Dose calibrator 측정 깊이와 용량의 변화에 따른 선량 값의 성향에 대한 고찰

• 영문명: A Study on the Tendency of Dose value According to Dose calibrator Measurement Depth and Volume
• 발행기관: 대한핵의학기술학회
• 저자명: 김진구(Jin Gu Kim) 함준철(Jun Cheol Ham) 오신현(Shin Hyun Oh) 강천구(Chun Koo Kang) 김재삼(Jae Sam Kim)
• 간행물 정보: 『핵의학기술』Vol.24 No.1, 20~26쪽, 전체 7쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2020.09.30

영문 초록

Purpose It is intended to figure out the errors derived from changes in depth and volume when measuring the Standard source and 99mTc-pertechnetate by using a Dose calibrator. Then recommend appropriate measurement depth and volume. Materials and Methods As a Dose calibrator, CRC-15βeta and CRC-15R (Capintec, New Jersey, USA) was used, and the measurement sources were 57Co, 133Ba, 137Cs and 99mTc-pertechnetate was also adopted due to its high frequency of use. The Standard source was respectively measured the changes according to its depth without changing the volume, in a range of 0 cm to 15 cm from the bottom of the ion chamber. 99mTc-pertechnetate was measured at each depth by changing the volume with 0.1 mL, 0.3 mL, 0.5 mL, 0.7 mL and 0.9 mL Respectively. And the depth range was from 0 cm to 15 cm at the bottom of the ion chamber. Results In the case of Standard source 57Co, 133Ba, 137Cs and 99mTc-pertechnetate, there were significant differences according to the measurement depth(p<0.05). 99mTc-pertechnetate has a negative correlation coefficient according to the depth, and the error of the measured value was negligible at a depth from 0 cm to 7 cm at 0.3 mL and 0.5 mL, and the range of error increased as the volume increased. Conclusion In clinical practice, it is sometimes installed differently than the Standard depth recommended by the equipment company. If it’s measured at the recommended depth and volume, it could be thought that unnecessary exposure of the operator and the patient will be reduced, and more accurate radiation exams will be possible in quantitative analysis.

목차

서 론

실험재료 및 방법

결 과

고 찰

결 론

요 약

Reference

키워드

Dose calibrator 99mTc-pertechnetate Standard source