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Distinguishing acute encephalopathy by acute phase using machine lerning and self-organizing map

Research Project

Project/Area Number 19K17362
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionKagawa Prefectural College of Health Sciences

Principal Investigator

Masayoshi Oguri  香川県立保健医療大学, 保健医療学部, 講師 (70791078)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords急性脳症 / 小児 / 脳波解析 / power spectrum / phase lag index / 自己組織化マップ / 熱成けいれん重積 / 急性期 / Phase lag index / Power spectrum analysis / 熱性けいれん重積 / 機械学習
Outline of Research at the Start

後遺症を高率に残す急性脳症は高熱とけいれん重積で発症するため、予後良好な熱性けいれん重積と症状が類似しており、発症早期鑑別が難しく、予後予測法も未だに確立していない。近年私たちは、急性脳症と熱性けいれん重積患者の脳波解析を行い、急性脳症患者において目視ではわからない速波成分の有意な減少を発見した。本研究では、脳波解析を行った結果をもとに、機械学習を利用した自己組織化マップを使用して急性脳症分類パターンマップを作成し、急性脳症と熱性けいれん重積の新たな自動鑑別診断および予後予測法を開発する。

Outline of Final Research Achievements

This study aimed at developing a test method that can quantitatively analyze brain waves in bipolar induction of AESD and FS and distinguish individual patients in the early stage of onset. The results conveyed that AESD showed a significantly lower value than FS due to alpha and fast wave components in EEG analysis. Further, the functional connectivity of the brain was increased. In addition, 16 out of 20 AESD cases could be diagnosed from the AESD diagnosis map using the self-organizing map.
By performing EEG analysis for AESD within 48 hours of onset, it is possible that U-fiber disorders may be detected at an early stage before consulting imaging results. Furthermore, it is a distinguishing point from FS, which shows slow waves after status epilepticus.

Academic Significance and Societal Importance of the Research Achievements

本研究により、発症48時間以内の脳波解析を用いることでAESDとFSの客観的な鑑別点を明らかにすることができた。また、脳波解析結果を用いることで、発症後急性期におけるAESDとFSの鑑別を行える可能性が考えられた。また、自己組織化マップを用いることで、AESDとFSの自動鑑別診断の可能性を示すことができた。
今後、症例数を増やして自動診断マップの有用性を確認することで、臨床現場で用いられている脳波計に組み込めるソフトを開発できる。ソフトが完成し、臨床の脳波計に組み込むことが可能となれば、発症急性期にAESDとFSの鑑別診断補助システムとして稼働でき、急性脳症の早期鑑別が可能となる。

Report

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

    (21 results)

All 2022 2021 2020 2019

All Journal Article (12 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 12 results,  Open Access: 7 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Influence of gender on diaphragm thickness using a method for determining intima media thickness in healthy young adults2022

    • Author(s)
      Oguri Masayoshi、Okanishi Tohru、Ikeguchi Takuya、Ogo Kaoru、Kanai Sotaro、Maegaki Yoshihiro、Wada Shinichi、Himoto Takashi
    • Journal Title

      BMC Medical Imaging

      Volume: 22 Issue: 1 Pages: 1-7

    • DOI

      10.1186/s12880-022-00748-y

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Gait disturbance in a patient with de novo 1.0-kb SOX2 microdeletion2022

    • Author(s)
      Yamada Hiroyuki、Okanishi Tohru、Okazaki Tetsuya、Oguri Masayoshi、Fukuda Hiromi、Uchiyama Yuri、Mizuguchi Takeshi、Matsumoto Naomichi、Maegaki Yoshihiro
    • Journal Title

      Brain and Development

      Volume: 44 Issue: 1 Pages: 68-72

    • DOI

      10.1016/j.braindev.2021.07.007

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Phase Lag Analyses on Ictal Scalp Electroencephalography May Predict Outcomes of Corpus Callosotomy for Epileptic Spasms2020

    • Author(s)
      Oguri Masayoshi、Okanishi Tohru、Kanai Sotaro、Baba Shimpei、Nishimura Mitsuyo、Ogo Kaoru、Himoto Takashi、Okanari Kazuo、Maegaki Yoshihiro、Enoki Hideo、Fujimoto Ayataka
    • Journal Title

