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Handheld Large 2-D Array With Azimuthal Planewave and Row-Multiplexed Elevation Beamforming Enabled by Local ASIC
Summary
This study introduces a novel handheld large 2D ultrasound array probe for improved medical imaging. The advanced probe achieves significant penetration and resolution, showing promise for future clinical applications.
Area of Science:
- Ultrasound imaging
- Medical device engineering
- Array transducer technology
Background:
- Large aperture 2D arrays enhance lateral and contrast resolution in ultrasound imaging.
- Custom Application Specific Integrated Circuit (ASIC) multiplexing improves array performance.
Purpose of the Study:
- To develop and evaluate a modular, handheld large aperture 2D ultrasound array probe for enhanced human imaging.
- To demonstrate the capabilities of the prototype for 2D and 3D ultrasound imaging.
Main Methods:
- Development of a 1,024-element (64x16) 2D array probe with custom ASIC multiplexing.
- Integration of preamplifiers and FPGA for digital control and local buffering.
- Testing of the probe's imaging performance, including penetration, resolution, and contrast-to-noise ratio (CNR).
Main Results:
- Achieved imaging penetration down to 140 mm.
- Experimental lateral and axial resolution of 1.1 mm and 0.4 mm at 67 mm depth, respectively.
- Demonstrated in-vivo liver imaging in human volunteers with promising preliminary results.
Conclusions:
- The developed handheld large 2D array probe offers significant improvements in ultrasound imaging capabilities.
- The prototype shows potential for future clinical diagnostic applications, particularly in deep tissue imaging.
