Daniel James Lee1, Paul M. Glover1
1Physics and Astronomy, University of Nottingham, Nottingham, Nottinghamshire, United Kingdom
Multi-transmit systems are becoming more popular as scanners move to higher field strengths, but one of the main costs is purchasing RF amplifiers. This expense increases with both the number of channels and the peak power of the amplifiers. Using a combination of some simple simulations and basic MR physics it is possible to establish a rough estimate of the peak power required from amplifiers for multi-transmit systems. The values obtained from such calculations are two to three times higher than amplifier values currently in use, but still allow for an informed decision when buying a multi-transmit system.
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