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Development of dual-phase contrast-enhanced dual-energy computed tomography

Research Project

Project/Area Number 19K17285
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionOsaka International Cancer Institute

Principal Investigator

Ohira Shingo  地方独立行政法人大阪府立病院機構大阪国際がんセンター(研究所), その他部局等, 放射線腫瘍科技師 (50792694)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
KeywordsDual energy CT / pancreatic cancer / liver cancer / radiotherapy / functional image / VMI / Dual-energy CT / 四次元 / 放射線治療 / 肝臓癌 / 膵臓癌 / 二重エネルギー / 医学物理 / dual energy CT / 造影剤
Outline of Research at the Start

高精度放射線治療により腫瘍への線量増加・正常組織への線量低減が可能だが、腫瘍の正確な体内動態の把握がなければ、予期しない有害事象が発生する可能性がある。膵臓癌・肝臓癌の最適な撮影時相は腫瘍の特性によって異なる。本研究の概要は、早期相・後期相の両時相における造影剤併用4次元撮影を可能とする技術を開発し、これまで未着手であった情報を得る。物理的・生理的両側面から腫瘍の体内動態を解明し、照射範囲を決定する。我々が構築した腫瘍制御・有害事象発生モデルを基に、膵臓癌に対して強度変調放射線治療を、肝臓癌に対して体幹部定位放射線治療施行する研究である。

Outline of Final Research Achievements

Dual-energy computed tomography (DECT) was applied for pancreatic and liver cancer radiotherapy. The virtual monochromatic images derived from DECT improved the image quality for target delineation. Moreover, the iodine density map could serve as the functional image, and the functional image based volumetric modulated radiotherapy formed a new treatment approach. The dual-phase four-dimensional DECT could evaluate the magnitude of respiratory motion at different phases. We believe that these results contribute for reducing radiation induced side effect and improving treatment outcome for patients with pancreatic and liver cancers.

Academic Significance and Societal Importance of the Research Achievements

DECTの放射線治療への応用は未だほとんど探求されていない領域である。難治性癌の代表格である膵臓癌・肝臓癌に対して、DECTは腫瘍の描出能を向上し、機能画像に基づいた新たな治療計画を可能とした。これらの成果に加え、多時相四次元CTはこれまで報告がなく、学術的意義は大きい。さらに、本研究の成果は膵臓癌・肝臓癌の放射線治療において、有害事象の低減・治療成績向上に寄与できる可能性があるため社会的意義は大きい。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2021 2020

All Journal Article (10 results) (of which Peer Reviewed: 10 results,  Open Access: 5 results)

  • [Journal Article] Customization of a model for knowledge-based planning to achieve ideal dose distributions in volume modulated arc therapy for pancreatic cancers2021

    • Author(s)
      Ueda Yoshihiro、Nitta Yuya、Isono Masaru、Ohira Shingo、Masaoka Akira、Karino Tsukasa、Inui Shoki、Miyazaki Masayoshi、Teshima Teruki
    • Journal Title

      Journal of Medical Physics

      Volume: 46 Issue: 2 Pages: 66-66

    • DOI

      10.4103/jmp.jmp_76_20

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of Stopping Power Ratio Calculation Using Dual-energy Computed Tomography With Fast Kilovoltage Switching for Treatment Planning of Particle Therapy2021

    • Author(s)
      OHIRA SHINGO、IMAI YASUHIRO、KOIKE YUHEI、ONO SHUNSUKE、UEDA YOSHIHIRO、MIYAZAKI MASAYOSHI、KOIZUMI MASAHIKO、KONISHI KOJI
    • Journal Title

      In Vivo

      Volume: 36 Issue: 1 Pages: 103-110

    • DOI

      10.21873/invivo.12681

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Improvement of image quality for pancreatic cancer using deep learning-generated virtual monochromatic images: Comparison with single-energy computed tomography2021

    • Author(s)
      Ohira Shingo、Koike Yuhei、Akino Yuichi、Kanayama Naoyuki、Wada Kentaro、Ueda Yoshihiro、Masaoka Akira、Washio Hayate、Miyazaki Masayoshi、Koizumi Masahiko、Ogawa Kazuhiko、Teshima Teruki
    • Journal Title

