TY - GEN
T1 - A network flow method for improved MR field map estimation in the presence of water and fat
AU - Hernando, D.
AU - Kellman, P.
AU - Haldar, J. P.
AU - Liang, Z. P.
PY - 2008
Y1 - 2008
N2 - Field map estimation is an important problem in MRI, with applications such as water/fat separation and correction of fast acquisitions. However, it constitutes a nonlinear and severely ill-posed problem requiring regularization. In this paper, we introduce an improved method for regularized field map estimation, based on a statistically motivated formulation, as well as a novel algorithm for the solution of the corresponding optimization problem using a network flow approach. The proposed method provides theoretical guarantees (local optimality with respect to a large move), as well as an efficient implementation. It has been applied to the water/fat separation problem and tested on a number of challenging datasets, showing high-quality results.
AB - Field map estimation is an important problem in MRI, with applications such as water/fat separation and correction of fast acquisitions. However, it constitutes a nonlinear and severely ill-posed problem requiring regularization. In this paper, we introduce an improved method for regularized field map estimation, based on a statistically motivated formulation, as well as a novel algorithm for the solution of the corresponding optimization problem using a network flow approach. The proposed method provides theoretical guarantees (local optimality with respect to a large move), as well as an efficient implementation. It has been applied to the water/fat separation problem and tested on a number of challenging datasets, showing high-quality results.
UR - http://www.scopus.com/inward/record.url?scp=61849172289&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=61849172289&partnerID=8YFLogxK
U2 - 10.1109/iembs.2008.4649096
DO - 10.1109/iembs.2008.4649096
M3 - Conference contribution
C2 - 19162599
AN - SCOPUS:61849172289
SN - 9781424418152
T3 - Proceedings of the 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08 - "Personalized Healthcare through Technology"
SP - 82
EP - 85
BT - Proceedings of the 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08
PB - IEEE Computer Society
T2 - 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08
Y2 - 20 August 2008 through 25 August 2008
ER -