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Development and evaluation of adaptive radiotherapy for cervical cancer using IMRT and interstitial brachytherapy for international standardization

Research Project

Project/Area Number 21K07571
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionKyoto Prefectural University of Medicine

Principal Investigator

Suzuki Gen  京都府立医科大学, 医学(系)研究科(研究院), 准教授 (80279182)

Co-Investigator(Kenkyū-buntansha) 吉田 謙  関西医科大学, 医学部, 准教授 (10463291)
増井 浩二  京都府立医科大学, 医学(系)研究科(研究院), 助教 (20783830)
梶川 智博  京都府立医科大学, 医学(系)研究科(研究院), 助教 (30846522)
山崎 秀哉  京都府立医科大学, 医学(系)研究科(研究院), 教授 (50301263)
清水 大介  京都府立医科大学, 医学(系)研究科(研究院), 客員講師 (70453107)
武中 正  京都府立医科大学, 医学(系)研究科(研究院), 助教 (80626771)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords子宮頸癌 / 組織内照射 / 小線源治療 / 放射線治療 / 子宮頸がん / 画像誘導小線源治療 / IMRT
Outline of Research at the Start

子宮頸がんの画像誘導小線源治療(IGBT)のさらなる発展を目指すには、MRIの利点をこれまで以上に活かした研究が必須と考える。EBRTでは点処方主体の本邦が、体積処方を潮流とする世界に後塵を拝することも懸念する。
トモセラピーを用いたIMRTと各治療毎のMRIを用いたIGBTをこれに融合することで、子宮頸がんに対する最適な治療法を開発し、これを検証する。最終的に多施設共同研究を行い、本邦から子宮頸がんの国際標準治療の基礎データを発信する。

Outline of Final Research Achievements

There is no consensus regarding the choice of three-dimensional image-guided brachytherapy technique. In this study, we clarified the size standards for cases requiring intra-tissue needle insertion. We compared the dose-volume histogram parameters of each modality in 112 cervical cancer patients treated with brachytherapy (54 intracavitary, 11 intracavitary + interstitial, and 47 interstitial only(ISBT)). Tumor volume > 30 cm3 and high-risk clinical target volume > 40 cm3 during source therapy were considered appropriate thresholds for indication of interstitial needle insertion. Tumors with GTV > 150 cm3 may be candidates for interstitial therapy without intracavitary irradiation. In conclusion, initial tumor volume is an important predictor of intracavitary and intracavitary+intracavitary adaptation. If the initial GTV is >150 cm3, ISBT or at least the interstitial method is recommended.

Academic Significance and Societal Importance of the Research Achievements

局所進行子宮頸癌患者に対する化学放射線療法において、初期腫瘍体積が組織内線治療(ISBT)および腔内線治療併用(ICIS-BT)の適応基準として有用であることを示した。初期腫瘍体積が150 cmを超える場合、ISBTの使用が推奨されることが明らかになり、治療効果の向上が期待できる。治療の精度と効果が向上することで、子宮頸癌患者の生存率や生活の質が改善される可能性がある。また、適切な治療法の選択が患者の副作用を軽減し、医療資源の効率的な活用につながると考えられる。医療従事者はより効果的な治療計画を立案でき、患者に対して最適なケアを提供するための科学的根拠を提供することができる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (23 results)

All 2024 2023 2022 2021 Other

All Journal Article (17 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 17 results,  Open Access: 17 results) Remarks (6 results)

  • [Journal Article] Re-irradiation for isolated neck recurrence in head and neck tumor: impact of rN category2024

    • Author(s)
      Yamazaki Hideya、Suzuki Gen、Aibe Norihiro、Shiomi Hiroya、Oh Ryoong-jin、Yoshida Ken、Nakamura Satoaki、Konishi Koji、Matsuyama Tomohiko、Ogita Mikio
    • Journal Title

      Scientific Reports

      Volume: 14 Issue: 1 Pages: 3107-3107

    • DOI

      10.1038/s41598-024-53438-w

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Albumin-bilirubin score is a useful predictor of worsening liver reserve after stereotactic body radiation therapy in elderly Japanese patients with hepatocellular carcinoma2024

    • Author(s)
      Yuki Yoshino, Gen Suzuki, Hiroya Shiomi, Takuya Kimoto, Sho Seri, Hideya Yamazaki, Kei Yamada
    • Journal Title

      Journal of Radiation Research

      Volume: 65 Issue: 2 Pages: 244-250

    • DOI

      10.1093/jrr/rrae006

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Potential benefit of dose‐escalated stereotactic body radiation therapy using CyberKnife for early‐stage primary lung cancer2023

