HIFU
Pronunciation: HY-fyoo
Also written as: HIFU — High-Intensity Focused Ultrasound
Abbreviation for High-Intensity Focused Ultrasound, a non-invasive energy-based device used in cosmetic dermatology to induce targeted thermal coagulation points in the dermis and superficial musculoaponeurotic system, promoting skin tightening.
Full Definition
High-Intensity Focused Ultrasound (HIFU) converges ultrasonic energy to precise focal depths—typically 1.5 mm, 3 mm, and 4.5 mm—creating micro-coagulation zones that stimulate neocollagenesis and myofibroblast contraction without disrupting the overlying epidermis. In cosmetic dermatology, HIFU is marketed primarily for non-surgical brow lifting, jowl tightening, and neck tightening; Ultherapy is the best-known branded platform. Editors must not conflate HIFU with therapeutic ultrasound (used in physiotherapy) or diagnostic ultrasound; in dermatology documents, HIFU always refers to the cosmetic tissue-tightening application. The abbreviation should be expanded on first use. 'HIFU' is always uppercase; 'Ultherapy' is a registered trademark and must be capitalised.
Usage
Usage note: Always expand on first use. Do not confuse with physiotherapy or diagnostic ultrasound. Ultherapy® is a trademark and must be capitalised with trademark notation in commercial copy.
In Context
- "The article used 'HIFU' without expansion; the editor inserted 'High-Intensity Focused Ultrasound (HIFU)' at first mention per journal convention." — Peer-reviewed journal manuscript
- "The advertising copy described Ultherapy as a 'radiofrequency treatment'; the editor corrected this to 'High-Intensity Focused Ultrasound (HIFU) treatment'." — Clinic advertising copy