• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of new electrodes for radiofrequency ablation.

Research Project

Project/Area Number 19K08108
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 InstitutionHyogo Medical University

Principal Investigator

Yamakado Koichiro  兵庫医科大学, 医学部, 教授 (20263022)

Co-Investigator(Kenkyū-buntansha) 児玉 大志  兵庫医科大学, 医学部, 助教 (20422834)
高木 治行  兵庫医科大学, 医学部, 准教授 (30378377)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsラジオ波凝固治療 / RFA / 肝臓 / IVR / 凝固壊死 / マウス皮下腫瘍モデル / 免疫チェックポイント阻害薬 / ルシフェラーゼ / ラット
Outline of Research at the Start

ラジオ波凝固療法(RFA)は、腫瘍に電極針を直接刺入し熱で壊死させる治療法である。現在、本邦では肝癌に対する治療機器として保険認可されているが、今後、肺、腎、副腎、甲状腺といった多臓器への適応拡大が期待されている。しかし現在、本邦で使用可能な電極針は15-17Gであり、小型臓器や小児がんに対しては太すぎるという欠点があった。そこで我々は、従来の電極針よりも細径(21G)の電極針を新たに開発した。本研究では、動物実験で細径電極針を用いたRFAの実行可能性や腫瘍治療効果を証明する。

Outline of Final Research Achievements

In this research, we evaluated the coagulative performance of a novel 21-gauge (G) internally cooled radiofrequency (RF) electrode using ex vivo and in vivo rat liver.Anti-tumor effect was also evaluated by mouse subcutaneous tumor model.
Results from ex vivo experiments showed the ablation volume increased significantly when RF energy was applied with the chilled water circulation. The largest ablation zone was created with applied RF power of 5 W. From in vivo experiments, results show that the ablation volume reached its maximum value when RF power of 7 W was applied. Histopathological examination showed a delineated coagulation necrosis at 24 h after RF ablation. The ablation zone border became clearer and fibrotic change was also observed at 7 days after RF ablation. Anti-tumor effect was excellent, if tumor size was less than 1cm.

Academic Significance and Societal Importance of the Research Achievements

ラジオ波凝固治療は近い将来、本邦でも肝以外の臓器へと治療適応が拡大される見込みである。そこで本研究では、今後のRFA治療適応拡大と小型臓器や小児がん等への応用を見据えて、新しく開発した細径RF電極針の凝固性能および抗腫瘍効果を行った。本研究の結果、細径RF電極針の至適使用条件や抗腫瘍効果が明らかとなり、今後の臨床応用へと展開させていく上で有用な情報が得られた。

Report

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

    (35 results)

All 2022 2021 2020 2019

All Journal Article (17 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 17 results,  Open Access: 12 results) Presentation (16 results) (of which Int'l Joint Research: 5 results,  Invited: 5 results) Book (2 results)

  • [Journal Article] Accurate Monitoring of the Response of Bone Metastases to Treatment in Patients with Prostate Cancer Using Choline PET/CT2021

    • Author(s)
      Kitajima Kazuhiro、Yamamoto Shingo、Fujiwara Masayuki、Kawanaka Yusuke、Yamada Yusuke、Nagasawa Seiji、Shimatani Kimihiro、Hanasaki Takeshi、Taguchi Motohiro、Kanematsu Akihiro、Yamakado Koichiro
    • Journal Title

      Case Reports in Oncology

      Volume: 14 Issue: 1 Pages: 520-524

    • DOI

      10.1159/000514191

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Assessment of the viability and treatment response of bone metastases in patients with metastatic castration-resistant prostate cancer using choline PET/CT2021

    • Author(s)
      Kitajima Kazuhiro、Yamamoto Shingo、Kawanaka Yusuke、Komoto Hisashi、Shimatani Kimihiro、Hanasaki Takeshi、Taguchi Motohiro、Nagasawa Seiji、Yamada Yusuke、Kanematsu Akihiro、Yamakado Koichiro
    • Journal Title

      Medicine

      Volume: 100 Issue: 23 Pages: e26206-e26206

    • DOI

      10.1097/md.0000000000026206

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Deep learning with deep convolutional neural network using FDG-PET/CT for malignant pleural mesothelioma diagnosis2021

