| Project/Area Number |
25670526
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Radiation science
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| Research Institution | Tohoku University |
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Principal Investigator |
Hosokai Yoshiyuki 東北大学, 医学(系)研究科(研究院), 講師 (90451525)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 人工ルビー / リアルタイム / 放射線計測 / シンチレータ / フォトンカウント / 校正曲線 / X戦計測システム / 過剰照射 / 被ばく線量測定 / フォトンカウンタ / X線線量計 / X線被ばく / 照射線量 / IVR / X線被曝 / X線被爆 |
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| Outline of Final Research Achievements |
Radiation-induced injury is a considerable problem in performing interventional radiology (IVR). One of the reasons for this injury is that the local skin dose cannot be monitored in real time. There are systems to measure the exposure dose; however, some of these cannot measure in real time, and some of the real-time measurement systems that enter the field of view interfere with the IVR.
The ruby scintillator is known to emit light in response to radiation. The emitted light, which is guided using an optical acrylic fiber, can be measured in terms of the number of photons using a photon counter unit in real time. We examined some basic characteristics of the system. The ruby used in this study did not interfere with the IVR. There was a strong correlation between the measured data and the change in the exposure dose condition. As a result,the local skin dose was obtained by dividing the number of photons. So, using the proposed system, the exposure dose can be measured in real time.
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