Korean Journal of Digital Imaging in Medicine (대한디지털의료영상학회논문지)
- Volume 14 Issue 2
- /
- Pages.15-22
- /
- 2012
- /
- 1976-7641(pISSN)
Evaluation of effective dose in panorama, cone beam CT and the usefulness of x-ray protective
치과방사선검사에서 방사선방어용구 사용 전, 후의 유효선량에 대한 평가
-
Kim, Jae In
(Department of Radiology, Asan Medical Center)
;
-
Choi, Won Keun
(Department of Radiology, Asan Medical Center)
;
- Lee, So La (Department of Radiology, Asan Medical Center) ;
- Lee, Jung Hwa (Department of Radiology, Asan Medical Center) ;
-
Lee, Kwan Sub
(Department of Radiology, Asan Medical Center)
-
김재인
(서울아산병원 영상의학팀)
;
-
최원근
(서울아산병원 영상의학팀)
;
- 이소라 (서울아산병원 영상의학팀) ;
- 이정화 (서울아산병원 영상의학팀) ;
-
이관섭
(서울아산병원 영상의학팀)
- Received : 2012.09.14
- Accepted : 2012.10.26
- Published : 2012.10.31
Abstract
The purpose of this study was to measure the absorbed dose and calculate the effective dose for cone beam computed tomography (CBCT) and panorama units and to estimate usefulness of x-ray protective. Rando phantom and glass dosimeters were used for dosimetry. The absorbed doses were measured at 15 organs and 14 remainder from correspond to ICRP 2007 recommendations. The absorbed dose was highest in salivary glands as measured CBCT 2.420mGy, panorama 0.307mGy. Absorbed dose in another organs were high in order of thyroid, brain, skin, esophagus. The effective dose was CBCT 0.100mSv, panorama 0.011mSv and effective dose of panorama was higher than that of CBCT by 10 times. In case of wearing x-ray protective, reducing effective dose of CBCT by 0.066mSv (66%) and panorama by 0.008mSv (72%). Effective dose were reduced by radiological shielding but it needs further optimization studies, where dosimetric data are analyzed in combination with image quality with keep the patients' exposure as low as possible.