    • Author(s)
      Kitajima Kazuhiro、Matsuo Hidetoshi、Kono Atsushi、Kuribayashi Kozo、Kijima Takashi、Hashimoto Masaki、Hasegawa Seiki、Murakami Takamichi、Yamakado Koichiro
    • Journal Title

      Oncotarget

      Volume: 12 Issue: 12 Pages: 1187-1196

    • DOI

      10.18632/oncotarget.27979

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development and Accuracy Evaluation of Augmented Reality-based Patient Positioning System in Radiotherapy: A Phantom Study2021

    • Author(s)
      TARUTANI KAZUO、TAKAKI HARUYUKI、IGETA MASATAKA、FUJIWARA MASAYUKI、OKAMURA AYAKO、HORIO FUTO、TOUDOU YUKI、NAKAJIMA SATOSHI、KAGAWA KAZUFUMI、TANOOKA MASAO、YAMAKADO KOICHIRO
    • Journal Title

      In Vivo

      Volume: 35 Issue: 4 Pages: 2081-2087

    • DOI

      10.21873/invivo.12477

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Usefulness of Quantitative Bone SPECT/CT for Evaluating Treatment Response in a Patient with Mandibular Osteomyelitis2021

    • Author(s)
      Kitajima Kazuhiro、Noguchi Kazuma、Moridera Kuniyasu、Kishimoto Hiromitsu、Tsuchitani Tatsuya、Takahashi Yoshiyuki、Furudoi Shungo、Yamakado Koichiro
    • Journal Title

      Case Reports in Oncology

      Volume: 14 Issue: 2 Pages: 820-825

    • DOI

      10.1159/000516761

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Radiofrequency ablation of benign thyroid nodules: Recommendations from the Asian conference on tumor ablation task force ? Secondary publication2021

    • Author(s)
      Baek JungHwan、Ha EunJu、Che Ying、Chou Yi-Hong、Fukunari Nobuhiro、Kim Ji-Hoon、Lin Wei-Che、My LeThi、Na DongGyu、Hwee Quek LawrenceHan、Wu Ming-Hsun、Yamakado Koichiro、Zhou Jianhua
    • Journal Title

      Journal of Medical Ultrasound

      Volume: 29 Issue: 2 Pages: 77-77

    • DOI

      10.4103/jmu.jmu_178_20

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Long-term survival following radiofrequency ablation of lung metastases in an elderly patient with calcaneal osteosarcoma2021

    • Author(s)
      Futani Hiroyuki、Takaki Haruyuki、Sawai Tatsuo、Taniguchi Junichi、Kako Yasukazu、Ide Yoshi-Hiro、Yamakado Koichiro、Tachibana Toshiya
    • Journal Title

      Medicine

      Volume: 100 Issue: 34 Pages: e26681-e26681

    • DOI

      10.1097/md.0000000000026681

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Treatment algorithm for thrombocytopenia in patients with chronic liver disease undergoing planned invasive procedures2021

    • Author(s)
      Yoshiji Hitoshi、Ueno Yoshiyuki、Kurosaki Masayuki、Torimura Takuji、Hatano Etsuro、Yatsuhashi Hiroshi、Yamakado Koichiro
    • Journal Title

      Hepatology Research

      Volume: 51 Issue: 12 Pages: 1181-1195

    • DOI

      10.1111/hepr.13715

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] MRI Finding of Prostatic Ductal Adenocarcinoma2021

    • Author(s)
      Kitajima Kazuhiro、Yamamoto Shingo、Yamasaki Takashi、Kihara Takako、Kawanaka Yusuke、Komoto Hisashi、Kimura Neinei、Hirota Seiichi、Yamakado Koichiro
    • Journal Title

      Case Reports in Oncology

      Volume: 14 Issue: 3 Pages: 1387-1391

    • DOI

      10.1159/000518531

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Radiation Pneumonitis After Volumetric Modulated Arc Therapy for Non-small Cell Lung Cancer2021

