Journal
APPLIED MAGNETIC RESONANCE
Volume -, Issue -, Pages -Publisher
SPRINGER WIEN
DOI: 10.1007/s00723-023-01588-x
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In this work, single-sided, low-field nuclear magnetic resonance (NMR) was used to analyze the thickness and collagen structure of healthy and scarred skin. T-2 relaxation profiles quantification of porcine skin thickness was as accurate as standard histological techniques. The technique effectively identified different types of scar and differences in thickness between moderate hypertrophic scars and healthy skin.
Monitoring of skin scar thickness and structural properties is desirable when assessing the efficacy of the healing process. In this work, we report the use of single-sided, low-field nuclear magnetic resonance (NMR) for the analysis of the thickness and collagen structure of healthy and scarred skin. Acquisition of T-2 relaxation profiles was proven to provide quantification of porcine skin thickness as accurate as standard histological techniques. Subsequent analysis of human participants highlighted the utility of this technique for identifying different types of scar and in identifying differences between the thickness of moderate hypertrophic scars and healthy skin. Using bead packings as a model system, determination of the surface-to-volume (S/V) ratio and tortuosity (k) was successfully measured on the single-sided apparatus based on time-resolved diffusion analysis. Application of this method to human skin was able to detect regional differences in collagen structures, consistent with qualitative expectations. It was also able to differentiate between healthy and scarred skin tissue. Preliminary results indicated that scarred tissue exhibited decreased S/V ratios and tortuosities, which is coherent with the formation of less-aligned collagen within scar tissue and indicated the potential for this technique to differentiate scar types. This novel application of single-sided low-field NMR has the potential to be deployed in clinical settings for the differentiation of scar types and for the assessment and monitoring of skin scarring and healing.
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