Quantitative evaluation of atrophic acne scars using 3D image analysis with reflected LED light

Area of Science:

• Dermatology
• Medical Imaging
• Aesthetic Medicine

Background:

• Objective evaluation methods for acne scars are currently lacking.
• This study investigates the potential of 3D image analysis for assessing acne scarring.

Purpose of the Study:

• To examine the capability of 3D image analysis in evaluating acne scarring.
• To determine the correlation between objective 3D measurements and dermatologists' assessments of acne scars.

Main Methods:

• Two dermatologists assessed atrophic acne scar severity and count in a defined cheek area (3.5cm x 3.5cm) for 22 subjects.
• An Antera 3D camera captured images, measuring affected area, volume, and maximum depth using different filters.
• Spearman's correlation coefficients analyzed relationships between 3D parameters and dermatological evaluations.

Main Results:

• The 'large' filter demonstrated the highest correlation with dermatologists' evaluations.
• Strong correlations were found between scar severity and affected area (0.736), volume (0.728), and max depth (0.722).
• Scar counts correlated highly with affected area (0.783) and volume (0.770), indicating good repeatability.

Conclusions:

• 3D image analysis shows significant capability for objective acne scar evaluation.
• This technology can quantitatively assess changes in scar morphology before and after treatment.