The effects of RF coils and SAR supervision strategies for clinically applicable nonselective parallel‐transmit pulses at 7 T

• Published in: Magnetic resonance in medicine Vol. 89; no. 5; pp. 1888 - 1900
• Main Authors: Herrler, Jürgen, Williams, Sydney N., Liebig, Patrick, Ding, Belinda, McElhinney, Paul, Allwood‐Spiers, Sarah, Meixner, Christian R., Gunamony, Shajan, Maier, Andreas, Dörfler, Arnd, Gumbrecht, Rene, Porter, David A., Nagel, Armin M.
• Format: Journal Article
• Language: English
• Published: United States Wiley Subscription Services, Inc 01.05.2023
• Subjects: Absorption; Adiabatic; Adiabatic flow; Coils; Computer Simulation; Data acquisition; Electromagnetic Fields; fast online customized (FOCUS) pulses; Heart Rate; Humans; Imaging, Three-Dimensional; Low frequency; Magnetic Resonance Imaging; parallel transmission (pTx); Phantoms, Imaging; Radio Waves; radiofrequency (RF) coils; Simulation; Supervision; UHF MRI; universal pulses (UPs); Virtual humans; virtual observation points (VOPs); universal pulses (UPs); radiofrequency (RF) coils; parallel transmission (pTx); virtual observation points (VOPs); fast online customized (FOCUS) pulses; UHF MRI

Purpose To investigate the effects of using different parallel‐transmit (pTx) head coils and specific absorption rate (SAR) supervision strategies on pTx pulse design for ultrahigh‐field MRI using a 3D‐MPRAGE sequence. Methods The PTx universal pulses (UPs) and fast online‐customized (FOCUS) pulses...