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Development of non invasive lower urinary tract function test using ultrasound Doppler imaging

Research Project

Project/Area Number 13557135
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Urology
Research InstitutionOkayama University

Principal Investigator

KUMON Hiromi  Okayama University Graduate School of Medicine and Dentistry, Professor, 大学院・医歯学総合研究科, 教授 (30144760)

Co-Investigator(Kenkyū-buntansha) YOKOYAMA Teruhiko  Okayama University Hospital, Assistant, 医学部附属病院, 助手 (40325113)
KAJIYA Fumihiko  Okayama University Graduate School of Medicine and Dentistry, Professor, 大学院・医歯学総合研究科, 教授 (70029114)
NISHIGAKI Kazu  Yuge National College of maritime technology Principal, 学校長 (40031447)
MATSUNAKA Toshiyuki  Aloka Co.ltd, Division of TP technology, Manager, TP技術部, 部長(研究職)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥8,700,000 (Direct Cost: ¥8,700,000)
Fiscal Year 2002: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 2001: ¥4,600,000 (Direct Cost: ¥4,600,000)
Keywordsvoiding disorder / urodynamic study / bladder outlet obstruction / benign prostatic hyperplasia / Doppler ultrasonography
Research Abstract

1. Flow velocity of urine can be measured by ultrasound sonography
It had been believed to be impossible to measure the intraurethral flow velocity by ultrasonography, since urine does not contain any particles reflecting ultrasound. We hypothesized that according to Bernoulli's principle a decrease of flow pressure caused by an accelerated urinary flow produces micro bubbles associated with cavitation responsible for Doppler signals. This hypothesis was confirmed by A simultaneous detection of microtubbles specific to cavitation with a charged-coupled device (CCD) camera and Doppler signals with an ultrasound scanner was conducted.
2. Velocity related parameters are proved to be useful for evaluating bladder outlet obstruction(BOO).
Functional cross-sectional area at prostatic urethra (UFA=UR/UV: UV: velocity at prostatic urethra, UR: flow rate) and velocity ratio (VR=V1/V2: V1: velocity at prostatic urethra, V2: velocity at sphincteric urethra) were proved to be practical parameters far evaluating BOO. "'e investigated the best flow velocity related parameter, which allowed prediction of improvement of lower urinary tract symptoms (LUTS) after α 1-blocker treatment.. The patients with higher V2 might be poor responders against alpha-blocker treatment.
3. Custom made software has been improved.
In order to reduce analytic time and apply the system not only for BOO but also for whole voiding dysfunction, analytic software has been improved.
(1) Automatic plotting of ROI (region of interest) ~
(2) Indication of corrected angle
(3) Automatic graphic indication of previously proposed parameters (Al, A2 and VR)
(4) Automatic graphic indication of new parameters to analyze bladder function
4. Velocity-flow plots.
Two dimensional graph plots between velocity related parameter and flow rate in whole voiding has been performed. A delay of initial velocity signal may be useful to diagnose voiding dysfunction

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] Kusaka Nobuyuki: "Transrectal ultrasound for monitoring murine orthotopic prostate tumor"Prostate. 47(2). 118-124 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 小澤 秀夫: "超音波ドプラを用いた非侵襲的ビデオウロダイナミクスの開発"神経因性膀胱学会雑誌. 12(2). 200-206 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 西垣 和: "超音波カラードップラー法によるキャビテーションの検出と流速測定"神戸商船大学紀要. 49. 57-63 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 小澤秀夫, 横山光彦, 公文裕巳 他: "前立腺肥大症に対するα遮断薬投与によるIPSS改善度の予測-経会陰超音波ドプラ法の有用性-"日本泌尿器科学会雑誌. 93(2). 164 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 西口 潤, 小澤秀夫, 西垣 和, 公文裕巳 他: "超音波カラードプラ法によるモデル尿道内でのキャビテーションの検出と流速測定"日本泌尿器科学会雑誌. 93(2). 354 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 小澤秀夫, 横山光彦, 公文裕巳 他: "経会陰超音波ドプラによる流速信号と尿流率信号における時間差の検討"日本泌尿器科学会雑誌. 94(2). 171 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Watanabe, Y., Kumon, H.et al.: "Prediction for clinical outcome of α1-blocker therapy for men with lower urinary tract symptoms by using color Doppler ultrasound urodynamics"Urology. (In press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Nobuyuki Kusaka: "Transrectral ultrasound for monitoring murine orthatopic prostate tumor"Prostate. 47(2). 118-124 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hideo Ozawa: "Development of non-invasive video urodynamics using Doppler ultrasonography"Nurologic Bladder Society. 12(2). 200-206 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kazu Nishigaki: "Detection of cavitation and measurement of flow velocity by means of color. Doppler system"Kobe University of Mercantile Marine. 49. 57-63 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hideo Ozawa: "Prediction of symptomatic improvement after alpha-one blocker therapy for benign prostatic hyperplasia with non-invasive urodynamics using color Doppler ultrasound"Japan Urological Association. 93(2). 164 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Jun Nishiguchi: "Detection of cavitation and measurement of flow velocity in an experimental urethra by means of color Doppler system"Japan Urological. Aasociatioa 93(2). 354 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hideo Ozawa: "Investigation about the time lag between the Doppler signals from flow velocity and flow ueiag Doppler ultrasound sonography"Japan Urological Association 94(2). 171 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Yuuichi Watanabe: "Prrediction of clinical outcome of alpha one blocker therapy for men with lower urinary tract symptoms by using color Doppler Ultrasound urodynamics"Urology (INPRESS). (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 小澤秀夫, 横山光彦, 公文裕巳 他: "前立腺肥大症に対するα遮断薬投与によるIPSS改善度の予測-経会陰超音波ドプラ法の有用性-"日本泌尿器科学会雑誌. 93(2). 164 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 西口 潤, 小澤秀夫, 西垣 和, 公文裕巳 他: "超音波カラードプラ法によるモデル尿道内でのキャビテーションの検出と流速測定"日本泌尿器科学会雑誌. 93(2). 354 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 小澤秀夫, 横山光彦, 公文裕巳 他: "経会陰超音波ドプラによる流速信号と尿流率信号における時間差の検討"日本泌尿器科学会雑誌. 94(2). 171 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Watanabe, Y., Kumon, H., et al.: "Prediction for clinical outcome of α1-blocker therapy for men with lower urinary tract symptoms by using color Doppler ultrasound urodynamics"Urology. (In press). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Kusaka Nobuyuki: "Transrectal ultrasound for monitoring murine orthotopic prostate tumor"Prostate. 47(2). 118-124 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 小澤 秀夫: "超音波ドプラを用いた非侵襲的ビデオウロダイナミクスの開発"神経因性膀胱学会雑誌. 12(2). 200-206 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 西垣 和: "超音波カラードップラー法によるキャビテーションの検出と流速測定"神戸商船大学紀要. 49. 57-63 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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