    • Author(s)
      FUJIWARA MASAYUKI、DOI HIROSHI、IGETA MASATAKA、SUZUKI HITOMI、KITAJIMA KAZUHIRO、TANOOKA MASAO、ISHIDA TOSHIHISA、WAKAYAMA TSUKASA、YOKOI TAKASHI、KURIBAYASHI KOZO、KIJIMA TAKASHI、HASHIMOTO MASAKI、KONDO NOBUYUKI、MATSUMOTO SEIJI、HASEGAWA SEIKI、KAMIKONYA NORIHIKO、YAMAKADO KOICHIRO
    • Journal Title

      Anticancer Research

      Volume: 41 Issue: 11 Pages: 5793-5802

    • DOI

      10.21873/anticanres.15396

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Adrenal pheochromocytoma treated by combination of adrenal arterial embolization and radiofrequency ablation2021

    • Author(s)
      Kako Yasukazu、Ueki Ryusuke、Yamamoto Shingo、Takaki Haruyuki、Aoki Yoshitaka、Yokoyama Osamu、Yamakado Koichiro
    • Journal Title

      Clinical Case Reports

      Volume: 9 Issue: 3 Pages: 1261-1265

    • DOI

      10.1002/ccr3.3745

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Radiofrequency ablation of benign thyroid nodules: recommendations from the Asian Conference on Tumor Ablation Task Force2021

    • Author(s)
      Ha Eun Ju、Baek Jung Hwan、Che Ying、Chou Yi-Hong、Fukunari Nobuhiro、Kim Ji-hoon、Lin Wei-Che、My Le Thi、Na Dong Gyu、Quek Lawrence Han Hwee、Wu Ming-Hsun、Yamakado Koichiro、Zhou Jianhua
    • Journal Title

      Ultrasonography

      Volume: 40 Issue: 1 Pages: 75-82

    • DOI

      10.14366/usg.20112

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Radiofrequency Ablation by a 21-Gauge Internally Cooled Electrode: Ex Vivo and In Vivo Evaluation by Rat Liver2020

    • Author(s)
      Takaki Haruyuki、Kodama Yuki、Miyamoto Hisao、Iijima Yuto、Kikuchi Yoshinari、Kodama Hiroshi、Ueshima Eisuke、Nakasho Keiji、Wada Reona、Yamakado Koichiro
    • Journal Title

      CardioVascular and Interventional Radiology

      Volume: 44 Issue: 1 Pages: 150-155

    • DOI

      10.1007/s00270-020-02660-w

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Three-year Survival Rate after Radiofrequency Ablation for Surgically Resectable Colorectal Lung Metastases: A Prospective Multicenter Study2020

    • Author(s)
      Hasegawa Takaaki、Takaki Haruyuki、Kodama Hiroshi、Yamanaka Takashi、Nakatsuka Atsuhiro、Sato Yozo、Takao Motoshi、Katayama Yoshihiko、Fukai Ichiro、Kato Toshio、Tokui Toshiya、Tempaku Hironori、Adachi Katsutoshi、Matsushima Yasushi、Inaba Yoshitaka、Yamakado Koichiro
    • Journal Title

      Radiology

      Volume: 294 Issue: 3 Pages: 686-695

    • DOI

      10.1148/radiol.2020191272

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Hepatic Artery Embolization Induces the Local Overexpression of Transforming Growth Factor β1 in a Rat Hepatoma Model2019

    • Author(s)
      Ueshima Eisuke、Nishiofuku Hideyuki、Takaki Haruyuki、Hirata Yutaka、Kodama Hiroshi、Tanaka Toshihiro、Kichikawa Kimihiko、Yamakado Koichiro、Okada Takuya、Sofue Keitaro、Yamaguchi Masato、Sugimoto Koji、Murakami Takamichi
    • Journal Title

      Liver Cancer

      Volume: 9 Issue: 1 Pages: 63-72

    • DOI

      10.1159/000502774

    • NAID

      120006796524

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Advances in percutaneous lung tumor therapy: 2019 update2019

    • Author(s)
      Kodama Hiroshi、Yamakado Koichiro、Taniguchi Junichi、Ogasawara Atsushi、Kako Yasukazu、Takaki Haruyuki、Kobayashi Kaoru
    • Journal Title

      Chinese Clinical Oncology

      Volume: 8 Issue: 6 Pages: 64-64

    • DOI

      10.21037/cco.2019.12.09

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Measurement of Head and Neck Exposure in CT Guided IVR2019

