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

Development of a computerized system for analyzing facial nerve paralysis -A method using the optical flow-

Research Project

Project/Area Number 12671681
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Otorhinolaryngology
Research InstitutionKeio University

Principal Investigator

KUNIHIRO Takanobu  Keio University, School of Medicine, Assistant Professor, 医学部, 専任講師 (10170010)

Co-Investigator(Kenkyū-buntansha) 白石 清嗣  飛鳥インターナショナル株式会社, 研究員
KANZAKI Jin  Keio University, School of Medicine, Professor, 医学部, 教授 (00051441)
MINAMITANI Haruyuki  Keio University, Faculty of Science and Technology, Professor, 医学部, 専任講師 (70051779)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 2001: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2000: ¥2,400,000 (Direct Cost: ¥2,400,000)
Keywordsfacial nerve palsy / objective assessment / optical flow / computer / gradient method / 評価法
Research Abstract

We developed a computerized system to assess the degree of facial nerve paralysis. Our system calculates the optical flow throughout the facial area, using the gradient method.
The results obtained with our system were both precise and reproducible. They were almost identical to those obtained using the matching method, and the inter-examiner variability was minimal. In addition, when expressed using the diseased-to-healthy side ratio of the optical flow, the results correlated well with the scores assigned to each facial movement using Yanagihara's grading scale. The optical flow index, which we defined using the results, is also highly correlated with the total scores on Yanagihara's grading scale.
Another advantage of our system is that it permits flexible expression of the analysis results. For example, the optical flow for each small area within the facial region can be superimposed on the original picture of the patient. This enables intuitive understanding of the facial movements. Furthermore, the movement of each pixel in the facial region can be traced on a frame-to-frame basis. These two features are very useful for assessing associated movements.
Our system initially ran only on Linux, but it now also works on Windows. We expect that our system will be used widely in daily clinical practice.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] 田中敏幸, 吉田訓之, 國弘幸伸: "輪郭抽出法に基づく顔面神経麻痺評価"Facial N Res Jpn.. 20. 24-26 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 國弘幸伸, 田村友洋, 神崎 仁: "オプティカルフローを利用したビデオ画像の解析"Facial N Res Jpn.. 20. 14-16 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 田中敏幸, 尾留川昌平, 國弘幸伸: "輪郭抽出法による暗面神経麻痺の定量的評価"Facial N Res Jpn.. 21. 82-85 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 田中敏幸, 根本順子, 國弘幸伸: "輪郭抽出に基づいた顔面神経麻痺の定量的評価法(3)"Facial N Res Jpn.. 22. 99-101 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kunihiro T, Higashino K, Kanzaki J: "Classic hypoglossal-facial nerve anastomosis after acoustic after acoustic neuroma resection"ORL. 65. 1-6 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 南谷晴之, 橋本 尚, 飯島淳彦, 國弘幸伸: "顔表情運動の画像解析による顔面神経麻痺の診断システム"生体工学. 41(印刷中). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Tanaka T, Yoshida N, Kunihiro T: "Estimation of facial nerve paralysis based on contour extraction"Facial N Res Jpn.. 20. 24-26 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kunihiro T, Tamura T, Kanzaki J: "Computerized quantitative analysis of facial nerve paralysis. -A new method utilizing optical flow-"Facial N Res Jpn.. 20. 14-16 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Tanaka T, Orukawa S, Kunihiro T: "Quantitative estimation of facial palsy by contour extraction"Facial N Res Jpn.. 21. 82-85 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Tanaka T, Nemoto J, Kunihiro T: "Quantitative estimation of facial paralysis based on contour extraction (3)"Facial N Res Jpn.. 22. 99-101 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Kunihiro T, Higashino K, Kanzaki J: "Classic hypoglossal facial nerve anastomosis after acoustic neuroma resection. -A review of 46 cases-"ORL. 65. 1-6 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Minamitani H, Iijima A, Kunihiro T: "Diagnostic system for the quantitative assessmenty of facial nerve palsy based on the image analysis of facial movements"Trans Jpn Soc Med Biol Eng. (in print).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 國弘幸伸,田村友洋,神崎仁: "オプティカルフローを利用したビデオ画像の解析"Facial N Res Jpn. 20. 14-16 (2000)

    • Related Report
      2000 Annual Research Report

URL: 

Published: 2000-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi