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A new delay technique with application to ultrasound phased-array imaging systems.
Ultrasonics
|September 1, 1979
Summary
A new ultrasound processing technique steers receiver directivity by controlling echo delays. This method uses echo carrier phasing and a novel sampled-data delay-line for envelope delay, improving ultrasound imaging.
Area of Science:
- Medical Imaging
- Ultrasound Technology
- Signal Processing
Background:
- Ultrasound phased-array systems steer receiver directivity by controlling element echo delays.
- Accurate delay control is crucial for effective beamforming and image quality.
Purpose of the Study:
- Introduce a novel processing technique for steering receiver directivity in ultrasound phased-array systems.
- Enable independent control of phase delay to compensate for array element response variations.
Main Methods:
- A new processing technique is presented that involves phasing the echo carrier and delaying the echo envelope.
- A novel analogue sampled-data delay-line is utilized for envelope delay.
- Independent control of phase delay is achieved.
Main Results:
- The technique effectively steers the receiver directivity pattern.
- Independent phase delay control allows compensation for random phase errors.
- The new sampled-data delay-line facilitates precise envelope delay.
Conclusions:
- The proposed processing technique offers an effective method for steering receiver directivity in ultrasound phased-array imaging.
- Independent phase delay control enhances robustness against array element non-uniformities.
- The novel analogue sampled-data delay-line is a key component for this advanced signal processing.