頭部単純写真の心理的評価(システムの感度と画質について)

概要

論文の詳細を見る
Routine skull radiographs (A-P projection) were imaged by use of a head phantom and seven screen-film systems to assess the relationship between the physical image quality of a radiograph and its psychological evaluation. Three hundred and fifty skull radiographs were evaluated by five neurosurgeons and five radiologic technologists. The redundancy of information theory was used in the analysis of psychological evaluation. As compared with radiographs imaged by rare earth screen systems, those imaged by calcium tungstate screens were given a high value of subjective image evaluation. Neurosurgeons attached more importance to the graininess than the sharpness of the radiograph. Radiologic technologists had a similar tendency to neurosurgeons,but attached more importance to the sharpness in comparison with the evaluations made by neurosurgeons. If a screen-film system with a higher speed than that of the present system (LHII-RX) used in our hospital were to have good granularity, despite having less sharpness, it was shown that such a system could be used in routine skull radiography.
社団法人日本放射線技術学会の論文
1986-05-01