| Zugriffsnummer | 48604 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | On the complexity of pTx systems in SAR assessment |
| Autor(in); Institution |
Petzold, Johannes; 8.1, Biomedizinische Magnetresonanz, PTB-Berlin
|
| Quelle/Jahr | Proceedings of the International Society for Magnetic Resonance in Medicine: 30 (2022), 4 S. |
| Artikelnummer | 2555 |
| Availability | [online only] |
| ISSN | 1545-4428 (ONLINE) |
| DOI | |
| Konferenzangaben | 31st Joint Annual Meeting ISMRM-ESMRMB & ISMRT, London, 07-12, May, 2022, UK |
| Zusammenfassung | Different methods for SAR control (SAR limit, phase-agnostic SAR limit, amplitude limit) are evaluated in a simulation study of parallel transmit (pTx) body coil systems (2,4, or 8 channels) at different B0 (0.5T, 1.5T, 3T). Criteria are the necessary safety factors to accommodate for subject variability, and the resulting mean(B1+). Due to the high safety factor necessary for a phase-based SAR limit, its mean(B1+) performance becomes effectively the same as the much simpler to implement amplitude limit. |
