Ultrasonic Imaging Device Movement Vector Distribution Calculation
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Solution Overview
Problem
Current ultrasonic imaging devices require multiple operations and methods to obtain diverse information such as morphological, blood flow vector, and modulus of elasticity, which is time-consuming and inefficient, and struggles to measure surrounding information beyond blood flow due to limited temporal resolution and overlapping frequency bands.
Innovation Solution
An ultrasonic imaging device with a movement vector distribution calculation unit to process reception signals and extract desired movement vector components, allowing for simultaneous determination and display of movement vectors and their components within a predetermined imaging range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If multiple separate ultrasonic imaging methods are used to obtain diverse information (morphological, blood flow, modulus of elasticity), then the completeness of information is improved, but the inspection time and operational complexity increase
Solution Approach 1:
The patent combines multiple ultrasonic imaging methods into a single integrated system that simultaneously acquires morphological information, blood flow vectors, and modulus of elasticity data through unified signal processing. The movement vector distribution calculation unit processes reception signals to extract multiple types of information in parallel, eliminating the need for sequential separate measurements and reducing total inspection time while maintaining information completeness.
Solution Approach 2:
The ultrasonic imaging device is designed with multi-functionality to perform diverse measurements using a single system. The movement vector distribution calculation unit serves multiple purposes: it calculates blood flow vectors, determines tissue movement, and extracts modulus of elasticity information from the same reception signals, making the device universal and eliminating the need for multiple specialized imaging sessions.
2Loss of information
If multiple separate ultrasonic imaging methods are used to obtain diverse information, then the completeness of information is improved, but the device complexity and operational steps increase
Solution Approach 1:
The patent merges multiple imaging functions into a single integrated processing unit. The movement vector distribution calculation unit combines morphological imaging, Doppler blood flow measurement, and elastography processing into one unified system that handles all information extraction simultaneously, reducing device complexity and operational steps while maintaining complete information acquisition.
Solution Approach 2:
The device achieves universality through the movement vector distribution calculation unit, which performs multiple imaging functions through a single operational interface. This multi-functional design allows the device to obtain morphological, hemodynamic, and mechanical property information without requiring separate specialized modes or complex operational procedures.
3Ease of operation
If conventional Doppler filtering is used to extract blood flow velocity, then the measurement simplicity is improved, but the measurement precision for slow blood flow deteriorates due to overlapping frequency bands
Solution Approach 1:
The patent applies segmentation by dividing the movement vector distribution into distinct components based on their temporal and spatial characteristics. The separation filter segments blood flow vectors from tissue movement vectors by analyzing the temporal variation characteristics, allowing precise extraction of slow blood flow signals even when their frequency bands overlap with tissue movement frequencies.
Solution Approach 2:
The invention changes the processing parameter from simple frequency-based filtering to temporal variation analysis. By examining how movement vectors change over time, the separation filter can distinguish blood flow from tissue movement based on their different temporal patterns, improving measurement precision for slow blood flow while maintaining operational simplicity.
4Device complexity
If conventional frequency-based separation is used to distinguish tissue movement and blood flow, then the processing simplicity is improved, but the information accuracy for slow blood flow deteriorates due to frequency band overlap
Solution Approach 1:
The patent changes the separation parameter from frequency-based filtering to temporal variation characteristics. The separation filter analyzes how movement vectors change over time, using temporal patterns to distinguish blood flow from tissue movement. This parameter change improves blood flow measurement precision for slow flows while avoiding the complexity of multi-parameter processing.
Solution Approach 2:
The invention segments the movement vector distribution into blood flow and tissue movement components based on temporal variation characteristics. This segmentation approach, implemented through the separation filter, provides accurate separation of slow blood flow signals from overlapping tissue movement frequencies without increasing processing 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
Enables efficient extraction and display of multiple types of information at the same timing, improving inspection efficiency and enabling comparison of information across the same cross-section, while distinguishing between tissue movement, blood flow, and shear wave propagation.
Implementation Method 1
a probe 20 that transmits an ultrasonic wave to a subject 10 and receives an ultrasonic wave coming from the subject 10 due to the transmission
Implementation Method 2
when measuring a blood flow velocity based on a frequency shifted due to the Doppler effect
Implementation Method 3
by processing with a filter having an effect of removing the low frequency band region, only a shift frequency component due to the blood flow is extracted
Data Source
AI summary
The present invention aims to obtain and provide one or more types of information desired by an operator with a high efficiency. From a probe that transmits an ultrasonic wave to a subject and receives the ultrasonic wave coming from the subject due to the transmission, a reception signal is received and the reception signal is processed. Accordingly, a movement vector indicating a movement amount and a movement direction is calculated and a movement vector distribution is determined for a plurality of points set at least two-dimensionally in the subject. A distribution of one or more desired movement vector components is extracted from the movement vector distribution.