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EURASIP Journal on Advances in Signal Processing
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Dynamic MR-Imaging with Radial Scanning, a Post-Acquisition Keyhole Approach

EURASIP Journal on Advances in Signal Processing volume 2003, Article number: 794878 (2003) Cite this article

Abstract

A new method for 2D/3D dynamic MR-Imaging with radial scanning is proposed. It exploits the inherent strong oversampling in the centre of-space, which holds crucial temporal information of the contrast evolution. It is based on (1) a rearrangement of (novel 3D) isotropic distributions of trajectories during the scan according to the desired time resolution and (2) a post-acquisition keyhole approach. The 2D/3D dynamic images are reconstructed using 2D/3D-gridding and 2D/3D-IFFT. The scan time is not increased with respect to a conventional 2D/3D radial scan of the same image resolution, in addition one benefits from the dynamic information. An application to in vivo ventilation of rat lungs using hyperpolarized helium is demonstrated.

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Authors and Affiliations

  1. Laboratoire de Résonance Magnétique Nucléaire, CNRS UMR 5012, Université Claude Bernard Lyon I, CPE, France

    Ralf Lethmate, Yannick Crémillieux & Danielle Graveron-Demilly

  2. Department of Applied Physics, Delft University of Technology, P.O. Box 5046, Delft, 2600, GA, The Netherlands

    Frank T. A. W. Wajer & Dirk van Ormondt

Authors
  1. Ralf Lethmate
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  2. Frank T. A. W. Wajer
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  3. Yannick Crémillieux
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  4. Dirk van Ormondt
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  5. Danielle Graveron-Demilly
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Correspondence to Ralf Lethmate.

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Lethmate, R., Wajer, F.T.A.W., Crémillieux, Y. et al. Dynamic MR-Imaging with Radial Scanning, a Post-Acquisition Keyhole Approach. EURASIP J. Adv. Signal Process. 2003, 794878 (2003). https://doi.org/10.1155/S1110865703211197

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  • DOI: https://doi.org/10.1155/S1110865703211197

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