Development of Three-Dimensional Ultrasonic Doppler Method of Measuring Spatial Distribution of Blood Flow Velocity

三维超声多普勒血流速度空间分布测量方法的研制

• 批准号: 05680755
• 负责人: SHIINA Tsuyoshi
• 金额: $ 0.9万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05680755/
• 关键词: ultrasonic measurement; doppler method; blood flow distribution; 3D display; vector of velocity; 2D arrayd element; 2D arrayd ultrasonic probe; non-invasive measurement; 比侵襲生体計測

Although the color doppler method is widely used, the image does not represent the true veleocity of blood flow because it can measure only one component along the beam direction of three-dimensional velocity.We presented an idea of measuring three components of blood velocity at any point in the ROI by using two-dimensional array probe. The method has the following merits : real time measurement due to simple and parallel signal processing, and easier implementation compared with other methods due to the extension of conventional color doppler method.In this work, we examined practical problems for implementation. At first the performance, e.g., spatial resolution, accuracy, sensitivity to S/N and their relation to aperture size were evaluated by simulation analysis and basic experiment using flow phantom. Next the way to display the velocity distribution was investigated because three components for each measured value are plotted in the three-dimensional space and its image must be comprehensible in clincal use. At last the practicability of the method was evaluated.

虽然彩色多普勒方法被广泛应用，但由于它只能测量三维血流速度沿波束方向的沿着一个分量，图像不能反映血流的真实速度，因此提出了利用二维阵列探头测量ROI内任意点血流速度三个分量的思想。该方法具有以下优点：由于简单的并行信号处理，真实的时间测量，由于传统的彩色多普勒方法的扩展，与其他方法相比，更容易实现。首先，性能，例如，通过仿真分析和基础实验，评价了该系统空间分辨率、准确度、信噪比灵敏度及其与孔径大小的关系。其次，研究了流速分布的显示方法，因为每个测量值的三个分量被绘制在三维空间中，并且其图像在临床使用中必须是可理解的。最后对该方法的实用性进行了评价。

项目成果

T.Shiina: "Basic Investigation on Tree-Dimensional Color Doppler Method" Proc.of 8th Congress of the International Cardiac Doppler Society. (1995)

T.Shiina：“三维彩色多普勒方法的基础研究”国际心脏多普勒学会第八届大会论文集。

椎名 毅: "三次元カラードプラ法に関する実験的検討" 電気学会 医用・生体工学研究会資料. (印刷中). (1995)

Tsuyoshi Shiina：“三维彩色多普勒方法的实验研究”来自日本医学和生物工程研究小组电气工程师研究所的材料（正在出版）（1995）。

T.Shiina: "Quantitative Evaluation of Ultrasonic Characteristics" Proc.of the 7th Congress of World Federation for Ultrasound in Medicine and Biology. (1994)

T.Shiina：“超声特性的定量评估”世界超声医学和生物学联合会第七届大会论文集。

T. Shiina:"Basic Investigation on Three Dimensional Color Doppler Method" Proc. of 8th Congress of the International Cardiac Doppler Society. (印刷中). (1995)

T. Shiina：“三维彩色多普勒方法的基础研究”，国际心脏多普勒学会第八届大会论文集（1995 年）。

K.Hamamoto, T.Shiina: "An Investigation on Practicability of Reflection Tomography" Jap.J.Appl.Phys. Vol.33. 3181-3186 (1994)

K.Hamamoto、T.Shiina：“反射断层扫描实用性的调查”Jap.J.Appl.Phys。