Development of multi-energy CT reconstruction algorithm for material decomposition
| Project/Area Number |
15K08691
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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 |
Medical Physics and Radiological Technology
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| Research Institution | The University of Tokushima (2017)
The University of Tokyo (2015-2016) |
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Principal Investigator |
HAGA Akihiro 徳島大学, 大学院医歯薬学研究部(医学系), 教授 (30448021)
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| Co-Investigator(Kenkyū-buntansha) |
古徳 純一 帝京大学, 医療技術学部, 教授 (70450195)
中川 恵一 東京大学, 医学部附属病院, 准教授 (80188896)
今江 禄一 東京大学, 医学部附属病院, 診療放射線技師 (80420222)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 医学物理学 / 物質同定 / 逐次近似再構成 / ビームハードニング / 事後分布最大化 / 光電効果 / Hartree-Fock / Dual energy CT / 放射線物理学 / Hatree-Fock |
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| Outline of Final Research Achievements |
The purpose of this study is to newly develop a multi-energy CT reconstruction algorithm for material decomposition based on the photon-material cross section and X-ray energy spectrum. We developed a high-precision photon cross section program and material decomposition using maximum a posteriori algorithm with a standard material distribution as a prior information. The difference between the input material data in virtual phantoms and the corresponding reconstructed material distribution was quite small; The densities of carbon, nitrogen, and oxygen which are the dominant materials for human anatomies were able to be reconstructed within an error of 20 percents.
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Report
(4 results)
Research Products
(64 results)
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[Journal Article] Evaluation of functional marrow irradiation based on skeletal marrow composition obtained using dual-energy CT2016
Author(s)
Taiki Magome, Jerry Froelich, Yutaka Takahashi, Luke Arentsen, Shernan Holtan, Keenan Brown, Akihiro Haga, Keiichi Nakagawa, Jennifer Holter, Sebastian Giebel, Jeffrey Wong, Kathryn Dusenbery, Guy Storme, Susanta Hui
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Journal Title
International Journal of Radiation Oncology, Biology, Physics
Volume: 96
Issue: 3
Pages: 679-687
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Evaluation of a Post-analysis Method for Cumulative Dose Distribution in Stereotactic Body Radiotherapy2016
Author(s)
今江 禄一, 芳賀 昭弘, 早乙女 直也, 木田 智士, 中野 正寛, 竹中 重治, 竹内 幸浩, 白木 尚, 矢野 敬一, 山下 英臣, 中川 恵一, 大友 邦
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Journal Title
Japanese Journal of Radiological Technology
Volume: 72
Issue: 3
Pages: 251-260
DOI
NAID
ISSN
0369-4305, 1881-4883
Related Report
Peer Reviewed / Open Access
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[Presentation] Dose Reconstruction for Prostate SBRT by Use of Cone-Beam CT and a Log File During FFF-VMAT Delivery2017
Author(s)
T Imae, A Haga, Y Watanabe, S Takenaka, K Nawa, W Takahashi, H Yamashita, Y Takeuchi, K Yano, K Nakagawa, O Abe
Organizer
The 59th Annual Meeting of AAPM, Denver
Related Report
Int'l Joint Research
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[Presentation] Photoelectric Cross Section Revisited2015
Author(s)
A Haga, J Kotoku , Y Horikawa , K Nakagawa
Organizer
57th Annual meeting of American Association of Physicist in Medicine
Place of Presentation
Anaheim (USA)
Year and Date
2015-07-12
Related Report
Int'l Joint Research
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