Quantitative imaging based on the transparent x-ray energy analysis of tissue
| Project/Area Number |
18K09734
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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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| Review Section |
Basic Section 57060:Surgical dentistry-related
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| Research Institution | Asahi University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
林 裕晃 金沢大学, 保健学系, 准教授 (30422794)
飯田 幸弘 朝日大学, 歯学部, 講師 (60350873)
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | Ｘ線 / エネルギー / フォトンカウンティング / 骨密度 / 実効原子番号 / 口内法Ｘ線撮影 / BMD / X線撮影 / フォトンカウンティング型X線検出器 / 歯科 / フォトンカウンティング型X 線検出器 / フォトンカウンティングX線検出器 / スキャノグラム |
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| Outline of Final Research Achievements |
We proposed a method to determine the bone mineral density and the effective atomic number in the jaws by analyzing the energy of transmitted X-rays using a new photon counting X-ray detector. We developed a photon counting type X-ray detector device with a line-shaped detection area that takes intraoral X-ray images by the scanogram technique.
By calculating and correcting the degree of beam hardening and by calculating the ratio of the values between three different X-ray energy regions (BIN), an image to show the hard tissue region with the same effective atomic number can be obtained. It revealed that the method of extracting and analyzing the bone mineral density is available.
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| Academic Significance and Societal Importance of the Research Achievements |
歯科では、X線セファログラムを用いる矯正や小児歯科、および近年盛んになったインプラント治療を除いて、画像から骨を「計測・評価」することは普及していない。本研究の提案手法により顎骨の骨密度を簡便に評価できる様になれば，歯科臨床における骨の定量的計測・評価の普及が期待できる。また，Ｘ線エネルギー解析の感度および精度をさらに向上させることで，炎症や腫瘍の検出への応用の可能性もある。
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Report
(5 results)
Research Products
(12 results)
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[Journal Article] Effective atomic number image determination with an energy-resolving photon-counting detector using polychromatic X-ray attenuation by correcting for the beam hardening effect and detector response2021
Author(s)
Natsumi Kimoto, Hiroaki Hayashi, Takumi Asakawa, Cheonghae Lee, Takashi Asahara, Tatsuya Maeda, Sota Goto, Yuki Kanazawa, Akitoshi Katsumata, Shuichiro Yamamoto, Masahiro Okada
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Journal Title
Applied Radiation and Isotopes
Volume: 170
Pages: 109617-109617
DOI
Related Report
Peer Reviewed
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[Presentation] Photon counting technique: How to analyze a novel quantitative image?,2019
Author(s)
Natsumi Kimoto, Hiroaki Hayashi, Takumi Asakawa, Takashi Asahara, Tatsuya Maeda, Akitoshi Katsumata, Yuki Kanazawa, Shuji Koyama, Shuichiro Yamamoto, Masahiro Okada
Organizer
RSNA2019 Education Exhibit Presentation, Chicago,
Related Report
Int'l Joint Research
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[Presentation] Shuichiro Yamamoto, Masahiro Okada : Feasibility study of photon counting detector for producing effective atomic number image,2019
Author(s)
Natsumi Kimoto, Hiroaki Hayashi, Takumi Asakawa, Takashi Asahara, Tatsuya Maeda, Yuki Kanazawa, Akitoshi Katsumata,
Organizer
IEEE Nuclear Science Symposium and Medical Imaging Conference, Manchester,
Related Report
Int'l Joint Research
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