Development of dosimetry for brachytherapy? toward improvement of precision by regression of Monte Carlo simulation to in-vivo measurement
| Project/Area Number |
21791203
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Radiation science
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| Research Institution | Sapporo Medical University |
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Principal Investigator |
TANAKA Kenichi 札幌医科大学, 医療人育成センター, 講師 (70363075)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 放射線治療物理学 / 小線源治療 / 癌 / 線量評価 / モンテカルロ / 回帰分析 |
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| Research Abstract |
A dose measurement method for I^<125> X-ray was validated using glass rod dosimeters. A dosimetry using calculations was also validated, in which the source strength was corrected based on its regression to the measured dose. As a calculation method for this purpose, the combination of the code "EGS5" and the source structure to be input was verified by comparison to the measured values. The dosimetry method still needs improvement in accuracy, however, the validated calculation method is applicable to analyzing the dosimetric properties of the sources. Also, the validated measurement method is applicable to develop this dosimetry for other type of the sources. The research is still ongoing. Furthermore, the real-time estimation of the strength of the source being implanted was demonstrated as to its feasibility.
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Report
(4 results)
Research Products
(31 results)