    • Author(s)
      Watanabe Shou、Yamazaki Hideya、Kimoto Takuya、Shiomi Hiroya、Yamada Kei、Suzuki Gen
    • Journal Title

      Asia-Pacific Journal of Clinical Oncology

      Volume: 19 Issue: 3 Pages: 320-326

    • DOI

      10.1111/ajco.13842

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reirradiation for local recurrence of oral, pharyngeal, and laryngeal cancers: a multi-institutional study2023

    • Author(s)
      Yamazaki Hideya、Suzuki Gen、Aibe Norihiro、Shiomi Hiroya、Oh Ryoong-jin、Yoshida Ken、Nakamura Satoaki、Konishi Koji、Ogita Mikio
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 3062-3062

    • DOI

      10.1038/s41598-023-29459-2

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Initial tumor volume as an important predictor for indication of intra-cavitary brachytherapy, intra-cavitary/interstitial brachytherapy, and multi-catheter sole interstitial brachytherapy in cervical cancer patients treated with chemoradiotherapy2023

    • Author(s)
      Takenaka Tadashi、Yamazaki Hideya、Suzuki Gen、Masui Koji、Shimizu Daisuke、Kotsuma Tadayuki、Tanaka Eiichi、Yoshida Ken、Yamada Kei
    • Journal Title

      Journal of Contemporary Brachytherapy

      Volume: 15 Issue: 3 Pages: 191-197

    • DOI

      10.5114/jcb.2023.128895

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ultra-High Prostate-Specific Antigen Level: A Potential Very-High-Risk Factor for Localized High-Risk Prostate Cancer2023

    • Author(s)
      Yamazaki Hideya、Suzuki Gen、Masui Koji、Yamada Kei、Ueda Takashi、Shiraishi Takumi、Fujihara Atsuko、Kato Takashi、Hashimoto Yasutoshi、Okabe Haruumi
    • Journal Title

      Cancers

      Volume: 15 Issue: 23 Pages: 5644-5644

    • DOI

      10.3390/cancers15235644

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Chemoradiation versus surgery for superficial esophageal squamous cell carcinoma after noncurative endoscopic submucosal dissection: comparison of long-term oncologic outcomes2022

    • Author(s)
      Suzuki G, Yamazaki H, Aibe N, Masui K, Kimoto T, Nagasawa S, Watanabe S, Seri S, Asato A, Shiozaki A, Fujiwara H, Konishi H, Dohi O, Ishikawa T, Elsaleh H, Yamada K.
    • Journal Title

      Radiation Oncology

      Volume: 17 Issue: 1 Pages: 191-191

    • DOI

      10.1186/s13014-022-02162-8

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Elective nodal irradiation versus involved field radiotherapy for limited disease small cell lung cancer: a single-institution experience2022

    • Author(s)
      Suzuki G, Yamazaki H, Aibe N, Masui K, Shimizu D, Kimoto T, Nagasawa S, Takenaka T, Masai N, Watanabe S, Seri S, Tamaki N, Takayama K, Yamada K.
    • Journal Title

      Nagoya Journal of Medical Science

      Volume: 84 Issue: 2 Pages: 327-338

    • DOI

      10.18999/nagjms.84.2.327

    • ISSN
      0027-7622
    • URL

      https://nagoya.repo.nii.ac.jp/records/2002883

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Palliative Radiation Therapy for Intramedullary Spinal Cord Metastasis.2022

    • Author(s)
      Nishimura T, Yamazaki H, Suzuki G, Watanabe S, Nagasawa S, Kawabata K, Kimoto T, Aibe N, Masui K, Yamada K.
    • Journal Title

      Cancer Diagnosis and Prognosis

      Volume: 2 Issue: 6 Pages: 702-706

    • DOI

      10.21873/cdp.10163

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reirradiation for recurrent head and neck carcinoma using high-dose-rate brachytherapy: A multi-institutional study.2022

    • Author(s)
      Yamazaki H, Masui K, Suzuki G, Yoshida K, Nakamura S, Isohashi F, Kotsuma T, Takaoka Y, Tanaka E, Akiyama H, Ishibashi N.
    • Journal Title

      Brachytherapy

      Volume: 21 Issue: 3 Pages: 341-346

    • DOI

      10.1016/j.brachy.2021.12.011

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Role of Brachytherapy Boost in Clinically Localized Intermediate and High-Risk Prostate Cancer: Lack of Benefit in Patients with Very High-Risk Factors T3b-4 and/or Gleason 9-102022

