Abstract #0395

Body imaging at 7 Tesla with much lower SAR levels: an introduction of the Snake Antenna array

Bart Steensma¹, Alexa Viviana Obando Andrade², Dennis Klomp¹, Nico van den Berg¹, Peter Luijten¹, and Alexander Raaijmakers¹

¹University Medical Centre Utrecht, Utrecht, Netherlands, ²TU Delft, Utrecht, Netherlands

The snake antenna is introduced as a novel transmit array element for body-imaging at ultrahigh-field strengths. It has been shown in simulations that the snake antenna causes a very low local peak SAR compared to the fractionated dipole antenna, while maintaining sufficient B₁⁺-signal strength. In vivo prostate scans show that the snake antenna array reaches a B1+-signal strength in the prostate that is slightly higher than the signal strength reached by the fractionated dipole antenna array. The lower SAR of the snake antenna considerably relaxes scanning constraints for body imaging.

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