Measuring external Radiation dose Ratio by Traits of Patients during Positron Emission Tomography(PET)

양전자단층촬영(PET)시 환자의 특성에 따른 외부 방사선량률 측정

  • 조용귀 (가천대학교 보건대학 방사선학과/인하대학교병원 핵의학과) ;
  • 김성철 (가천대학교 보건대학 방사선학과/가천대학교 방사선학과) ;
  • 안성민 (가천대학교 보건대학 방사선학과/가천대학교 방사선학과)
  • Received : 2013.09.10
  • Accepted : 2013.11.14
  • Published : 2013.12.28


The purpose of this study is to ensure safety by measuring External radiation dose ratio (ERDR) by traits of patients in many ways after administering radiopharmaceutical($^{18}F$-FDG) for PET Torso scan, and to decrease ERDR of those to RI technologist, caretakers, and those who frequently exposed to radiation by arousing attention to radiation dose. Radiopharmaceutical was administered to 80 patients who conducted PET Torso from January to June, 2013. Radiation dose emitted from the patients was measured according to body shape(BMI), water hydration, height, amount of radiation administration. From the moment immediately after the radiopharmaceutical was administered, ERDR was measured by personal traits of patients. The radiation dose increased in proportion to the administered amount of the radiopharmaceutical, and there was no significant difference depending on the body shape of the patients. When water was supplied and the height was normal, the radiation dose was lower compared with the cases where water was not supplied and height was not normal. There is a need for making efforts to minimize the working time through sufficient education and mock training before those who RI technologist with sources of radiation for complying the radiation safety management rule. And they should minimize the ERDR by wearing a protective gear.


External radiation dose rate(ERDR.);Positron Emission Tomography(PET)


Supported by : 가천대학교


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