Journal of Korean Academy of Oral and Maxillofacial Radiology (치과방사선)

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
권호 표지

EQUIVALENT DOSE, EFFECTIVE DOSE AND RISK ASSESSMENT FROM PANORAMIC RADIOGRAPHY TO THE CRITICAL ORGANS OF HEAD AND NECK REGION

파노라마 촬영시의 두경부 주요기관의 등가선량, 유효선량 및 위험도

  • Cho Bong-Hae (Department of Dental Radiology, College of Dentistry, Pusan National University) ;
  • Nah Kyung-Soo (Department of Dental Radiology, College of Dentistry, Pusan National University) ;
  • Lee Ae-Ryeon (Department of Pediatric Dentistry, College of Dentistry, Pusan National University)
  • 조봉혜 (부산대학교 치과대학 치과방사선학 교실) ;
  • 나경수 (부산대학교 치과대학 치과방사선학 교실) ;
  • 이애련 (부산대학교 치과대학 소아치과학 교실)
  • Published : 1995.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study was to evaluate the equivalent and effective dose, and estimate radiation risk to the critical organs of head and neck region from the use of adult and child mode in panoramic radiography. The results were as follows. 1. The salivary glands showed the highest equivalent and effective dose in adult and child mode. the equivalent and effective dose in adult mode were 837μSv and 20.93μSv, those in child mode were 462μSv and 11.54μSv, respectively. 2. Total effective doses to the critical head and neck organs were estimated 34.21μSv in adult mode, 20.14μSv in child mode. From these datas, the probabilities of stochastic effect from adult and child mode were 2.50x10/sup -6/ and 1.47x10/sup -6/. 3. The other remainder showed the greatest risk of fatal cancer. The risk estimate were 4.5 and 2.7 fatal malignancies in adult and child mode from million panoramic examinations. The bone marrow and thyroid gland showed about 0.1 fatal cancer in adult and child mode from these examinations.

Keywords