Absorbed Dose in the Full-mouth Periapical Radiography, Panoramic Radiography, and Zonography

전악치근단방사선사진촬영, 파노라마방사선사진촬영 및 협각단층촬영시의 흡수선량

  • Choi Soon-Chul (Department of Oral and Maxillofacial Radiology & Dental Research Institute College of Dentistry, Seoul National University) ;
  • Choi Hang-Moon (Department of Oral and Maxillofacial Radiology & Dental Research Institute College of Dentistry, Seoul National University)
  • 최순철 (서울대학교 치과대학 구강악안면방사선학교실 및 치학연구소) ;
  • 최항문 (서울대학교 치과대학 구강악안면방사선학교실 및 치학연구소)
  • Published : 1999.02.01

Abstract

Purpose: The objective of this study was to evaluate the possibility of substitution of the zonography for the full-mouth periapical radiography in aspect of radiation protection. Materials and Methods: Rando phantom and LiF TLD chips were used for dosimetry. The absorbed doses at brain, skin above the TMJ. parotid gland. bone marrow in the mandibular body. and thyroid gland during the full-mouth periapical radiography. panoramic radiography. and zonography were measured. Resul ts: From the zonography. the absorbed doses to the brain. the skin over the TMJ. and the parotid gland were relatively high. but the absorbed doses to the bone marrow in the mandibular body and. especially. the thyroid gland were very low. Conclusion: The zonography can be an alternative to the full-mouth periapical radiography in aspect of radiation protection.

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