A newly developed multi-channel MOSFET RF transmission system provides sufficient amplification (18.7 dB at 300 MHz) for small animal parallel excitation applications at 7 T.
Technical capability shown for small-animal 7T parallel excitation; leaves open in vivo validation and clinical translation.
In this work, we developed and tested a multi‐channel radio frequency (RF) transmission system with compact metal‐oxide semiconductor field effect transistor (MOSFET) amplifiers for parallel excitation in 7 T animal MRI scanner. The system is composed of a multi‐channel RF controller and four independent RF power amplifiers. Each power amplifier contains two amplification stages. The design was validated by simulation and bench test. The power gain for the amplifier is 18.7 dB at 300 MHz, demonstrating the sufficient amplification capability of the transmission system for small animal parallel excitation applications at 7 T. This compact RF power amplifier can be potentially used for on‐coil amplification in multichannel RF array system.
No takes yet. Share an insight, caveat, or question.
Zhang et al. (2015) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: