Segmentation methods for acne vulgaris images: Proposal of a new methodology applied to fluorescence images

Perís-Fajarnés, Guillermo; Santonja, María Moncho; García, Beatriz Defez; Lengua, Ismael Lengua

doi:10.1111/srt.12865

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…Porphyrins have the ability to expose red fluorescence when exposed to ultraviolet light. [6][7][8][9][10][11][12] This study aimed to determine the correlation between UV-induced skin damage and porphyrin levels in SMA Kalam Kudus II Jakarta, Indonesia.…”

Section: Introductionmentioning

confidence: 99%

Correlation between Facial Skin Damage Due to UV Exposure and Facial Skin Porphyrin Level: Study on Students of SMA Kalam Kudus II Jakarta, Indonesia

et al. 2023

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Background: UV exposure causes physical and chemical damage. UV causes damage to the skin barrier physically due to the heating process. Meanwhile, chemically, UV causes the formation of oxidants which are responsible for the process of oxidative stress. Damage to skin cells causes loss of the body's natural barrier against various threats from microorganisms. Propionibacterium acnes is one of the commensal bacteria on the skin, which will produce products in the form of porphyrins. This study aimed to determine the correlation between UV-induced skin damage and porphyrin levels in SMA Kalam Kudus II Jakarta, Indonesia. Methods: This study was an analytic observational study with a cross-sectional approach. A total of 92 research subjects who were students of SMA Kalam Kudus II Jakarta, Indonesia, participated in this study. Facial skin porphyrin levels and levels of facial skin damage due to sun exposure (UV damage proportion) as measured by a skin analyzer. UV damage and porphyrin assessments according to the T Zone and V Zone regions and obtained the average results from the 3 regions. Correlation analysis was performed with the help of SPSS software. Results: The higher the percentage of skin damage due to UV correlated positively with the higher the percentage of porphyrin levels, with a value of r = 0.529. Conclusion: There is a positive correlation between UV-induced skin damage and porphyrin levels in students of SMA Kalam Kudus II Jakarta, Indonesia.

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Section: Introductionmentioning

confidence: 99%

Correlation between Facial Skin Damage Due to UV Exposure and Facial Skin Porphyrin Level: Study on Students of SMA Kalam Kudus II Jakarta, Indonesia

et al. 2023

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“…Considerable efforts have been made by researchers and numerous acne assessment methods have been published, including clinical grading methods, lesion counting, and photographic and multispectral imaging methods. Nevertheless, a globally accepted set of measurement criteria is unavailable [5][6][7][8][9].…”

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confidence: 99%

A preliminary study on the evaluation of photodynamic diagnosis for acne inflammatory skin lesions

Xu,

Yuan,

Cheng

et al. 2023

Journal of Biophotonics

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ObjectiveThis study aimed to observe the fluorescence characteristics of acne inflammatory skin lesions in 5‐aminolevulinic acid‐based photodynamic diagnosis (ALA‐PDD), and discuss the viability of using ALA‐PDD to evaluate acne inflammatory skin lesions and explore the advantages of predicting subclinical skin lesions.MethodsThe OBSERV facial skin detector collected photographs of 20 patients before and after optical intra‐tissue fiber irradiation photodynamic therapy (OFI‐ALA‐PDT) in both ALA‐PDD and white light patterns. The patients were treated once a week for four consecutive weeks in order to analyze the correlation between the two patterns in recognizing inflammatory skin lesions.ResultsBefore and after treatment, there was no significant difference between the two patterns for recognizing acne inflammatory skin lesions (p > 0.05). Both patterns demonstrated a strong correlation (r > 0.90) for the recognition of various types of inflammatory skin lesions at different treatment stages.ConclusionALA‐PDD is a feasible method for evaluating acne inflammatory lesions, guiding treatment and judging efficacy. It has advantages in predicting subclinical skin lesions and deserves further study.

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Quantitative Assessment of Age-dependent Changes in Porphyrins from Fluorescence Images of Ultraviolet Photography by Image Processing

Akimoto

Igarashi³

et al. 2021

Photodiagnosis and Photodynamic Therapy

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Segmentation methods for acne vulgaris images: Proposal of a new methodology applied to fluorescence images

Cited by 3 publications

References 27 publications

Correlation between Facial Skin Damage Due to UV Exposure and Facial Skin Porphyrin Level: Study on Students of SMA Kalam Kudus II Jakarta, Indonesia

Correlation between Facial Skin Damage Due to UV Exposure and Facial Skin Porphyrin Level: Study on Students of SMA Kalam Kudus II Jakarta, Indonesia

A preliminary study on the evaluation of photodynamic diagnosis for acne inflammatory skin lesions

Quantitative Assessment of Age-dependent Changes in Porphyrins from Fluorescence Images of Ultraviolet Photography by Image Processing

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