MB-JSC), effectively incorporates the prior information on the joint sparsity of different diffusion-weighted images in direct estimation of the diffusion tensor from highly undersampled k-space data. Experimental results demonstrate that the proposed method is able to estimate the diffusion tensors more accurately than the existing method when a high net reduction factor is used.
AB - Diffusion tensor imaging (DTI) has been widely used for nondestructive characterization of microstructures of myocardium or brain connectivity. It requires repeated acquisition with different diffusion gradients. The long acquisition time greatly limits the clinical application of DTI. In this paper, a novel method, named model-based method with joint sparsity constraint (MB-JSC), effectively incorporates the prior information on the joint sparsity of different diffusion-weighted images in direct estimation of the diffusion tensor from highly undersampled k-space data. Experimental results demonstrate that the proposed method is able to estimate the diffusion tensors more accurately than the existing method when a high net reduction factor is used.
KW - Diffusion tensor imaging (DTI)
KW - distributed compressed sensing
KW - joint sparsity constraint
KW - modelbased (MB) method
UR - https://www.scopus.com/pages/publications/84864853865
U2 - 10.1109/ISBI.2012.6235597
DO - 10.1109/ISBI.2012.6235597
M3 - Conference contribution
AN - SCOPUS:84864853865
SN - 9781457718588
T3 - Proceedings - International Symposium on Biomedical Imaging
SP - 510
EP - 513
BT - 2012 9th IEEE International Symposium on Biomedical Imaging
T2 - 2012 9th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, ISBI 2012
Y2 - 2 May 2012 through 5 May 2012
ER -