Details der Publikation - Multidimensional compressed sensing to advance 23Na multi-quantum coherences MRI

Multidimensional compressed sensing to advance 23Na multi-quantum coherences MRI / Christian Licht, Simon Reichert, Maxime Guye, Lothar R. Schad, Stanislas Rapacchi

Purpose Sodium (23Na) multi-quantum coherences (MQC) MRI was accelerated using three-dimensional (3D) and a dedicated five-dimensional (5D) compressed sensing (CS) framework for simultaneous Cartesian single (SQ) and triple quantum (TQ) sodium imaging of in vivo human brain at 3.0 and 7.0 T. Theory and Methods 3D 23Na MQC MRI requires multi-echo paired with phase-cycling and exhibits thus a multidimensional space. A joint reconstruction framework to exploit the sparsity in all imaging dimensions by extending the conventional 3D CS framework to 5D was developed. 3D MQC images of simulated brain, phantom and healthy brain volunteers obtained from 3.0 T and 7.0 T were retrospectively and prospectively undersampled. Performance of the CS models were analyzed by means of structural similarity index (SSIM), root mean squared error (RMSE), signal-to-noise ratio (SNR) and signal quantification of tissue sodium concentration and TQ/SQ ratio. Results It was shown that an acceleration of three-fold, leading to less than 2×10\ 2\times 10 \ min of scan time with a resolution of 8×8×20 mm3\ 8\times 8\times 20\;\mathrmmm^3 \ at 3.0 T, are possible. 5D CS improved SSIM by 3%, 5%, 1% and reduced RMSE by 50%, 30%, 8% for in vivo SQ, TQ, and TQ/SQ ratio maps, respectively. Furthermore, for the first time prospective undersampling enabled unprecedented high resolution from 8×8×20 mm3\ 8\times 8\times 20\;\mathrmmm^3 \ to 6×6×10 mm3\ 6\times 6\times 10\;\mathrmmm^3 \ MQC images of in vivo human brain at 7.0 T without extending acquisition time. Conclusion 5D CS proved to allow up to three-fold acceleration retrospectively on 3.0 T data. 2-fold acceleration was demonstrated prospectively at 7.0 T to reach higher spatial resolution of 23Na MQC MRI..

Medienart:	E-Artikel

Erscheinungsjahr:	March 2024 2024
Erschienen:	March 2024

Enthalten in:	Zur Gesamtaufnahme - volume:91
Enthalten in:	Magnetic resonance in medicine - 91(2024), 3 vom: März, Seite 926-941

Sprache:	Englisch

Weiterer Titel:	Multidimensional compressed sensing to advance 23 Na multi-quantum coherences MRI

Beteiligte Personen:	Licht, Christian, 1993- [VerfasserIn] Reichert, Simon, 1994- [VerfasserIn] Guye, Maxime [VerfasserIn] Schad, Lothar R., 1956- [VerfasserIn] Rapacchi, Stanislas [VerfasserIn]

Links:	Volltext [kostenfrei] Volltext [kostenfrei]

Themen:	Compressed sensing MRI Neuroimaging Single and triple quantum imaging Sodium multi-quantum coherences

Anmerkungen:	Online veröffentlicht: 26. Oktober 2023 Die Zahl 23 ist im Titel hochgestellt Gesehen am 07.03.2024

Umfang:	Illustrationen 16

doi:	10.1002/mrm.29902

funding:
Förderinstitution / Projekttitel:

PPN (Katalog-ID):	188287059X

Internformat


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520			\|a Purpose Sodium (23Na) multi-quantum coherences (MQC) MRI was accelerated using three-dimensional (3D) and a dedicated five-dimensional (5D) compressed sensing (CS) framework for simultaneous Cartesian single (SQ) and triple quantum (TQ) sodium imaging of in vivo human brain at 3.0 and 7.0 T. Theory and Methods 3D 23Na MQC MRI requires multi-echo paired with phase-cycling and exhibits thus a multidimensional space. A joint reconstruction framework to exploit the sparsity in all imaging dimensions by extending the conventional 3D CS framework to 5D was developed. 3D MQC images of simulated brain, phantom and healthy brain volunteers obtained from 3.0 T and 7.0 T were retrospectively and prospectively undersampled. Performance of the CS models were analyzed by means of structural similarity index (SSIM), root mean squared error (RMSE), signal-to-noise ratio (SNR) and signal quantification of tissue sodium concentration and TQ/SQ ratio. Results It was shown that an acceleration of three-fold, leading to less than 2×10\ 2\times 10 \ min of scan time with a resolution of 8×8×20 mm3\ 8\times 8\times 20\;\mathrmmm^3 \ at 3.0 T, are possible. 5D CS improved SSIM by 3%, 5%, 1% and reduced RMSE by 50%, 30%, 8% for in vivo SQ, TQ, and TQ/SQ ratio maps, respectively. Furthermore, for the first time prospective undersampling enabled unprecedented high resolution from 8×8×20 mm3\ 8\times 8\times 20\;\mathrmmm^3 \ to 6×6×10 mm3\ 6\times 6\times 10\;\mathrmmm^3 \ MQC images of in vivo human brain at 7.0 T without extending acquisition time. Conclusion 5D CS proved to allow up to three-fold acceleration retrospectively on 3.0 T data. 2-fold acceleration was demonstrated prospectively at 7.0 T to reach higher spatial resolution of 23Na MQC MRI.
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Multidimensional compressed sensing to advance 23Na multi-quantum coherences MRI / Christian Licht, Simon Reichert, Maxime Guye, Lothar R. Schad, Stanislas Rapacchi

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