      Frontiers in Neurology

      Volume: 11 Pages: 576087-576087

    • DOI

      10.3389/fneur.2020.576087

    • NAID

      120006979700

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Frequent epileptic apnoea in a patient with Pitt-Hopkins syndrome2020

    • Author(s)
      Yamada Hiroyuki、Tamasaki Akiko、Oguri Masayoshi、Hori Ikumi、Saitoh Shinji、Maegaki Yoshihiro
    • Journal Title

      Epileptic Disorders

      Volume: 22 Issue: 5 Pages: 673-677

    • DOI

      10.1684/epd.2020.1212

    • NAID

      120006975634

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Olfactory function deteriorates in patients with Parkinson's disease complicated with REM sleep behavior disorder.2020

    • Author(s)
      Nomura T, Nomura Y, Oguri M, Hirooka Y, Hanajima R.
    • Journal Title

      eNeurologicalSci.

      Volume: 20 Pages: 100261-100261

    • DOI

      10.1016/j.ensci.2020.100261

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Insufficient Efficacy of Corpus Callosotomy for Epileptic Spasms With Biphasic Muscular Contractions2020

    • Author(s)
      Kanai Sotaro、Okanishi Tohru、Nishimura Mitsuyo、Oguri Masayoshi、Enoki Hideo、Maegaki Yoshihiro、Fujimoto Ayataka
    • Journal Title

      Frontiers in Neurology

      Volume: 11 Pages: 232-232

    • DOI

      10.3389/fneur.2020.00232

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Prevalence and clinical characteristics of children with medical complexity in Tottori Prefecture, Japan: A population-based longitudinal study2020

    • Author(s)
      Yamada Hiroyuki、Ohno Koyo、Shiota Madoka、Togawa Masami、Utsunomiya Yasushi、Akaboshi Shinjiro、Tsuchie Hirokazu、Okada Takayoshi、Oguri Masayosi、Higami Shigeru、Noma Hisashi、Maegaki Yoshihiro
    • Journal Title

      Brain and Development

      Volume: 42 Issue: 10 Pages: 747-755

    • DOI

      10.1016/j.braindev.2020.06.008

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] High-frequency component in flash visual evoked potentials in type 3 Gaucher disease2020

    • Author(s)
      Oguri Masayoshi、Saito Yoshiaki、Okanishi Tohru、Matuura Yuka、Akiyama Shota、Ikeguchi Takuya、Narita Aya、Hirooka Yasuaki、Maegaki Yoshihiro
    • Journal Title

      Brain and Development

      Volume: 42 Issue: 1 Pages: 19-27

    • DOI

      10.1016/j.braindev.2019.08.005

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Atypical gamma functional connectivity pattern during light sleep in children with attention deficit hyperactivity disorder2020

    • Author(s)
      Ueda Riyo、Takeichi Hiroshige、Kaga Yoshimi、Oguri Masayoshi、Saito Yoshihiko、Nakagawa Eiji、Maegaki Yoshihiro、Inagaki Masumi
    • Journal Title

      Brain and Development

      Volume: 42 Issue: 2 Pages: 129-139

    • DOI

      10.1016/j.braindev.2019.11.001

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Atypical Symptoms in Migraine-Related Alice in Wonderland Syndrome: Expansion of the Phenotype and Reflection on the Pathomechanism2019

    • Author(s)
      Matsuura Kazuki、Ishikura Ryoko、Oguri Masayoshi、Saito Yoshiaki
    • Journal Title

      Yonago Acta Medica

      Volume: 62 Issue: 1 Pages: 163-165

    • DOI

      10.33160/yam.2019.03.023

    • NAID

      130007626284

    • ISSN
      0513-5710, 1346-8049
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Developing a mouse model of acute encephalopathy using low-dose lipopolysaccharide injection and hyperthermia treatment2019

    • Author(s)
      Kurata Hirofumi、Saito Kengo、Kawashima Fumiaki、Ikenari Takuya、Oguri Masayoshi、Saito Yoshiaki、Maegaki Yoshihiro、Mori Tetsuji
    • Journal Title

