Local multi-transmit arrays at 3T provide reduced power requirements and reduced local SAR. However, it requires 3T scanners with multi-transmit functionality which are rare. This work presents add-on hardware that enables the use of local transmit/receive arrays. An exploration on prostate imaging with fixed phase settings using a 8-channel dipole array has been performed on four subjects. B1+ levels range from 5 to 8.5 uT for 8 x 215-300 W input power. T2w images have been acquired successfully for each subject. The modest inter-subject variation in B1+ demonstrates the feasibility of this approach.
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