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Correlation between clinical scoring of allergic patch test reactions and optical coherence tomography
Thilo Gambichler1, Georg Moussa, Michael Sand
1Ruhr-Universität Bochum, Department of Dermatology and Allergology, Bochum 44791 Germany. t.gambichler@klinikum-bochum.de
Journal of Biomedical Optics
|January 18, 2006
Summary
Optical coherence tomography (OCT) shows distinct skin changes in acute allergic contact dermatitis (AACD). These OCT findings correlate with clinical patch test severity, suggesting OCT
Area of Science:
- Dermatology
- Medical Imaging
- Immunology
Background:
- Cutaneous inflammatory conditions like contact dermatitis require effective noninvasive monitoring.
- Optical coherence tomography (OCT) offers potential for in vivo skin imaging.
Purpose of the Study:
- To evaluate acute allergic contact dermatitis (AACD) using optical coherence tomography (OCT).
- To correlate OCT findings with the clinical grading of patch test reactions.
Main Methods:
- Conventional OCT scanner used to investigate 20 positive patch test reactions.
- Comparison of OCT imaging between affected sites and control sites.
- Correlation analysis between OCT findings and clinical patch test grading.
Main Results:
- OCT revealed pronounced skin folds, thickened/disrupted entrance signals, and increased epidermal thickness in AACD.
- Signal-free epidermal cavities and reduced dermal reflectivity were observed via OCT.
- Reduced dermal reflectivity significantly correlated with clinical patch test severity.
Conclusions:
- OCT effectively visualizes micromorphological features of AACD.
- OCT shows promise as an objective tool for assessing patch test reactions.
- Further studies correlating OCT, clinical grading, and histopathology are needed for objective grading.
