HIFES and Sync RF+ Technology for Submental Volume Reduction: MRI Study.

Background: Excessive weight gain, aging-related skin laxity, and weakened digastric muscle contribute to the formation of submental fullness.

Objectives: This study aims to investigate the efficacy and safety of combined HIFES and Sync RF+ energies for submental volume reduction, and in addition to examine HIFES and Sync RF treatment's effect on fat volume in the cheeks area.

Methods: Thirty-three subjects (n=33) received 4 treatments once weekly, on the submental and cheek area. 2D and 3D photographs were taken at baseline, after the 4th treatment and at both follow-ups at 1 and 3 months post-treatment. The MRI scanning took place at baseline, and both follow-ups.

Results: The overall submental volume decreased by 25.12% at 1 month and 36.20% at 3 months. The submental fat decreased by 20.54% at 1 month, and by 30.37% at 3 months. The average volume reduction assessed using 3D photography evaluation was 3.48 ± 3.60 ml immediately after the 4th treatment, 5.39 ± 5.93 ml at 1 month, and 10.25 ± 5.40 ml at 3 months. The mean CR-SMFRS grade improved by 0.56 ± 0.42 after the 4th treatment, at 1 month by 0.85 ± 0.53, and at 3 months by 1.03 ± 0.50 points. 84.8% of subjects found the treatment comfortable and 93.9% were satisfied with the treatment results.

Conclusions: Study findings suggest this novel approach as a notable option for submental volume reduction, indicating HIFES and Sync RF+ technology is capable of aesthetic enhancement as well as skin and muscle improvement.