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Related Experiment Video

Updated: Jan 20, 2026

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An adaptive imaging method for ultrasound coherent plane-wave compounding based on the subarray zero-cross factor.

Chichao Zheng1, Hao Wang1, Xiang Xu1

  • 1Department of Biomedical Engineering, Hefei University of Technology, Hefei 230009, China.

Ultrasonics
|September 4, 2019
PubMed
Summary

A new adaptive weighting method, subarray zeros-cross factor (SZF), enhances ultrasound image quality in coherent plane-wave compounding (CPWC). SZF effectively suppresses noise and improves contrast ratio and resolution in both simulations and experiments.

Keywords:
Coherence factorCoherent plane-wave compoundingSubarray zeros-cross factorUltrasound imaging

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Area of Science:

  • Ultrasound imaging
  • Medical imaging physics

Background:

  • Coherent plane-wave compounding (CPWC) utilizes backscattered signals from plane waves at various angles for high-quality imaging.
  • Adaptive weighting techniques are employed to further enhance CPWC image quality.

Purpose of the Study:

  • To introduce and evaluate the subarray zeros-cross factor (SZF) as an adaptive weighting factor for CPWC.
  • To assess the effectiveness of SZF in improving image quality, specifically contrast ratio (CR) and resolution.

Main Methods:

  • SZF is calculated using the polarity of plane-wave imaging results from adjacent steering angles to estimate wave coherence.
  • The method was validated through both simulations and experimental studies.

Main Results:

  • SZF demonstrated superior performance in contrast ratio and resolution compared to traditional CPWC.
  • Maximal CR improvements of 125.4% (simulated cysts) and 197.9% (experimental cysts) were achieved.
  • SZF outperformed coherence factor (CF) and generalized coherence factor (GCF) in contrast-to-noise and speckle signal-to-noise ratios in the near field, and CR in the far field.

Conclusions:

  • The proposed subarray zeros-cross factor (SZF) effectively improves ultrasound image quality in CPWC.
  • SZF offers significant enhancements in contrast ratio and resolution, outperforming existing methods.
  • Optimal comprehensive performance was observed with subarray lengths between 10 and 12.