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Development of a tomosynthesis system for the quantitative assessment of suspected pulmonary neoplastic lesions

Research Project

Project/Area Number 20K20224
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 90130:Medical systems-related
Research InstitutionKobe Tokiwa University (2021-2024)
Kyushu University (2020)

Principal Investigator

Kuramoto Taku  神戸常盤大学, 保健科学部, 准教授 (90645582)

Project Period (FY) 2020-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsトモシンセシス / 画像診断 / 肺がん / がん検診 / 画質評価
Outline of Research at the Start

肺がんは我が国の死亡原因の第1位であり,その診断にはCT検査が重要な役割を担っているが,CT検査は放射線被ばく線量が高く,検査費用も高い問題がある.一方,トモシンセシスは,CT検査と比較して低い放射線被ばく線量で,高い空間分解能を有した画像を取得することができる.しかし,肺がんに対するトモシンセシスの活用は,まだ確立されていない.その原因として,トモシンセシス画像の特性の完全な把握がなされていないことが挙げられる.本研究は,トモシンセシス画像の特性の把握を行い,肺がん病変の定量解析が可能なトモシンセシスシステムの開発を目指す.

Outline of Final Research Achievements

This study aimed to elucidate the imaging characteristics of tomosynthesis and to develop a system capable of quantitative analysis of pulmonary oncologic lesions. The properties of tomosynthesis images were quantitatively validated using a domestically implemented tomosynthesis device. Assessment of geometric distortion within the effective field of view demonstrated distinct variations in distortion patterns between the central and peripheral regions of the images. Additionally, the center of rotation setting during image acquisition was found to significantly influence the degree of geometric distortion. Moreover, the study confirmed that image quality can be quantitatively assessed by incorporating image quality figure into the evaluation process.

Academic Significance and Societal Importance of the Research Achievements

我が国の医療施設におけるCT検査の検査件数は増加の一途をたどっている.一方,単純X線装置やX線TV装置を用いるトモシンセシスは,検査時間が短いため,限られた検査室,検査時間においても患者スループットを大幅に向上できる.また,低被ばく・低費用で検査が行うことが可能で,かつ高画質な連続する断層画像を取得できる.つまり,肺がん検診に対して必要最低限の被ばくとコストで正確な診断が行え,早期発見・治療を求める社会的ニーズに答えることができる可能性がある.本研究で実施したトモシンセシスの画像の特性をより詳細に把握することは,臨床的有用性のエビデンスの構築に寄与する取り組みである.

Report

(6 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (22 results)

All 2024 2023 2022 2021 2020

All Journal Article (11 results) (of which Peer Reviewed: 8 results,  Open Access: 1 results) Presentation (11 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Correlation Between Contrast-Detail Analysis and Clinical Image Quality Assessment of Intrapulmonary Lesions in Dual-Energy Subtraction Chest Radiography Using the Two-Shot Method: A Phantom Study2023

    • Author(s)
      Kuramoto Taku, Takarabe Shinya, Kanzaki Yui, Shibayama Yusuke, Yamasaki Yuzo, Kitamura Yoshiyuki
    • Journal Title

      Academic Radiology

      Volume: 31 (5) Issue: 5 Pages: 2118-2127

    • DOI

      10.1016/j.acra.2023.10.016

    • Related Report
      2023 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of high- and low-energy entrance surface dose allocation ratio for two-shot dual-energy subtraction imaging on low-contrast resolution2023

    • Author(s)
      Kanzaki Y.、Kuramoto T.、Takarabe S.、Shibayama Y.、Yoshikawa H.、Kato T.
    • Journal Title

      Radiography

      Volume: 29 Issue: 1 Pages: 240-246

    • DOI

      10.1016/j.radi.2022.11.007

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Evaluation of resolution characteristics of digital intraoral radiographic images using a task transfer function2022

    • Author(s)
      Kuramoto Taku、Takarabe Shinya、Tsuru Hiroki、Shibayama Yusuke、Kato Toyoyuki、Yoshiura Kazunori
    • Journal Title

      Oral Radiology

      Volume: 38 Issue: 4 Pages: 638-644

    • DOI

      10.1007/s11282-022-00633-y

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Relationship between image information content and observer performance in digital intraoral radiography.2022

    • Author(s)
      S Takarabe, K. Okamura, T. Kuramoto, K. Tokumori, T. Kato & K. Yoshiura.
    • Journal Title

      Oral Radiol.

      Volume: online Issue: 3 Pages: 1-13

    • DOI

      10.1007/s11282-022-00662-7

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Is the image quality of conventional chest radiography obtained from a two-layer flat panel detector affected by the internal structure of the detector?2022

    • Author(s)
      Takarabe Shinya、Kuramoto Taku、Shibayama Yusuke、Yamasaki Yuzo、Kitamura Yoshiyuki、Yoshikawa Hideki、Kato Toyoyuki
    • Journal Title

      Physica Medica

      Volume: 95 Pages: 176-181

    • DOI

      10.1016/j.ejmp.2022.02.004

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] IEC62220-1-3 に基づく動画用 X 線検出器の画質評価2021

    • Author(s)
      倉本 卓
    • Journal Title

      画像通信(日本放射線技術学会 画像部会)

      Volume: 86 Pages: 15-21

    • Related Report
      2021 Research-status Report
  • [Journal Article] Effect of beam quality and readout direction in the edge profile on the modulation transfer function of photostimulable phosphor systems via the edge method.2021

    • Author(s)
      Takarabe S, Kuramoto T, Shibayama Y, Tsuru H, Tatsumi M, Kato T, Okamura K, Yoshiura K.
    • Journal Title

