Dynamic thermal imaging on actinic keratosis patients: A preliminary study. Issue 2 (25th October 2018)

• Record Type: Journal Article
• Authors: Baek, Yoo Sang; Kim, Jaeyoung; Song, Jin Young; Jeon, Jiehyun; Oh, Chil Hwan
• Is Part Of: Skin research and technology. Volume 25:Issue 2(2019)
• Page Start: 211
• Page End: 216
• Publication Date: 2018-10-25
• Subjects: actinic keratosis -- dynamic thermal imaging -- solar keratosis -- thermal imaging -- thermography; Skin -- Research -- Periodicals; Skin -- Diseases -- Periodicals; Skin -- Physiology -- Periodicals; 616.5
• DOI: 10.1111/srt.12640
• Languages: English
• ISSNs: 0909-752X

Abstract

Abstract: Background: Diagnosis of actinic keratosis (AK) based only on clinical findings can be misleading, and histopathological diagnosis results in scars. Dynamic thermal imaging is a potential non‐invasive tool for the diagnosis of AK. This imaging technique quantifies the infrared (IR) radiation emitted by a subject after exposure to external thermal stimuli, such as heat or cold. Methods: Twenty‐six histopathologically confirmed AK patients participated in the study. We compared the dynamic thermal images of AK lesions and normal skin (control sites). Temperature changes were plotted as a thermal response graph. After fitting exponential curves to the thermal response graph, the curve was converted to a logarithmic form. Results: Comparison of the early thermal response graphs of lesions and control sites showed faster thermal recovery of AK lesions. There was a significant difference in the gradient component of the calculated logarithmic equation between the AK lesions and control sites ( P < 0.001). Conclusion: Dynamic thermal imaging can be used as an auxiliary diagnostic tool for AK.