      Physica Medica

      Volume: 85 Pages: 8-14

    • DOI

      10.1016/j.ejmp.2021.03.035

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Improvement of image quality and assessment of respiratory motion for hepatocellular carcinoma with portal vein tumor thrombosis using contrast-enhanced four-dimensional dual-energy computed tomography2021

    • Author(s)
      Ohira Shingo、Kanayama Naoyuki、Wada Kentaro、Ikawa Toshiki、Hirata Takero、Kishi Noriko、Karino Tsukasa、Washio Hayate、Ueda Yoshihiro、Miyazaki Masayoshi、Koizumi Masahiko、Teshima Teruki
    • Journal Title

      PLOS ONE

      Volume: 16 Issue: 1 Pages: e0244079-e0244079

    • DOI

      10.1371/journal.pone.0244079

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Third-Generation Adaptive Statistical Iterative Reconstruction for Contrast-Enhanced 4-Dimensional Dual-Energy Computed Tomography for Pancreatic Cancer2021

    • Author(s)
      Ohira Shingo、Kanayama Naoyuki、Wada Kentaro、Washio Hayate、Karino Tsukasa、Ueda Yoshihiro、Inui Shoki、Miyazaki Masayoshi、Koizumi Masahiko、Teshima Teruki
    • Journal Title

      Journal of Computer Assisted Tomography

      Volume: 45 Issue: 1 Pages: 18-23

    • DOI

      10.1097/rct.0000000000000942

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Stereotactic body radiation therapy planning for liver tumors using functional images from dual-energy computed tomography2020

    • Author(s)
      Ohira Shingo、Kanayama Naoyuki、Toratani Masayasu、Ueda Yoshihiro、Koike Yuhei、Karino Tsukasa、Shunsuke Ono、Miyazaki Masayoshi、Koizumi Masahiko、Teshima Teruki
    • Journal Title

      Radiotherapy and Oncology

      Volume: 145 Pages: 56-62

    • DOI

      10.1016/j.radonc.2019.12.002

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Endoscopic ultrasound-guided fiducial marker placement for neoadjuvant chemoradiation therapy for resectable pancreatic cancer2020

    • Author(s)
      Ashida Reiko、Fukutake Nobuyasu、Takada Ryoji、Ioka Tatsuya、Ohkawa Kazuyoshi、Katayama Kazuhiro、Akita Hirofumi、Takahashi Hidenori、Ohira Shingo、Teshima Teruki
    • Journal Title

      World Journal of Gastrointestinal Oncology

      Volume: 12 Issue: 7 Pages: 768-781

    • DOI

      10.4251/wjgo.v12.i7.768

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Preoperative Stereotactic Body Radiotherapy to Portal Vein Tumour Thrombus in Hepatocellular Carcinoma: Clinical and Pathological Analysis2020

    • Author(s)
      Kishi N, Kanayama N, Hirata T, Ohira S, Wada K, Kawaguchi Y, Konishi K, Nagata S, Nakatsuka S, Marubashi S, Tomokuni A, Wada H, Kobayashi S, Tomita Y and Teshima T
    • Journal Title

      Sci Rep

      Volume: 10 Issue: 1 Pages: 4105-4105

    • DOI

      10.1038/s41598-020-60871-0

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dosimetric impact of baseline drift in volumetric modulated arc therapy with breath holding2020

    • Author(s)
      Ono Shunsuke、Ueda Yoshihiro、Inui Shoki、Isono Masaru、Ohira Shingo、Murata Seiya、Miyazaki Masayoshi、Teshima Teruki
    • Journal Title

      Reports of Practical Oncology & Radiotherapy

      Volume: 25 Issue: 5 Pages: 703-708

    • DOI

      10.1016/j.rpor.2020.06.004

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Detectability of fiducials’ positions for real‐time target tracking system equipping with a standard linac for multiple fiducial markers2020

    • Author(s)
      Ono Shunsuke、Ueda Yoshihiro、Ohira Shingo、Isono Masaru、Sumida Iori、Inui Shoki、Morimoto Masahiro、Ashida Reiko、Miyazaki Masayoshi、Ogawa Kazuhiko、Teshima Teruki
    • Journal Title

      Journal of Applied Clinical Medical Physics

      Volume: 21 Issue: 11 Pages: 153-162

    • DOI

      10.1002/acm2.13050

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access

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Published: 2019-04-18   Modified: 2023-01-30  

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