Computer analysis in oral lichenoid reactions

Authors

  • Ulf Mattsson Department of Oral Pathology, Department of Endodontology/Oral Diagnosis, Mednet Laboratory, University of Göteborg, Göteborg, Sweden; Department of Applied Electronics, Chalmers University of Technology, Göteborg, Sweden; Hasselblad Electronic Imaging AB, Göteborg, Sweden
  • Guy Heyden Department of Oral Pathology, Department of Endodontology/Oral Diagnosis, Mednet Laboratory, University of Göteborg, Göteborg, Sweden; Department of Applied Electronics, Chalmers University of Technology, Göteborg, Sweden; Hasselblad Electronic Imaging AB, Göteborg, Sweden
  • Artur Chodorowski Department of Oral Pathology, Department of Endodontology/Oral Diagnosis, Mednet Laboratory, University of Göteborg, Göteborg, Sweden; Department of Applied Electronics, Chalmers University of Technology, Göteborg, Sweden; Hasselblad Electronic Imaging AB, Göteborg, Sweden
  • Tomas Gustavsson Department of Oral Pathology, Department of Endodontology/Oral Diagnosis, Mednet Laboratory, University of Göteborg, Göteborg, Sweden; Department of Applied Electronics, Chalmers University of Technology, Göteborg, Sweden; Hasselblad Electronic Imaging AB, Göteborg, Sweden
  • Mats Jontell Department of Oral Pathology, Department of Endodontology/Oral Diagnosis, Mednet Laboratory, University of Göteborg, Göteborg, Sweden; Department of Applied Electronics, Chalmers University of Technology, Göteborg, Sweden; Hasselblad Electronic Imaging AB, Göteborg, Sweden
  • Folke Bergquist Department of Oral Pathology, Department of Endodontology/Oral Diagnosis, Mednet Laboratory, University of Göteborg, Göteborg, Sweden; Department of Applied Electronics, Chalmers University of Technology, Göteborg, Sweden; Hasselblad Electronic Imaging AB, Göteborg, Sweden

DOI:

https://doi.org/10.3109/00016359409029060

Keywords:

Computer analysis, dentistry, mouth diseases, mucosal lesions

Abstract

Mattsson U, Heyden G, Chodorowski A, Gustavsson T, Jontell M, Bergquist F. Computer analysis in oral lichenoid reactions. Acta Odontol Scand 1994;52:86-92. Oslo. ISSN 0001-6357

To improve diagnostic procedures and facilitate clinical decision-making, computer-assisted image analysis was performed on color slides from 30 patients with histopathologically verified oral lichenoid reactions. Areas from white hyperkeratotic and adjacent red inflamed areas of the lesions were selected and subjected to image analysis. The digitization of the color slides was done by means of an image scanner, and the digital information was transmitted to a personal computer for subsequent feature extraction and analysis. The different oral lesions were characterized as the difference in mean values between white hyperkeratotic and red inflamed areas, respectively, compared with clinically normal tissue. Statistical analyses were made on three different color systems: Red-Green-Blue (RGB), normalized red-green-blue (rgb), and Intensity-Hue-Saturation (IHS). The results showed statistically significant differences in all color systems for both the hyperkeratotic areas and adjacent inflammatory reactions. A linear correlation was obtained when the results of the image analysis of color variations were compared with a clinical score system for hyperkeratosis and inflammation evaluated by two investigators independently.

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Published

1994-01-01

Issue

Vol. 52 No. 2 (1994): Acta Odontologica Scandinavica

Section

Articles