Comparison of a Current Source and a Voltage source in Transmit SENSE
Wright S, Nam H
Texas A&M University
: A resonant coil fed by a standard voltage amplifier has been used for RF transmission in MR imaging. However coupling effect in array elements makes it difficult to implement parallel transmission with multiple coils. A novel approach to avoid effect of coupling between transmit array elements is to use RF current sources driving non-resonant structures. This study presents an analysis of a RF current source driving a non-resonant coil and a conventional voltage amplifier driving a resonant coil and shows the advantages of the current source in parallel transmission.