Volume 89, Issue 1 pp. 396-410
RESEARCH ARTICLE

ADEPT: Accurate Diffusion Echo-Planar imaging with multi-contrast shoTs

Banafshe Shafieizargar

Corresponding Author

Banafshe Shafieizargar

imec-Vision Lab, Department of Physics, University of Antwerp, Antwerp, Belgium

NEURO Research Centre of Excellence, University of Antwerp, Antwerp, Belgium

Correspondence

Banafshe Shafieizargar, imec-Vision Lab, Department of Physics, University of Antwerp, Universiteitsplein 1, D.N.103, 2610, Antwerp, Belgium.

Email: [email protected]

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Ben Jeurissen

Ben Jeurissen

imec-Vision Lab, Department of Physics, University of Antwerp, Antwerp, Belgium

NEURO Research Centre of Excellence, University of Antwerp, Antwerp, Belgium

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Dirk H. J. Poot

Dirk H. J. Poot

Department of Radiology and Nuclear Medicine, Biomedical Imaging Group Rotterdam, Erasmus MC, Rotterdam, The Netherlands

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Stefan Klein

Stefan Klein

Department of Radiology and Nuclear Medicine, Biomedical Imaging Group Rotterdam, Erasmus MC, Rotterdam, The Netherlands

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Johan Van Audekerke

Johan Van Audekerke

NEURO Research Centre of Excellence, University of Antwerp, Antwerp, Belgium

Bio-Imaging Lab, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium

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Marleen Verhoye

Marleen Verhoye

NEURO Research Centre of Excellence, University of Antwerp, Antwerp, Belgium

Bio-Imaging Lab, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium

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Arnold J. den Dekker

Arnold J. den Dekker

imec-Vision Lab, Department of Physics, University of Antwerp, Antwerp, Belgium

NEURO Research Centre of Excellence, University of Antwerp, Antwerp, Belgium

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Jan Sijbers

Jan Sijbers

imec-Vision Lab, Department of Physics, University of Antwerp, Antwerp, Belgium

NEURO Research Centre of Excellence, University of Antwerp, Antwerp, Belgium

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First published: 15 September 2022
Citations: 1

Funding information: Fonds Wetenschappelijk Onderzoek, Grant/Award Numbers: 12M3119N; G084217N; H2020 Marie Skłodowska-Curie Actions, Grant/Award Number: 764513

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Abstract

Purpose

To introduce a novel imaging and parameter estimation framework for accurate multi-shot diffusion MRI.

Theory and Methods

We propose a new framework called ADEPT (Accurate Diffusion Echo-Planar imaging with multi-contrast shoTs) that enables fast diffusion MRI by allowing diffusion contrast settings to change between shots in a multi-shot EPI acquisition (i.e., intra-scan modulation). The framework estimates diffusion parameter maps directly from the acquired intra-scan modulated k-space data, while simultaneously accounting for shot-to-shot phase inconsistencies. The performance of the estimation framework is evaluated using Monte Carlo simulation studies and in-vivo experiments and compared to that of reference methods that rely on parallel imaging for shot-to-shot phase correction.

Results

Simulation and real-data experiments show that ADEPT yields more accurate and more precise estimates of the diffusion metrics in multi-shot EPI data in comparison with the reference methods.

Conclusion

ADEPT allows fast multi-shot EPI diffusion MRI without significantly degrading the accuracy and precision of the estimated diffusion maps.

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