Skip to main content
Clinical Papers

A Randomized, Controlled Multicenter Study Evaluating Focused Ultrasound Treatment for Fat Reduction in the Flanks


Reference: Gold MH, Coleman WP 4th, Coleman WC 3rd, Weiss R. J Cosmet Laser Ther. 2018 Mar 13:1-5.

Study Details:

  • 46 subjects (8 males, 38 females), with mean age 45 ± 10 years, Fitzpatrick Skin Types II–V and body mass index 25 ± 2 (range 22–29)
  • 3 biweekly UltraShape treatments with small 12-gram transducer (USculpt) to unilateral flank (control flank untreated) with mean focal treatment zones (FTZ) of 2.7 ± 1 (range 1 to 6)
  • 2 blinded dermatologists reviewed the randomized digital clinical images (baseline, 16-week follow-up) for identification of baseline vs. treated & treated vs. untreated 
  • Skin caliper and ultrasound measurements post-treatment compared to baseline

Study Results:

  • 93% (42/45) of treated flanks vs control flanks correctly identified
  • 82% (37/45) of post-treatment images vs pre-treatment images correctly identified
  •  All study subjects demonstrated significant fat reduction in their treated area, as compared to untreated flanks (p<0.001) measured by ultrasound and skin caliper
  • Little or no discomfort, mean pain level of 0.38 ± 0.84 (scale of 0=no pain to 10) 
  • Transient erythema and edema associated with treatment, resolving within several days