Automated tuning of an eight-channel cardiac transceive array at 7 tesla using piezoelectric actuators

摘要

PurposeUltra-high field (UHF) MR scanning in the body requires novel coil designs due to B-1 field inhomogeneities. In the transverse electromagnetic field (TEM) design, maximum B-1 transmit power can only be achieved if each individual transmit element is tuned and matched for different coil loads, which requires a considerable amount of valuable scanner time.