Volumetric 23Na single and triple-quantum Imaging at 7T: 3D-CRISTINA
Purpose - To measure multi-quantum coherence (MQC) 23Na signals for noninvasive cell physiological information in the whole-brain, the 2D-CRISTINA method was extended to 3D. This experimental study investigated the use and results of a new sequence, 3D-CRISTINA, on a phantom and healthy volunteers....
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| Main Authors: | , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
May 2022
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| In: |
Zeitschrift für medizinische Physik
Year: 2022, Volume: 32, Issue: 2, Pages: 199-208 |
| ISSN: | 1876-4436 |
| DOI: | 10.1016/j.zemedi.2021.09.001 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.zemedi.2021.09.001 Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S0939388921000830 
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| Author Notes: | Michaela A.U. Hoesl, Lothar R. Schad, Stanislas Rapacchi |
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| 245 | 1 | 0 | |a Volumetric 23Na single and triple-quantum Imaging at 7T: 3D-CRISTINA |c Michaela A.U. Hoesl, Lothar R. Schad, Stanislas Rapacchi |
| 246 | 3 | 3 | |a Volumetric 23 Na single and triple-quantum Imaging at 7 T: 3D-CRISTINA |
| 264 | 1 | |c May 2022 | |
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| 520 | |a Purpose - To measure multi-quantum coherence (MQC) 23Na signals for noninvasive cell physiological information in the whole-brain, the 2D-CRISTINA method was extended to 3D. This experimental study investigated the use and results of a new sequence, 3D-CRISTINA, on a phantom and healthy volunteers. - Methods - The 3D Cartesian single and triple-quantum imaging of 23Na (3D-CRISTINA) was developed and implemented at 7T, favoring a non-selective volume excitation for increased signal-to-noise ratio (SNR) and lower energy deployment than its 2D counterpart. Two independent phase cycles were used in analogy to the 2D method. A comparison of 6-steps cycles and 12-steps cycles was performed. We used a phantom composed of different sodium and agarose concentrations, 50mM to 150mM Na+, and 0-5% agarose for sequence validation. Four healthy volunteers were scanned at 7T for whole brain MQC imaging. The sequence 3D-CRISTINA was developed and tested at 7T. - Results - At 7T, the 3D-CRISTINA acquisition allowed to reduce the TR to 230ms from the previous 390ms for 2D, resulting in a total acquisition time of 53min for a 3D volume of 4×4×8mm resolution. The phase cycle evaluation showed that the 7T acquisition time could be reduced by 4-fold with moderate single and triple-quantum signals SNR loss. The healthy volunteers demonstrated clinical feasibility at 7T and showed a difference in the MQC signals ratio of White Matter (WM) and Grey Matter (GM). - Conclusion - Volumetric CRISTINA multi-quantum imaging allowed whole-brain coverage. The non-selective excitation enabled a faster scan due to a decrease in energy deposition which enabled a lower repetition time. Thus, it should be the preferred choice for future in vivo multi-quantum applications compared to the 2D method. A more extensive study is warranted to explore WM and GM MQC differences. | ||
| 650 | 4 | |a Sodium MRI | |
| 650 | 4 | |a Sodium triple-quantum imaging | |
| 650 | 4 | |a Whole-brain imaging | |
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| 700 | 1 | |a Rapacchi, Stanislas |e VerfasserIn |0 (DE-588)1249963796 |0 (DE-627)1786606755 |4 aut | |
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