Greedy approximate projection for magnetic resonance fingerprinting with partial volumes
Greedy approximate projection for magnetic resonance fingerprinting with partial volumes
复制标题
部分体积磁共振指纹的贪婪近似投影
DOI:
10.1088/1361-6420/ab356d
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发表时间:
2020
期刊:
影响因子:
2.1
通讯作者:
Duarte R
中科院分区:
文献类型:
--
作者:
Duarte R
In quantitative Magnetic Resonance Imaging, traditional methods suffer from the so-called Partial Volume Effect (PVE) due to spatial resolution limitations. As a consequence of PVE, the parameters of the voxels containing more than one tissue are not correctly estimated. Magnetic Resonance Fingerprinting (MRF) is not an exception. The existing methods addressing PVE are neither scalable nor accurate. We propose to formulate the recovery of multiple tissues per voxel as a non-convex constrained least-squares minimisation problem. To solve this problem, we develop a memory efficient, greedy approximate projected gradient descent algorithm, dubbed GAP-MRF. Our method adaptively finds the regions of interest on the manifold of fingerprints defined by the MRF sequence. We generalise our method to compensate for phase errors appearing in the model, using an alternating minimisation approach. We show, through simulations on synthetic data with PVE, that our algorithm outperforms state-of-the-art methods in reconstruction quality. Our approach is validated on the EUROSPIN phantom and on in vivo datasets.
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影响因子:
4.6
作者:
Rieger B;Akçakaya M;Pariente JC;Llufriu S;Martinez-Heras E;Weingärtner S;Schad LR
通讯作者:
Schad LR
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
R. Giryes;Michael Elad
通讯作者:
Michael Elad
DOI:
10.1109/jstsp.2010.2042411
发表时间:
2010-04-01
影响因子:
7.5
作者:
Blumensath, Thomas;Davies, Mike E.
通讯作者:
Davies, Mike E.
影响因子:
2.1
作者:
Beck, Amir;Teboulle, Marc
通讯作者:
Teboulle, Marc
DOI:
10.1073/pnas.0437847100
发表时间:
2003-03-04
影响因子:
11.1
作者:
Donoho, DL;Elad, M
通讯作者:
Elad, M