Ontology highlight
ABSTRACT:
SUBMITTER: Guerin B
PROVIDER: S-EPMC3871989 | biostudies-literature | 2014 Apr
REPOSITORIES: biostudies-literature
Guérin Bastien B Gebhardt Matthias M Cauley Steven S Adalsteinsson Elfar E Wald Lawrence L LL
Magnetic resonance in medicine 20130614 4
<h4>Purpose</h4>We propose a constrained optimization approach for designing parallel transmit (pTx) pulses satisfying all regulatory and hardware limits. We study the trade-offs between excitation accuracy, local and global specific absorption rate (SAR), and maximum and average power for small flip-angle pTx (eight channels) spokes pulses in the torso at 3 T and in the head at 7 T.<h4>Methods</h4>We compare the trade-offs between the above-mentioned quantities using the L-curve method. We use ...[more]