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Communication Dans Un Congrès Année : 2016

Optimizing MRI contrast with optimal control theory

Résumé

Magnetic Resonance Imaging (MRI) uses the difference in tissue relaxation times to create contrast. Various image weightings can be obtained by tuning acquisition parameters which are usually empirically defined. In this article, optimal control theory is used to design excitation pulses that produce the optimal contrast between given tissues. The designed pulses are tested on numerical phantoms with and without magnetic field inhomogeneities and for the first time in vitro on a small-animal MRI. The reasonable match between simulation and real experiments is promising for the development of such pulses in further in vivo applications.

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Imagerie
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Dates et versions

hal-01466294 , version 1 (13-02-2017)

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  • HAL Id : hal-01466294 , version 1

Citer

Eric van Reeth van Reeth, Hélène Ratiney, Michael Tesch, Steffen Glaser, Dominique Sugny. Optimizing MRI contrast with optimal control theory. 24th annual meeting and exhibition ISMRM 2016, May 2016, Singapour, Singapore. pp.Abstract #4298. ⟨hal-01466294⟩
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