2013 Fiscal Year Final Research Report
Reduction in physician's hand dose during CT fluoroscopy-guided interventions
| Project/Area Number |
23591820
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Radiation science
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| Research Institution | Okayama University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
MIMURA Hidefumi 川崎医科大学, 医学部, 教授 (10304362)
HANAMOTO Katsumi 岡山大学, 大学院保健学研究科, 助教 (20335590)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 放射線防護 / 職業被曝 / CT透視 / ＩＶＲ / 皮膚線量 |
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| Research Abstract |
High exposures to personnel may occur during CT fluoroscopy-guided interventions. The purpose of this work was to reduce personnel hand's exposure during computed tomography-guided interventional radiology procedures. Radiation exposure to the hands of physicians was measured using a thermoluminescence ring worn on the proximal phalanx of the second finger. As a result, the median value of hand exposure of physician per procedure was 0.49 mSv (0.11-2.2 mSv). The average hand exposure rate for all procedures was 0.1 mSv min-1.We therefore produce tungsten protector experimentally. Tungsten sheet equipped surgical forceps reduced the scattered exposure by approximately 75% at distances of 10 cm from the scanning plane. This protection system for CT fluoroscopy-guided interventions was effective in reducing scattered radiation around the scanning plane. However, this system was not available in sterilized procedure.
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