Development of tissue viscoelasticity imaging technology based on high frame rate ultrasound imaging method

2014 Fiscal Year Final Research Report

• Project/Area Number: 25870376
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Medical systems; Biomedical engineering/Biomaterial science and engineering
• Research Institution: Kyoto University
• Principal Investigator: YAMAKAWA Makoto 京都大学, 先端医工学研究ユニット, 特定准教授 (60344876)
• Research Collaborator: SHIINA Tsuyoshi 京都大学, 医学研究科, 教授 (40192603) ; KONDO Kengo 京都大学, 健康長寿社会の総合医療開発ユニット, 特定助教 (50649233)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 超音波 / 組織粘弾性イメージング / 高フレームレート計測 / ひずみ分布 / せん断波

Outline of Final Research Achievements

We proposed the tissue viscoelasticity imaging method which can measure tissue viscoelasticity quantitatively and can evaluate the frequency characteristic of tissue viscoelasticity. In this method, we vibrate a tissue with an ultrasound probe, and we measure the tissue strain distribution and strain distribution of reference area using high frame rate ultrasound imaging method. We also proposed the tissue elasticity imaging method using shear wave generated by probe vibration. We evaluated the validity, accuracy and limit of the proposed methods by simulations and phantom experiments. Furthermore, we developed the tissue viscoelasticity imaging system based on the proposed methods.

Free Research Field

医用超音波工学