Detection of approximal caries in digital radiographs before and after correction for attenuation and visual response. An in vitro study

G. Li, K. Yoshiura, U. Welander, X. Q. Shi, W. D. McDavid

研究成果: Contribution to journalArticle査読

26 被引用数 (Scopus)

抄録

Objective: To evaluate if digital compensation for exponential attenuation and the characteristics of the human visual system improves the diagnosis of approximal caries from digital radiographs. Material and methods: Forty premolar teeth were mounted in plaster blocks. Radiographs of the teeth were exposed with the Dixi digital intraoral system employing a Prostyle Intra dental X-ray unit (Planmeca Oy, Helsinki, Finland). Thirteen radiographs were then processed to compensate for the exponential attenuation and for the characteristic of the human visual system using equations presented in the paper. Ten observers were asked to diagnose approximal caries in all radiographs. ROC analyses were performed. The teeth were subsequently sectioned for histological validation of the lesions. The areas under ROC curves of original and processed radiographs were compared and analysed using Wilcoxon's signed-ranks test. Results: There were significant diagnostic differences between the two types of radiographs (all lesions P = 0.005, enamel P = 0.028, and dentine P = 0.050). Conclusion: Digital radiographs processed to compensate for exponential attenuation and the characteristics of the human visual system significantly improves the diagnosis of approximal caries in vitro.

本文言語英語
ページ(範囲)113-116
ページ数4
ジャーナルDentomaxillofacial Radiology
31
2
DOI
出版ステータス出版済み - 3 1 2002

All Science Journal Classification (ASJC) codes

  • 耳鼻咽喉科学
  • 放射線学、核医学およびイメージング
  • 歯科学(全般)

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