Standardized universal pulse: A fast RF calibration approach to improve flip angle accuracy in parallel transmission

• Published in: Magnetic resonance in medicine Vol. 87; no. 6; pp. 2839 - 2850
• Main Authors: Le Ster, Caroline, Mauconduit, Franck, Massire, Aurélien, Boulant, Nicolas, Gras, Vincent
• Format: Journal Article
• Language: English
• Published: United States Wiley Subscription Services, Inc 01.06.2022
• Subjects: Accuracy; Algorithms; Brain; Calibration; Coefficient of variation; Databases, Factual; Homogeneity; Humans; Linear transformations; Magnetic Resonance Imaging; MP2RAGE; parallel transmission; Phantoms, Imaging; Radio frequency; Radio Waves; RF pulse design; ultra‐high field; universal pulse; universal pulse; RF pulse design; parallel transmission; ultra-high field; MP2RAGE

Purpose In parallel transmission (pTX), subject‐tailored RF pulses allow achieving excellent flip angle (FA) accuracy but often require computationally extensive online optimizations, precise characterization of the static field (ΔB0), and the transmit RF field (B1+) distributions. This costs time a...