      J Med Imaging (Bellingham)

      Volume: Jul;8(4) Issue: 04 Pages: 043501-043501

    • DOI

      10.1117/1.jmi.8.4.043501

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] X-ray dose reduction using additional copper filtration for dental cone beam CT2021

    • Author(s)
      Kuramoto Taku、Takarabe Shinya、Shiotsuki Kenshi、Shibayama Yusuke、Hamasaki Hiroshi、Akamine Hiroshi、Okamura Kazutoshi、Chikui Toru、Kato Toyoyuki、Yoshiura Kazunori
    • Journal Title

      Physica Medica

      Volume: 81 Pages: 302-307

    • DOI

      10.1016/j.ejmp.2020.11.022

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] RADspeed Pro style edition と胸部動態撮影の使用経験について2021

    • Author(s)
      倉本 卓,吉川英樹,服部昭子,山崎誘三,樋田知之,神谷武志,加藤豊幸,石神康生
    • Journal Title

      Medical Now

      Volume: 88 Pages: 17-22

    • Related Report
      2020 Research-status Report
  • [Journal Article] IEC62220-1-3 に基づく動画用 X 線検出器の画質評価2021

    • Author(s)
      倉本 卓
    • Journal Title

      画像通信

      Volume: 86 Pages: 15-21

    • Related Report
      2020 Research-status Report
  • [Journal Article] Effect of differences in pixel size on image characteristics of digital intraoral radiographic systems: a physical and visual evaluation2020

    • Author(s)
      Kuramoto Taku、Takarabe Shinya、Okamura Kazutoshi、Shiotsuki Kenshi、Shibayama Yusuke、Tsuru Hiroki、Akamine Hiroshi、Tatsumi Masato、Kato Toyoyuki、Morishita Junji、Yoshiura Kazunori
    • Journal Title

      Dentomaxillofacial Radiology

      Volume: 49 Issue: 6 Pages: 20190378-20190378

    • DOI

      10.1259/dmfr.20190378

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] Evaluation of the characteristics of chest tomosynthesis images using a contrast-detail phantom2024

    • Author(s)
      Taku. Kuramoto, Shinya Takarabe, Yui Kanzaki, Kenshi Shiotsuki
    • Organizer
      Korean Society of Radiological Science 2024
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A fundamental study of image quality assessment of chest tomosynthesis images using inversed image quality figure2024

    • Author(s)
      Taku Kuramoto, Shinya Takarabe, Sota Goto, Yui Kanzaki, Kenshi Shiotsuki
    • Organizer
      24th Asia-Oceania Congress of Medical Physics (AOCMP) and 22nd Southeast Asia Congress of Medical Physics (SEACOMP)
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Contrast-detailファントムを用いた胸部 トモシンセシス画像の画像特性評価2024

    • Author(s)
      倉本卓,田渕麻央,寳部真也,神崎祐依,汐月剣志
    • Organizer
      第80回日本放射線技術学会総会学術大会
    • Related Report
      2023 Research-status Report
  • [Presentation] Inversed Image Quality Figureを用いたトモシンセシス画像の画質評価の基礎的検討2023

    • Author(s)
      田渕麻央, 石井誠一郎, 藤田佑奈, 寳部真也, 倉本 卓
    • Organizer
      日本放射線技術学会 第68回近畿支部学術大会
    • Related Report
      2023 Research-status Report
  • [Presentation] トモシンセシスにおける回転中心の設定が有効視野内の被写体像の幾何学的歪みに及ぼす影響2023

    • Author(s)
      倉本卓,寳部真也,汐月剣志,柴山祐亮,神崎佑依
    • Organizer
      第79回日本放射線技術学会総会学術大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Quantification of bone mineral density using dual energy computed tomography2020

    • Author(s)
      Kenshi Shiotsuki, Taku Kuramoto, Shogo Tokurei, Yoshiyuki Iwao, Tomoaki Shiroo, Daichi Noto
    • Organizer
      European Congress of Radiology
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 口内法X線撮影用CRシステムにおけるピクセルサイズの違いが画質特性に与える影響2020

    • Author(s)
      倉本 卓, 寳部真也, 津留弘樹, 柴山祐亮, 加藤豊幸, 岡村和俊, 吉浦一紀
    • Organizer
      第76回日本放射線技術学会総会学術大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 口内法X線撮影用CRシステムにおける線質の違いがMTF測定に与える影響2020

    • Author(s)
      寳部真也, 倉本 卓, 津留弘樹, 柴山祐亮, 加藤豊幸, 岡村和俊, 吉浦一紀
    • Organizer
      第76回日本放射線技術学会総会学術大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 歯科用ディジタルX線画像診断システムにおける出力画像の物理的特性評価2020

    • Author(s)
      津留弘樹,柴山祐亮,倉本 卓,寳部真也,辰見正人,加藤豊幸,吉浦一紀
    • Organizer
      第76回日本放射線技術学会総会学術大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Development of Automated Task Transfer Function Measurement Based on Circular Edge Method for Digital Intraoral Radiographic System2020

    • Author(s)
      Yusuke Shibayama, Hiroki Tsuru, Taku Kuramoto, Shinya Takarabe, Masato Tatsumi, Toyoyuki Kato, Kazunori Yoshiura
    • Organizer
      第119回日本医学物理学会学術大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 円周エッジ法を用いた歯科口内法撮影用CRシステムの解像特性の評価2020

    • Author(s)
      寳部真也, 倉本 卓, 柴山祐亮, 津留弘樹, 加藤豊幸, 岡村和俊, 吉浦一紀
    • Organizer
      第6回福岡県診療放射線技師会学術大会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2026-01-16  

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