    • Author(s)
      Iizuka Takafumi、Matsumoto Kazuma、Hagihara Yoshiaki、Nasada Toshiya、Ikeuchi Youko、Kikuchi Keisuke、Mitsuie Chiemi、Kotoura Noriko、Yamakado Kouichirou、Kobayashi Kaoru、Takaki Haruyuki、Kako Yasukazu
    • Journal Title

      Japanese Journal of Radiological Technology

      Volume: 75 Issue: 7 Pages: 625-630

    • DOI

      10.6009/jjrt.2019_jsrt_75.7.625

    • NAID

      130007681557

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] タングルドカテーテルの1例2022

    • Author(s)
      高萩基仁、山門亨一郎ほか
    • Organizer
      第70回関西IVR研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 塞栓術後再開通をきたした肺動静脈瘻に対して逆行性塞栓を行った1例2022

    • Author(s)
      児玉大志、山門亨一郎ほか
    • Organizer
      第70回関西IVR研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 術後腹腔内尿漏に対してNBCAで瘻孔閉鎖術を施行した1例2022

    • Author(s)
      谷口純一、山門亨一郎ほか
    • Organizer
      第70回関西IVR研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 自動栄養血管抽出ソフトウエアを使用した腎血管筋脂肪腫の塞栓術の初期経験2022

    • Author(s)
      小笠原篤、山門亨一郎ほか
    • Organizer
      第70回関西IVR研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 腹膜に播種した内部構造を伴うparasitic leiomyomaの1例2022

    • Author(s)
      河本悠、山門亨一郎ほか
    • Organizer
      日本医学放射線学会関西地方会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 膀胱nest variant (nested urothelial carcinoma)の1例2022

    • Author(s)
      横山裕至、山門亨一郎ほか
    • Organizer
      日本医学放射線学会関西地方会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 子宮円索動脈の塞栓を要した外傷性子宮筋腫破裂の1例2021

    • Author(s)
      森山大輝、山門亨一郎ほか
    • Organizer
      第69回関西IVR研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 光イメージングで視認可能な担癌ラットモデルの開発(第2報)2021

    • Author(s)
      高木治行、山門亨一郎ほか
    • Organizer
      第69回関西IVR研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 膀胱inflammatory myofibrlastic tumorの1例2021

    • Author(s)
      河本悠、山門亨一郎ほか
    • Organizer
      日本医学放射線学会関西地方会
    • Related Report
      2021 Annual Research Report
  • [Presentation] RFA for liver metastasis2021

    • Author(s)
      Koichiro Yamakado
    • Organizer
      APSCVIR 2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] RFA and Cryoablation of RCC2021

    • Author(s)
      Koichiro Yamakado
    • Organizer
      APSCVIR 2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 細径ラジオ波電極針の開発と凝固範囲の検討2019

    • Author(s)
      高木治行、山門亨一郎ほか
    • Organizer
      第20回RFA凍結療法研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] 肝動脈塞栓術がPD-L1の発現に与える影響について:ラット肝癌モデルを用いた検討2019

    • Author(s)
      高木治行、山門亨一郎ほか
    • Organizer
      第67回関西IVR研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] Translational Research in IO and Immunology2019

    • Author(s)
      Takaki H, Yamakado K, et al.
    • Organizer
      6th Asia-Pacific Congress of Interventional Oncology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Liver ablation2019

    • Author(s)
      Yamakado K.
    • Organizer
      Seminar for Interventional Radiology Asia-Pacific
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Lung and Kidney ablation2019

    • Author(s)
      Takaki H, Yamakado K
    • Organizer
      Seminar for Interventional Radiology Asia-Pacific
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] IVRのすべて2021

    • Author(s)
      吉川 公彦、荒井 保明、山門亨一郎、高木治行ほか
    • Total Pages
      624
    • Publisher
      メジカルビュー社
    • ISBN
      9784758321006
    • Related Report
      2020 Research-status Report
  • [Book] 臨床画像2020

    • Author(s)
      高木治行、山門亨一郎
    • Total Pages
      4
    • Publisher
      メジカルビュー社
    • Related Report
      2019 Research-status Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi