A new imaging technique for assessment of the effectiveness of long pulse Nd:YAG 532 nm laser in treatment of facial port wine stain

• Published in: Journal of cosmetic and laser therapy 2017-11, Vol.19 (7), p.418-421
• Main Authors: Al-Janabi, Murtadha Hashim, Ismaeel Ali, Noor Taha, Mohamed Al-Sabti, Karrar Deiaa, Al-Dhalimi, Muhsin A, Abdul Wahid, Sahib Neamh
• Format: Article
• Language: English
• Subjects: Adolescent; Adult; Child; Face; Female; Follow-Up Studies; Humans; Image Processing, Computer-Assisted - methods; Lasers, Solid-State - adverse effects; Lasers, Solid-State - therapeutic use; Low-Level Light Therapy - adverse effects; Low-Level Light Therapy - methods; Male; Middle Aged; Photography; Port-Wine Stain - diagnostic imaging; Port-Wine Stain - radiotherapy; Signal-To-Noise Ratio; Treatment Outcome; Young Adult
• ISSN: 1476-4172; 1476-4180
• DOI: 10.1080/14764172.2017.1341985

PWS is a vascular malformation presented at birth and associated with a psychological problem to the patients. Many types of laser systems were used to solve this problem. To assess the efficacy of long-pulsed Nd:YAG 532-nm laser in the treatment of port wine stain both clinically and by imaging technique. This is an interventional therapeutic clinical study for the treatment of facial port-twine stain with long-pulsed, 532-nm, Nd:YAG laser. The treatment sessions were done every 4 weeks for 12 sessions and follow-up after 3 months of the last session. The assessment of the response was done before and at the end of follow-up period, both objectively (percent of improvement, photo comparison by using PSNR) and subjectively (patient satisfaction). Sixteen patients completed all sessions of the treatment. The improvement score for the PWS were failure = 0%, mild = 6.25%, moderate = 12.5%, good = 31.25%, and excellent = 50%. The values of PSNR for all the patients have been recorded and were fewer than 25 which means that the response for the treated lesions was very good. The long-pulsed Nd:YAG laser 532 nm is an effective and safe method of treatment of facial PWSs without significant residue. The PSNR was a new, simple, cheap and noninvasive method for assessment of the response of PWSs to laser therapy.