| Project/Area Number |
12670888
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Radiation science
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| Research Institution | OITA MEDICAL UNIVERSITY |
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Principal Investigator |
WAKISAKA Masaki OITA MEDICAL UNIVERSITY, MEDICINE, ASSOCIATE PROFESSOR, 医学部, 助教授 (00210873)
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| Co-Investigator(Kenkyū-buntansha) |
YAMADA Yasunari OITA MEDICAL UNIVERSITY, MEDICINE, ASSISTANT, 医学部, 助手 (60244183)
MATSUMOTO Syunro OITA MEDICAL UNIVERSITY, MEDICINE, ASSOCIATE PROFESSOR, 医学部, 助教授 (80219500)
森 宣 大分医科大学, 医学部, 教授 (20128226)
堀 雄三 大分医科大学, 医学部, 助手 (70295187)
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| Project Period (FY) |
2000 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2002: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2001: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2000: ¥2,100,000 (Direct Cost: ¥2,100,000)
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| Keywords | Wristwatch type dosimeter / Interventional radiology / Radiation exposure |
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| Research Abstract |
Indication of wristwatch type dosimeter (WD) in the evaluation of staff doses during interventional radiology was analyzed during this research period. Fifteen cases with over-tube fluoroscopy system (OT), and 13 cases with under-tube Fluoroscopy system (UT) were included in this study. Three lithium-fluoride thermoluminescent dosimeters (TLD) placed near the sensible point of WD [TLD-D], another 3 TLDs placed at the wrist [TLD-W], and the other 3-TLD placed at the level of thyroid glands [TLD-T] were compared to estimate the exposure dose of interventional radiologists. And also zinc-cadmium sensor linked to a digital counter (Skin Dose Monitor, SDM) placed on the right upper quadrant was assessed as the patient exposure. The indicated numerical value of WD showed 0.001 - 0.013 mSv/min with UT, 0.006 - 1.072 mSv/min with OT. The readout of TLD-D showed 0.22 - 4.70 nC/min with UT, 0.28 - 43.91 nC/min with OT, respectively. The correlation between the readout of WD and TLD-D with UT was good, but there was no correlation between WD and TLD-O. Also, there was no correlation between TLD-D and TLD-O. The indicative quantity of WD seemed not to be sufficient to assess the radiation dose of interventional radiologist.
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