High‐frequency (20 MHz) high‐intensity focused ultrasound: New ablative method for color‐independent tattoo removal in 1‐3 sessions. An open‐label exploratory study

Autor:	Torsten Bove, Tomasz Zawada, Alexander Jessen, Mattia Poli, Jørgen Serup
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	Extracorporeal Shockwave Therapy medicine.medical_specialty procedure medicine.medical_treatment Dermatologic Surgical Procedures adverse event effectiveness wound healing Dermatology Lasers Solid-State 01 natural sciences picosecond laser scar law.invention 010309 optics 030207 dermatology & venereal diseases 03 medical and health sciences Hypertrophic scar Cicatrix 0302 clinical medicine law 0103 physical sciences Ablative case medicine Humans pain Hifu ablation Skin Tattooing business.industry tattoo pigment Tattoo removal Original Articles Laser medicine.disease High-intensity focused ultrasound medicine.anatomical_structure Dermatome Original Article Radiology Open label business guidance YAG laser
Zdroj:	Skin Research and Technology
ISSN:	1600-0846 0909-752X
Popis:	Background High‐intensity focused ultrasound (HIFU) operating at 20 MHz is new and potentially applicable to ablative tattoo removal. The method was documented safe and rational in preclinical testing. Materials and Methods High‐intensity focused ultrasound was introduced to subjects when lasers and dermatome shaving had failed or caused side effects. Transducers with focal depths between 1.1 mm and 1.7 mm in the skin were used, and settings of 0.4‐1.2 J/shot at pulse durations of 150 ms were applied. Tattoos were covered with synergistic “shoulder‐by‐shoulder” focused ultrasound shots. Effectiveness and side effects were measured. Results Twenty‐two subjects with 67 tattoos were treated. 62% benefitted (19% cleared, 43% partially cleared), and 28% had minor effect. VAS pain was 5‐6 versus 7‐9 with previous lasers removal. Wound healing was longer after HIFU ablation (1‐3 months). 57% of subjects had no scar or minor visible changes of skin surface markings only, while 19% had moderate or major skin thickening. Hypertrophic scar or keloid scars were not observed. Discussion/Conclusion High‐intensity focused ultrasound was effective in removal of difficult tattoos of any color where Nd:YAG lasers had failed. The method only needs 1‐3 sessions. As an ablative method, the wound healing period is longer than with laser removal and needs attention. Focused ultrasound can be used as a first‐line treatment of smaller tattoos independent of color, and second line when Nd:YAG lasers have failed or caused problems. The operator shall be qualified, as with lasers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa81b7e909b3b9844b6173c3511cc2cd http://europepmc.org/articles/PMC7754334 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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