| Zugriffsnummer | 52863 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Calibration-free pTx of the cervical, thoracic, and lumbar spinal cord at 7T |
| Autor(in); Institution |
Alarcon, Manuel Fernando Sánchez; 8.1, Biomedizinische Magnetresonanz, PTB-Berlin; Charité Universitätsmedizin Berlin, Berlin, GERMANY
D'Astous, Alexandre; NeuroPoly Lab, Institute of Biomedical Engineering, Polytechnique Montréal, Montreal, CANADA; Centre de recherche du CHU Sainte-Justine, Université de Montréal, Montréal, QC, CANADA
Alonso-Ortiz, Eva; NeuroPoly Lab, Institute of Biomedical Engineering, Polytechnique Montréal, Montreal, CANADA; Centre de recherche du CHU Sainte-Justine, Université de Montréal, Montréal, QC, CANADA
Cohen-Adad, Julien; NeuroPoly Lab, Institute of Biomedical Engineering, Polytechnique Montréal, Montreal, CANADA; Centre de recherche du CHU Sainte-Justine, Université de Montréal, Montréal, QC, CANADA; Functional Neuroimaging Unit, CRIUGM, Université de Montréal, Montréal, QC, CANADA
|
| Quelle/Jahr | Proceedings of the International Society for Magnetic Resonance in Medicine:(2024), 1 - 2 |
| Artikelnummer | 1413 |
| ISSN | 1065-9889 (online) ; (online) |
| DOI | |
| Verlag | ISMRM |
| Konferenzangaben | ISMRM & ISMRT Annual Meeting & Exhibition, Singapore, 04-09, May, 2024, Singapore |
| Freie Schlagworte | parallel transmit & multiband ; 7 Tesla ; spinal cord ; universal shim |
| Zusammenfassung | Motivation: Addressing the issue of lengthy parallel transmit (pTx) adjustment times caused by the absence of a dedicated spinal cord (SC) coil setting, which limits SC imaging at ultra-high field. Goal(s): Enhance imaging efficiency by universal shim modes that can be applied without the need for additional adjustment time for different SC regions and coils. Approach: We have built a library of channel-wise B1+ maps and optimized universal RF shims to optimize transmit homogeneity and efficiency. Results: The proposed universal shims significantly improve B1+ efficiency, achieving a 50% enhancement compared to the default shim mode, while eliminating the need for subject-specific pTx adjustments. Impact: The development of universal shims not only enhances SC imaging efficiency at ultra-high field but also streamlines the process by eliminating lengthy subject-specific pTx adjustments, expecting SC imaging to become more usable for non-pTx experts. |
Zitierung
Aigner, C. S., Alarcon, M. F. S., D'Astous, A., Alonso-Ortiz, E., Cohen-Adad, J., & Schmitter, S. (2024). Calibration-free pTx of the cervical, thoracic, and lumbar spinal cord at 7T. ISMRM & ISMRT Annual Meeting & Exhibition, Singapore, 04-09, May, 2024, Singapore. https://doi.org/10.58530/2024/1413