A STUDY ON THE EFFECTS OF SCATTERING DOSE ON EYES AND THYROID FOR PANORAMAGRAPHY (Focus on TLD and PLD)

  • Jung, Yeun (Department of Radiological Technology, Gwangju Health College University) ;
  • Dong, Kyung-Rae (Department of Radiological Technology, Gwangju Health College University) ;
  • Kweon, Dae-Cheol (Department of Radiological Science, Shinheung College University) ;
  • Dieter, Kevin (Department of Physical Therapy, Gwangju Health College University) ;
  • Goo, Eun-Hoe (Department of Radiology, Seoul Medical Center) ;
  • Ahn, Se-Youn (Department of Dental Hygiene, Dongnam Health University) ;
  • Chung, Jae-Eun (Department of Digital Management and Information, Nambu University)
  • Received : 2010.01.05
  • Accepted : 2010.02.20
  • Published : 2010.03.30

Abstract

This study concerning the surface dose of eye and thyroid from panoramagraphy used thermoluminescent dosimeter (TLD) and photoluminescent dosimeter (PLD) to take measurements at ten hospitals in the Gwangju metropolitan area. The recommendations from ICRP 60 and ICRP 73 on the allowance standard for eye are 15 mSv and for thyroid is 1 mSv. The left eye TLD and PLD values are 0.19 mSv and 0.24 mSv respectively. The right eye TLD and PLD values are 0.23 mSv and 0.25 mSv respectively. Thyroid TLD and PLD values are 0.08 mSv and 0.25 mSv respectively and did not exceed the allowance standards(p<0.001). Also comparisons are made between TLD and PLD for each organ and PLD has higher dose measurements than TLD. There are statistically significant differences in left eye measurements and thyroid measurements (p<0.01). There is no significant difference in measurements for the right eye (p>0.05). The TLD and PLD measured dose from panoramagraphy instruments on eyes and thyroid from each hospital did not exceed the recommended dose from ICRP 60 for surface dose measurements. However, due to the probability of influence, consideration should be made for all levels of dose.

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