Comparative Study of Image Performance for Digitized Image Archiving No.2 : Image evaluation on dental radiographs and CRT imaging in apical periodontitis
Electronic image-reading and storing of radiographs obtained in the field of stomatology is a goal in dental radiology. Using a popular-type image scanner with an 8-bit intensity level, original dental radiographs and images on a CRT monitor have been compared and evaluated visually. To make this evaluating method more concrete, the optimal conditions for image scanning were obtained, then, using actual images on apical periodontitis and the receiver operating characteristics (ROC) analysis, more objective evaluation of the original radiographs and CRT images was attempted. The dental radiographs were converted to electronic signals, and images on CRT were evaluated by the ROC analysis. The evaluations were similar to those obtained with the dental radiographs. In the examination of apical periodontitis, image-reading and diagnosis on CRT is feasible. It appears to be important for the observer to have sufficient priorunderstanding of the characteristics of the scanner and that the radiographic imaging be performed with an adequate X-ray dose.
歯科用X線フィルムの電子保管のための画像評価 第2報 根尖病単におけるデンタルX線フィルムとCRT画像との画像評価
matsumoto_shigaku_23-01-05.pdf
(283.52KB)
