Measurement of Angular Dependence of Ultrasonic Echo for Estimation of Surface Roughness
スポンサーリンク
概要
- 論文の詳細を見る
Atherosclerosis is the main cause of circulatory diseases, and it is very important to diagnose atherosclerosis in its early stage. In an early stage of atherosclerosis, the luminal surface of an arterial wall becomes rough due to injury of the endothelium. Conventional ultrasonic diagnostic equipments cannot detect such micron-order surface roughness because their spatial resolution is, at most, 100 μm. In this study, for the accurate detection of surface roughness, ultrasonic beams were insonified from various angles relative to the surface of an object that has a micron-order asperity. Then, we focused on the angular dependence of echo amplitude and frequency characteristics in both temporal and spatial domains. Using this method, it is shown that the angular dependence and frequency characteristics vary when an object has a surface roughness that cannot be detected by conventional B-mode imaging using linear scanning.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2007-07-30
著者
-
Kanai Hiroshi
Graduate School Of Biomedical Engineering Tohoku University
-
Hasegawa Hideyuki
Graduate School Of Biomedical Engineering Tohoku University
-
Kudo Kazuki
Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
関連論文
- Relationship between upper limb peripheral artery stiffness using the radial artery and atherosclerotic parameters
- Tissue structure of arterial wall revealed with elasticity imaging
- Cross-Sectional Elasticity Imaging of Arterial Wall by Comparing Measured Change in Thickness with Model Waveform
- Measurement and analysis of vibration in the myocardium telescopic motion for novel echo-graphic diagnosis
- Tissue Characterization of Atherosclerotic Plaque by Ultrasonic Measurement of Regional Elasticity
- Ultrasonic Measurement of Regional Elasticity of Arterial Wall for Evaluation of Vulnerability of Atherosclerotic Plaque
- Two-Dimensional Tracking of Heart Wall for Detailed Analysis of Heart Function at High Temporal and Spatial Resolutions
- Ultrasonic Imaging of Propagation of Contraction and Relaxation in the Heart Walls at High Temporal Resolution
- Reduction of Influence of Decrease in Signal-to-Noise Ratio in Measurement of Change in Thickness of Arterial Wall Due to Heartbeat
- Accuracy Evaluation in the Measurement of a Small Change in the Thickness of Arterial Walls and the Measurement of Elasticity of the Human Carotid Artery
- Automated Identification of the Heart Wall Throughout the Entire Cardiac Cycle Using Optimal Cardiac Phase for Extracted Features
- Noninvasive Measurement of Transient Change in Viscoelasticity Due to Flow-Mediated Dilation Using Automated Detection of Arterial Wall Boundaries
- Multi Element Diverging Beam from a Linear Array Transducer for Transverse Cross Sectional Imaging of Carotid Artery: Simulations and Phantom Vessel Validation
- Measurement of Angular Dependence of Ultrasonic Scattering from Wire Phantom Mimicking Myocardial Fiber
- In Vivo Measurement of Small Velocity Signals and Change in Thickness of the Heart Walls
- Ultrasonic Measurement of Transient Change in Stress–Strain Property of Radial Arterial Wall Caused by Endothelium-Dependent Vasodilation
- Modified Phased Tracking Method for Measurement of Change in Thickness of Arterial Wall
- High-frame-rate echocardiography using diverging transmit beams and parallel receive beamforming
- Improvement in Accuracy of Ultrasonic Measurement of Transient Change in Viscoelasticity of Radial Arterial Wall Due to Flow-Mediated Dilation by Adaptive Low-Pass Filtering (Special Issue : Ultrasonic Electronics)
- Evaluation of Rate of Change in Thickness of Heart Wall by Measuring Time Variation of Ultrasonic Integrated Backscatter during a Cardiac Cycle (Special Issue : Ultrasonic Electronics)
- Frequency Analysis of Strain of Cylindrical Shell for Assessment of Viscosity
- Construction of Reference Data for Tissue Characterization of Arterial Wall Based on Elasticity Images
- Optimization of Correlation Kernel Size for Accurate Estimation of Myocardial Contraction and Relaxation
- Tissue Classification of Arterial Wall Based on Elasticity Image
- Measurement of displacement and strain in biological tissue generated by ultrasonic dual acoustic radiation force
- Basic Study on Detection of Outer Boundary of Arterial Wall Using Its Longitudinal Motion
- Change in Elasticity Caused by Flow-Mediated Dilation Measured Only for Intima–Media Region of Brachial Artery
- Measurement of Angular Dependence of Ultrasonic Echo for Estimation of Surface Roughness
- Cross-Sectional Elastic Imaging of Arterial Wall Using Intravascular Ultrasonography
- Modeling of Ultrasonic Echo from Posterior Arterial Wall for Accurate in-vivo Detection of Intima-Media Complex Boundaries
- Cross-Sectional Elasticity Imaging of Carotid Arterial Wall in Short-Axis Plane by Transcutaneous Ultrasound
- Generation of Strain Inside Objects Using Dual Acoustic Radiation Force
- Threshold Setting for Likelihood Function for Elasticity-Based Tissue Classification of Arterial Walls by Evaluating Variance in Measurement of Radial Strain
- Measurement of Elastic Moduli of the Arterial Wall at Multiple Frequencies by Remote Actuation for Assessment of Viscoelasticity
- Measurement of Change in Wall Thickness of Cylindrical Shell Due to Cyclic Remote Actuation for Assessment of Viscoelasticity of Arterial Wall
- Estimation of Scatterer Diameter Using Ultrasonic Backscattering Property for Assessment of Red Blood Cell Aggregation
- Designing Beam Steering for Accurate Measurement of Intima-Media Thickness at Carotid Sinus
- Detection of Arterial Wall Boundaries Using an Echo Model Composed of Multiple Ultrasonic Pulses (Special Issue : Ultrasonic Electronics) -- (Biomedical ultrasound)
- Accurate Ultrasonic Measurement of Surface Profile Using Phase Shift of Echo and Inverse Filtering
- Improvement of Automated Identification of the Heart Wall in Echocardiography by Suppressing Clutter Component
- Investigation of Frequency Characteristics in Cutting of Soft Tissue Using Prototype Ultrasonic Knives
- Automated Detection of Intima-Media Complex Boundaries in Longitudinal Section of Carotid Artery by Fitting Echo Model Composed of Multiple Ultrasonic Pulses to Measured Signal
- Ultrasonic Measurement of Minute Displacement of Object Cyclically Actuated by Acoustic Radiation Force
- Increasing Bandwidth of Ultrasound Radio Frequency Echoes Using Wiener Filter for Improvement of Accuracy in Measurement of Intima--Media Thickness
- Flow-Mediated Change in Viscoelastic Property of Radial Arterial Wall Measured by 22 MHz Ultrasound
- Ultrasonic Measurement of Change in Elasticity due to Endothelium Dependent Relaxation Response by Accurate Detection of Artery-Wall Boundary
- Modeling of Ultrasonic Echo from Posterior Arterial Wall for Accurate in-vivo Detection of Intima-Media Complex Boundaries