Vector Flow Imaging for Angle-Independent Turbulent Blood Flow
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Solution Overview
Problem
Conventional Doppler ultrasound imaging is angle-dependent, limiting its ability to accurately resolve flow direction and quantify blood flow, especially in turbulent conditions, which is crucial for diagnosing cardiovascular diseases.
Innovation Solution
Utilizing vector flow imaging techniques to determine beam-angle-independent velocity components and display flow direction variations through color-coded maps, allowing for enhanced visualization and quantification of turbulent blood flow patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional Doppler imaging is used, then the system is simple and widely used, but it is angle-dependent and can only provide one-dimensional velocity estimation, limiting accurate flow assessment
Solution Approach 1:
The patent transitions from one-dimensional conventional Doppler velocity estimation to two-dimensional vector flow imaging by estimating both axial and lateral velocity components. This dimensional expansion enables accurate flow direction resolution independent of beam angle, directly resolving the technical contradiction between measurement precision and device complexity.
2Measurement precision
If conventional Doppler imaging is used, then the system is easy to operate, but it introduces measurement bias in velocity due to angle dependence
Solution Approach 1:
The patent replaces the angle-dependent mechanical Doppler measurement system with a computational vector flow imaging system that uses signal processing algorithms to estimate velocity components in multiple directions. This substitution eliminates measurement bias while maintaining ease of operation through automated processing.
3Reliability
If vector flow imaging is implemented, then accurate beam-angle-independent velocity components are obtained, but the device complexity increases
Solution Approach 1:
The patent changes the fundamental parameters measured from single-axis Doppler frequency shift to multi-component velocity vectors through advanced signal processing. This parameter transformation enables reliable, angle-independent flow assessment while the computational approach manages the inherent complexity through algorithmic processing rather than hardware complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides accurate and detailed visualization and quantification of blood flow, aiding in the diagnosis and monitoring of cardiovascular conditions such as artery stenosis and cardiac disorders by overcoming the limitations of conventional Doppler imaging.
Implementation Method 1
Ultrasound Doppler flow imaging has been used as a non-invasive diagnostic tool for assessment and quantification of blood flow hemodynamics
Data Source
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AI summary
A system for visualization and quantification of ultrasound imaging data according to embodiments of the present disclosure may include a display unit, and a processor communicatively coupled to the display unit and to an ultrasound imaging apparatus for generating an image from ultrasound data representative of a bodily structure and fluid flowing within the bodily structure. The processor may be configured to estimate axial and lateral velocity components of the fluid flowing within the bodily structure, determine a plurality of flow directions within the image based on the axial and lateral velocity components, differentially encode the flow directions based on flow direction angle to generate a flow direction map, and cause the display unit to concurrently display the image including the bodily structure overlaid with the flow direction map.