新オルソ・システムを用いた被曝線量低減の検討(5):胸部臨床写真の観察評価による高温現像の可能性についての検討

概要

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Recently, new ortho screenfilm systems (Konica EX system, Fuji AD system and Kodak IEF system) are being developed. The granualities of these systems have been greatly improved and gross fogs are lower than those of traditional ortho screen-film systems. Even if radiographs with the new ortho screen-film systems a re processed at higher temperature than with the old ortho systems, deterioration in the image quality is negligible. Futhermore, the speed of the screen-film systems increases as the developing temperature rises. Therefore, there may be the potential to reduce patients's radiation exposure dose without greatly decreasing the image quality. In this report, vol u nteers' clinical chest radiographs were processed at various developing temperatures and the comments about the higher limit of developing temperature were solicited from medical doctors who evaluated them. Consequently, it has been confirmed that image quality is sufficient in the radiogrphs which processed at the significant higher developing temperature than at the temperature used in many facilities now. Therefo re, it has been confirmed that there is the possible reduction of patients's radiation exposure dose by increasing developing temperature.
Japan Society of Medical Physicsの論文