歯科用エックス線撮影装置の品質管理を目指した実態調査

• Published in: Shika Hoshasen Vol. 50; no. 3; pp. 21 - 26
• Main Authors: 板垣, 恵輔, 四井, 資隆, 古跡, 孝和, 秋山, 広徳, 清水谷, 公成, 蒲生, 祥子
• Format: Journal Article
• Language: Japanese
• Published: 特定非営利活動法人 日本歯科放射線学会 2010; Japanese Society for Oral and Maxillofacial Radiology
• Subjects: dental X-ray unit; dose; image quality; quality control; 品質管理; 歯科用エックス線撮影装置; 画質; 線量
• ISSN: 0389-9705; 2185-6311
• DOI: 10.11242/dentalradiology.50.21

Objective: In this study, to clarify quality control issues in a dental X-ray unit, we surveyed the uniformity and safety of absorbed doses and exposure time from dental X-ray units, and evaluated image quality of intraoral radiography at Osaka Dental University Hospital.Materials and Methods: Measurements of dose and exposure time were carried out five times and the mean was calculated at twenty-two dental X-ray units in our university hospital using the standard parameters for the mandibular molar region in adults. Intraoral radiography for evaluation of image quality was taken using D-speed films under the standard parameters for the mandibular molar region in adults and E-speed films for pediatric patients. Evaluation of image quality was performed by three oral radiologists.Results: Dose and exposure time differed significantly among units. Image quality of intraoral radiography using D-speed films was not significantly better than that of E-speed films.Conclusion: This study demonstrated that it is necessary to establish a uniform dose and exposure time and to change D-speed films to E-speed films when obtaining intraoral radiography in our hospital.