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Phase-coherence volumetric ultrasonic imaging of full matrix capture data using row-column-addressed array
Xuan Li1, Lishuai Liu1, Shijun Wang2
1Shanghai Key Laboratory of Intelligent Sensing and Detection Technology, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China.
The Journal of the Acoustical Society of America
|August 3, 2026
Summary
Row-column-addressed (RCA) arrays offer simpler 3D ultrasound imaging. New phase-coherence methods significantly improve image quality by reducing artifacts and enhancing resolution for RCA arrays.
Area of Science:
- Medical Imaging
- Acoustics
- Signal Processing
Background:
- Row-column-addressed (RCA) arrays simplify 3D volumetric ultrasonic imaging systems by reducing channel count.
- However, RCA arrays suffer from steering-angle-dependent acoustic fields and reduced receive sensitivity, leading to artifacts and lower image quality.
- Conventional imaging methods struggle to overcome these limitations.
Purpose of the Study:
- To develop and evaluate a systematic phase-coherence-based imaging framework for enhancing 3D volumetric imaging quality with RCA arrays.
- To suppress incoherent contributions in beamformed signals using statistical phase-coherence measures.
- To improve contrast ratio and reduce imaging artifacts in 3D ultrasound reconstructions.
Main Methods:
- Acquisition of full matrix capture data using RCA arrays.
- Development of a suite of 3D imaging algorithms based on statistical phase-coherence measures.
- Application of phase-coherence weighting to suppress incoherent signals and enhance beamformed data.
Main Results:
- Phase-coherence weighting significantly improved contrast ratio and reduced imaging artifacts compared to conventional delay-and-sum methods.
- The sign coherence factor demonstrated a good balance between computational efficiency and imaging performance.
- Near-field effects were effectively mitigated by the proposed methods.
Conclusions:
- Phase-coherence-based strategies can achieve high-quality 3D volumetric ultrasonic imaging with RCA arrays.
- These methods offer robust and interpretable volumetric reconstructions for various ultrasound applications.
- The developed framework enhances the utility of RCA arrays for advanced medical imaging.
