| Project/Area Number |
25461908
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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 | Niigata University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
Hayakawa Takahide 新潟大学, 医歯学系, 助教 (00377194)
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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 |
¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2015: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2014: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | electron density / dual-energy CT / treatment planning |
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| Outline of Final Research Achievements |
To achieve accurate tissue inhomogeneity corrections in radiotherapy treatment planning, we have previously proposed a novel conversion of the energy-subtracted CT number to an electron density (ΔHU-ρe conversion). In the present study, we investigate an initial implementation of the ΔHU-ρe conversion method for a treatment planning system. Two radiotherapy plans were used to compare the reliabilities of dose calculations based on the novel ΔHU-ρe conversion and the conventional method. The ΔHU-ρe conversion generally offered superior reliability. Based on our results, ΔHU-ρe conversion appears to be a promising method of providing a reliable inhomogeneity correction in treatment planning for ill-conditioned scans.
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