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Updated: May 16, 2026
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Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System
Published on: March 6, 2019
[Modeling and simulation of responses from ultrasonic linear phased array]
Wenjing He1, Yuanzhong Zhu, Yufeng Wang
1BME, Department of Medical Image, NSMC, Nanchong 637000, China.
Summary
Phased array transducers allow electronic beam focusing and steering. Beam steering using delay times in phased arrays impacts main lobe intensity and increases side lobes, affecting ultrasound imaging.
Area of Science:
- Ultrasound physics
- Acoustic field analysis
- Transducer technology
Context:
- Phased array transducers offer electronic beam control for applications like medical ultrasound.
- Understanding far-field acoustic properties is crucial for optimizing transducer performance.
- Previous research often focused on simpler transducer geometries.
Purpose:
- To characterize the far-field 2D acoustic properties of phased array systems.
- To analyze the influence of array element geometry and electronic steering on beam formation.
- To provide a simulation-based understanding of ultrasound intensity distributions.
Summary:
- Far-field 2D properties of phased array systems were characterized using functions derived from rectangle sources, line arrays, and point sources.
- Numerical simulations revealed that the response of a rectangle line array is modulated by individual array elements.
- Phased array beam steering, controlled by delay times, was shown to reduce main lobe intensity while increasing side lobes.
Impact:
- Provides insights into the trade-offs between beam steering and signal intensity in phased arrays.
- Contributes to the design and optimization of ultrasound transducer systems.
- Enhances understanding of acoustic field manipulation for improved imaging resolution and performance.