      Experimental Biology and Medicine

      Volume: 244 Issue: 9 Pages: 743-751

    • DOI

      10.1177/1535370219846497

    • NAID

      120006778377

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Symmetry of ictal slow waves may predict the outcomes of corpus callosotomy for epileptic spasms2019

    • Author(s)
      Kanai Sotaro、Oguri Masayoshi、Okanishi Tohru、Itamura Shinji、Baba Shimpei、Nishimura Mitsuyo、Homma Yoichiro、Maegaki Yoshihiro、Enoki Hideo、Fujimoto Ayataka
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 19733-19733

    • DOI

      10.1038/s41598-019-56303-3

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 香川県立保健医療大学における臨床生理学実習の新型コロナウイルス感染対策について2021

    • Author(s)
      大栗聖由,小河佳織,末澤千草,太田安彦,山口航,樋本尚志
    • Organizer
      第15回日本臨床検査学教育学会学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 脳波周波数解析を用いた小児けいれん重積型(二相性)急性脳症の早期バイオマーカーの確立2021

    • Author(s)
      大栗聖由,岡西徹,金井創太郎,前垣,義弘
    • Organizer
      第51回日本臨床神経生理学会学術大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Assessment of acute encephalopathy with biphasic seizures and late reduced diffusion from febrile status epileptics and febrile seizure using EEG spectrum analysis2020

    • Author(s)
      Masayoshi Oguri , Tohru Okanishi, Ichiro Kuki, Yuko Nakamura, Takashi Himoto, Yoshihiro Maegaki
    • Organizer
      ISDEE2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Early differentiation of acute encephalopathy with biphasic seizures and late reduced diffusion in patients with febrile status epilepticus using phase lag index2020

    • Author(s)
      Masayoshi Oguri, Masashi Nishiyama, Yoshio Iwai, Yoshihiro, Maegaki
    • Organizer
      The International Child Neurology Association virtual Congress 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 健常者における横隔膜筋厚と口腔内圧の検討2020

    • Author(s)
      大栗 聖由, 池口 拓哉, 和田 晋一, 小河 佳織, 前垣 義弘, 樋本 尚志
    • Organizer
      第50回日本臨床神経生理学会学術大会
    • Related Report
      2020 Research-status Report
  • [Presentation] EARLY DIFFERENTIATION OF ACUTE ENCEPHALOPATHY WITH BIPHASIC SEIZURES AND LATE REDUCED DIFFUSION FROM FEBRILE STATUS EPILEPTICUS USING EEG ANALYSIS2019

    • Author(s)
      Shota AKIYAMA, Masayoshi OGURI, Masashi NISHIYAMA, Yuka MATSUURA, Yoshiaki SAITO, Yasuaki Hirooka, and Yoshihiro MAEGAKI
    • Organizer
      The 20th International Symposium on Status Epilepticus
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 脳波を用いたけいれん重積型急性脳症(AESD)と熱性けいれん(FS)の早期鑑別2019

    • Author(s)
      秋山 翔太、大栗 聖由、西山 正志、池口 拓哉、佐藤 研吾、廣岡 保明 、前垣 義 弘
    • Organizer
      日本臨床検査教育協議会
    • Related Report
      2019 Research-status Report
  • [Patent(Industrial Property Rights)] けいれん重積型急性脳症の診断支援装置、診断支援プログラム及び診断支援方法2020

    • Inventor(s)
      前垣義弘、大栗聖由、岩井儀雄、西山正志、臼井愛美
    • Industrial Property Rights Holder
      前垣義弘、大栗聖由、岩井儀雄、西山正志、臼井愛美
    • Industrial Property Rights Type
      特許
    • Filing Date
      2020
    • Acquisition Date
      2020
    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] けいれん重積型急性脳症の診断支援装置2019

    • Inventor(s)
      前垣義弘、大栗聖由
    • Industrial Property Rights Holder
      前垣義弘、大栗聖由
    • Industrial Property Rights Type
      特許
    • Filing Date
      2019
    • Acquisition Date
      2021
    • Related Report
      2021 Annual Research Report

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

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