체외충격파쇄석술 시 환자와 시술자에게 가해지는 방사선량
Scattered Radiation Doses to the Patients and Medical Practitioneer from Extracorporeal Shock Wave Lithotripsy
두승환, 양원재, 송윤섭, 박영호, 이경화,
소속 상세정보
두승환 ( Doo Seung-Whan )
순천향대학교 의과대학 비뇨기과학교실
양원재 ( Yang Won-Jae )
순천향대학교 의과대학 비뇨기과학교실
송윤섭 ( Song Yun-Seob )
순천향대학교 의과대학 비뇨기과학교실
박영호 ( Park Young-Ho )
순천향대학교 의과대학 비뇨기과학교실
이경화 ( Lee Kyung-Hwa )
순천향대학교 의과대학 비뇨기과학교실
KMID : 0358320080490020155
Abstract
Purpose: We estimated scattered radiation doses to the patients and medical practitioneer and revealed risk factors associated with increasing radiation doses during extracorporeal shock wave lithotripsy(ESWL).
Materials and Methods: At first, we measured radiation doses 2 times using thermoluminescence dosimeter to simulative patients and medical practitioneer without any shield during 10 minutes of ESWL and determined mean radiation dose/minute. From June to August 2007 at our institution, we prospectively measured radiation exposured time during respective ESWL for treatment of urinary stones. Thereafter, we calculated practical radiation doses to patients and medical practitioneer from respective mean radiation dose/minute. We also analyzed which factors were associated with increasing radiation doses.
Results: A total of 50 ESWL were analyzed from 38 patients. Mean radiation dose/minute to simulative patients and medical practitioneer was 16.20, 0.006mSv respectively. At 1 time ESWL, median radiation exposured time was 360 seconds(130-980), therefore, median radiation dose to patients and medical practitioneer was calculated as 97.20mSv(35.10-264.60), and 0.04mSv(0.01-0.08) respectively. Larger stone size had a correlation with increasing radiation dose and additional pain control group had higher radiation dose than otherwise.
Conclusions: During ESWL, patients were relatively exposed to high radiation which were roughly corresponded to that of 3 times of computed tomography. But the radiation dose to medical practitioneer was insignificant consider international guideline. Medical practitioneer should be aware of radiation hazard and try to minimize radiation dose to the patients at the time of ESWL. (Korean J Urol 2008;49:155-159)
키워드
Lithotripsy;Radiation
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