Ultrasonic Diagnostic Apparatus Sample Gate Tracking Accuracy
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Solution Overview
Problem
Existing ultrasonic diagnostic apparatuses face challenges in accurately tracking the position of a sample gate due to body motion and other influences, which can lead to inaccurate Doppler waveform analysis and reduced diagnosis efficiency.
Innovation Solution
The ultrasonic diagnostic apparatus includes processing circuitry that tracks the position of the sample gate by performing template matching on real-time two-dimensional ultrasonic images and displays information about the accuracy of tracking, allowing for precise adjustment and improved data acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If template matching is performed to track the sample gate position, then the sample gate position can be automatically adjusted, but the accuracy of tracking may be reduced due to body motion and other influences
Solution Approach 1:
The system performs template matching to automatically track and adjust the sample gate position, then feeds back the tracking accuracy information to the operator. This feedback mechanism allows the operator to assess whether the automatic tracking is reliable and manually adjust the sample gate if necessary, thereby resolving the contradiction between automation and precision.
2Ease of operation
If the sample gate position is manually set by the operator, then the initial positioning can be done, but the sample gate may deviate from the intended position due to body motion
Solution Approach 1:
The operator manually sets the initial sample gate position based on the two-dimensional ultrasonic image, which is the preliminary action. After this initial setting, the system automatically tracks and adjusts the sample gate position in real-time to compensate for body motion, ensuring position stability throughout the measurement process.
3Measurement precision
If real-time tracking is performed to maintain sample gate position, then measurement accuracy is improved, but processing time and computational load increase
Solution Approach 1:
The system performs template matching periodically at predetermined time intervals rather than continuously, which reduces the computational load and processing time while still maintaining adequate tracking accuracy. The operator can adjust the tracking frequency based on the specific measurement requirements and body motion characteristics.
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
This solution enhances the accuracy of Doppler waveform analysis by ensuring the sample gate is correctly positioned, thereby improving diagnosis efficiency and preventing errors caused by tracking inaccuracies.
Implementation Method 1
ultrasonic diagnostic apparatus generate and display a Doppler spectrum (Doppler waveform) indicating blood flow rate information by using Doppler information (Doppler signal) extracted from reflected waves of ultrasonic waves
Implementation Method 2
reflected waves of ultrasonic waves
Implementation Method 3
Doppler information (Doppler signal) extracted from reflected waves of ultrasonic waves
Data Source
AI summary
An ultrasonic diagnostic apparatus according to an embodiment includes processing circuitry. The processing circuitry tracks a position of a part where a sample gate is set to designate a position of a part where Doppler information is collected. The processing circuitry performs control to display information about accuracy of tracking of the position of the part described above.