Effective dose from direct and indirect digital panoramic units
이근선, 김진수, 서요섭, 김재덕,
소속 상세정보
이근선 ( Lee Gun-Sun ) - Chosun University School of Dentistry Department of Oral and Maxillofacial Radiology
김진수 ( Kim Jin-Soo ) - Chosun University School of Dentistry Department of Oral and Maxillofacial Radiology
서요섭 ( Seo Yo-Seob ) - Chosun University School of Dentistry Department of Oral and Maxillofacial Radiology
김재덕 ( Kim Jae-Duk ) - Chosun University School of Dentistry Department of Oral and Maxillofacial Radiology
KMID : 1024020130430020077
Abstract
Purpose: This study aimed to provide comparative measurements of the effective dose from direct and indirect digital panoramic units according to phantoms and exposure parameters. Materials and Methods: Dose measurements were carried out using a head phantom representing an average man (175 cm tall, 73.5 kg male) and a limbless whole body phantom representing an average woman (155 cm tall, 50 kg female). Lithium fluoride thermoluminescent dosimeter (TLD) chips were used for the dosimeter. Two direct and 2 indirect digital panoramic units were evaluated in this study. Effective doses were derived using 2007 International Commission on Radiological Protection (ICRP) recommendations. Results: The effective doses of the 4 digital panoramic units ranged between 8.9 μSv and 37.8 μSv. By using the head phantom, the effective doses from the direct digital panoramic units (37.8 μSv, 27.6 μSv) were higher than those from the indirect units (8.9 μSv, 15.9 μSv). The same panoramic unit showed the difference in effective doses according to the gender of the phantom, numbers and locations of TLDs, and kVp. Conclusion: To reasonably assess the radiation risk from various dental radiographic units, the effective doses should be obtained with the same numbers and locations of TLDs, and with standard hospital exposure. After that, it is necessary to survey the effective doses from various dental radiographic units according to the gender with the corresponding phantom.
키워드
Radiography; Dental; Digital; Radiography; Panoramic; Radiation Dosage
원문 및 링크아웃 정보
등재저널 정보