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Creating Benchmark of Color Skin Viability Based on Digital Photograph Using Mini Mobile Medical Photo Studio

Theddeus O H Prasetyono1, Tessa Miranda2, Melinda Sari3

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|January 30, 2019
PubMed
Summary
This summary is machine-generated.

Digital photography benchmarks were established for living and nonliving skin color and texture. A total digital number (TDN) above 138.1 indicates nonliving skin, with texture index differing between viable and nonviable samples.

Keywords:
Free tissue flapsPhotographySkinSurgical, flap

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Area of Science:

  • Dermatology
  • Forensic Science
  • Medical Imaging

Background:

  • Establishing objective benchmarks for skin color and texture is crucial for differentiating living from nonliving tissue.
  • Digital photography offers a standardized method for capturing skin characteristics.

Purpose of the Study:

  • To set a benchmark for skin color and texture index using digital photographs for both living and nonliving skin.
  • To differentiate between viable and nonviable skin samples based on quantifiable image analysis.

Main Methods:

  • Utilized a standardized Mini Mobile Medical Photo Studio (MiniMoPS) prototype for consistent lighting conditions.
  • Analyzed digital photographs of 16 living and 16 cadaveric skin samples using ImageJ software.
  • Quantified color tone, components, and texture index, expressing results as total digital number (TDN).

Main Results:

  • The MiniMoPS prototype demonstrated consistent light intensity for reliable skin photography.
  • A total digital number (TDN) of 138.1 was identified as the optimal cutoff for distinguishing nonliving skin (sensitivity 81.3%, specificity 100%).
  • Cadaveric (nonliving) skin exhibited a significantly higher texture digital number (155.4 ± 25.0) compared to living skin (120 [80-135]; P = 0.001).

Conclusions:

  • A total digital number (TDN) greater than 138.1 serves as a reliable indicator for nonliving skin.
  • The established texture index benchmarks are 120 for living skin and 155 for nonliving skin.