지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2010.6
- 수록면
- 167 - 173 (7page)
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Purpose
Recently, with increased number of patients who require interventional diagnosis or treatment with expanding field of interventional procedures, radiation exposure is of great interest to those who operate interventional procedure.
The purpose of our study was to evaluate the radiation dose in table distance and operator distance using Whole body shields for reduction of radiation exposure.
Material and Methods
Philips Allura Xper unit was used with the following protocols: 0.5 ㎜ Pb (60 x 75㎝), collimator (40 x 40㎝ field), SID (90㎝), water phantom (plasty glass, 30 x 40 x 25㎝). Dose measurement was done by using Radical corporation (Radiation monitor controller, model 2026 made in USA) and Electrometer/Ion chamber. Radiation doses were measured 3 times each in 50cm, 100cm and 150cm distance from table and operator, with the described phantom according to the usage of Whole body shields.
Measure change on fluoroscopy : R/h → mR/min → μGy/min
Measure change in record dose : mR/min → μGy/fps, 1mR = 0.0087mGy
Results
Table 1. Comparision of radiation dose with the usage of shield and distance on fluoroscopy (10 sec)(표)
Table 2. Comparison of radiation dose with the usage of shield and distance on DSA (2fps)(표)
Conclusion
In comparison of radiation dose with the usage of whole body shield, it demonstrated significant decrease in 50cm distance from table on fluoroscopy (0.03μGy/min → 0.00μGy/min) and 83% decrease in 50cm distance from operator on DSA (0.02μGy/min → 0.00μGy/min). However, avoidance of unnecessary fluoroscopy and DSA is needed to reduce radiation exposure to operators, patients and persons related to operation because there is a limitation in perfect radiation shield.
Recently, with increased number of patients who require interventional diagnosis or treatment with expanding field of interventional procedures, radiation exposure is of great interest to those who operate interventional procedure.
The purpose of our study was to evaluate the radiation dose in table distance and operator distance using Whole body shields for reduction of radiation exposure.
Material and Methods
Philips Allura Xper unit was used with the following protocols: 0.5 ㎜ Pb (60 x 75㎝), collimator (40 x 40㎝ field), SID (90㎝), water phantom (plasty glass, 30 x 40 x 25㎝). Dose measurement was done by using Radical corporation (Radiation monitor controller, model 2026 made in USA) and Electrometer/Ion chamber. Radiation doses were measured 3 times each in 50cm, 100cm and 150cm distance from table and operator, with the described phantom according to the usage of Whole body shields.
Measure change on fluoroscopy : R/h → mR/min → μGy/min
Measure change in record dose : mR/min → μGy/fps, 1mR = 0.0087mGy
Results
Table 1. Comparision of radiation dose with the usage of shield and distance on fluoroscopy (10 sec)(표)
Table 2. Comparison of radiation dose with the usage of shield and distance on DSA (2fps)(표)
Conclusion
In comparison of radiation dose with the usage of whole body shield, it demonstrated significant decrease in 50cm distance from table on fluoroscopy (0.03μGy/min → 0.00μGy/min) and 83% decrease in 50cm distance from operator on DSA (0.02μGy/min → 0.00μGy/min). However, avoidance of unnecessary fluoroscopy and DSA is needed to reduce radiation exposure to operators, patients and persons related to operation because there is a limitation in perfect radiation shield.
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UCI(KEPA) : I410-ECN-0101-2010-512-003001587