    • Author(s)
      Yamazaki H, Suzuki G, Masui K, Aibe N, Shimizu D, Kimoto T, Yamada K, Okihara K, Ueda T, Narukawa T, Shiraishi T, Fujihara A, Yoshida K, Nakamura S, Kato T, Hashimoto Y, Okabe H
    • Journal Title

      Cancers

      Volume: 14 Issue: 12 Pages: 2976-2976

    • DOI

      10.3390/cancers14122976

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A deep learning method for translating 3D-CT to SPECT ventilation imaging: First comparison with 81mKr-gas SPECT ventilation imaging2022

    • Author(s)
      Tomohiro Kajikawa, Noriyuki Kadoya, Yosuke Maehara, Hiroshi Miura, Yoshiyuki Katsuta, Shinsuke Nagasawa, Gen Suzuki, Hideya Yamazaki, Nagara Tamaki, Kei Yamada
    • Journal Title

      Medical Physics

      Volume: - Issue: 7 Pages: 4353-4364

    • DOI

      10.1002/mp.15697

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A successful approach for angiosarcoma of the scalp using helical tomotherapy and customized surface mold brachytherapy2021

    • Author(s)
      Suzuki Gen、Masui Koji、Watanabe Sho、Yamazaki Hideya、Takenaka Tadashi、Asai Jun、Maruyama Ayano、Yamada Kei
    • Journal Title

      Medicine

      Volume: 100 Issue: 49 Pages: e28210-e28210

    • DOI

      10.1097/md.0000000000028210

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Definitive Radiotherapy for Penoscrotal Extramammary Paget’s Disease: A Case Report with Long-Term Follow-Up2021

    • Author(s)
      Suzuki Gen、Machida Kazutaka、Asato Akito、Seri Sho、Ikemoto Chika、Yamazaki Hideya、Yamada Kei、Katsumori Tetsuya
    • Journal Title

      Clinical Medicine Insights: Case Reports

      Volume: 14 Pages: 1-4

    • DOI

      10.1177/11795476211009251

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reirradiation for Nasal Cavity or Paranasal Sinus Tumor-A Multi-Institutional Study.2021

    • Author(s)
      Yamazaki H, Suzuki G, Aibe N, Yasuda M, Shiomi H, Oh RJ, Yoshida K, Nakamura S, Konishi K, Ogita M.
    • Journal Title

      Cancers (Basel)

      Volume: 13 Issue: 24 Pages: 6315-6315

    • DOI

      10.3390/cancers13246315

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ultrahypofractionated Radiotherapy versus Conventional to Moderate Hypofractionated Radiotherapy for Clinically Localized Prostate Cancer.2021

    • Author(s)
      Yamazaki H, Suzuki G, Aibe N, Shimizu D, Kimoto T, Masui K, Yoshida K, Nakamura S, Hashimoto Y, Okabe H.
    • Journal Title

      Cancers (Basel)

      Volume: 14 Issue: 1 Pages: 195-195

    • DOI

      10.3390/cancers14010195

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Novel Prognostic Index of High-Risk Prostate Cancer Using Simple Summation of Very High-Risk Factors.2021

    • Author(s)
      Yamazaki H, Suzuki G, Masui K, Aibe N, Shimizu D, Kimoto T, Yamada K, Shiraishi T, Fujihara A, Okihara K, Yoshida K, Nakamura S, Okabe H.
    • Journal Title

      Cancers (Basel)

      Volume: 13 Issue: 14 Pages: 3486-3486

    • DOI

      10.3390/cancers13143486

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Remarks] Researchmap

    • URL

      https://researchmap.jp/gensuzu1

    • Related Report
      2023 Annual Research Report
  • [Remarks] Researchgate

    • URL

      https://www.researchgate.net/profile/Gen-Suzuki-3

    • Related Report
      2023 Annual Research Report
  • [Remarks] Research map

    • URL

      https://researchmap.jp/gensuzu1?lang=ja

    • Related Report
      2022 Research-status Report
  • [Remarks] Research gate

    • URL

      https://www.researchgate.net/profile/Gen-Suzuki-3/research

    • Related Report
      2022 Research-status Report
  • [Remarks] researchmap

    • URL

      https://researchmap.jp/gensuzu1?lang=ja

    • Related Report
      2021 Research-status Report
  • [Remarks] researchgate

    • URL

      https://www.researchgate.net/profile/Gen-Suzuki-3

    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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