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Related Experiment Video

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Wideband Optical Detector of Ultrasound for Medical Imaging Applications

Wideband Optical Detector of Ultrasound for Medical Imaging Applications

Published on: May 11, 2014

Double-Stage Delay Multiply and Sum Beamforming Algorithm Applied to Ultrasound Medical Imaging.

Moein Mozaffarzadeh¹, Masume Sadeghi¹, Ali Mahloojifar¹

¹Department of Biomedical Engineering, Tarbiat Modares University, Tehran, Iran.

Ultrasound in Medicine & Biology

|December 26, 2017

Summary

A new ultrasound beamforming method, double-stage DMAS (DS-DMAS), significantly improves image quality. DS-DMAS reduces side lobes by 25% and enhances signal-to-noise ratio, resolution, and contrast compared to existing DMAS techniques.

Keywords:

Beamforming Contrast improvement Delay multiply and sum Linear-array imaging Resolution enhancement Ultrasound medical imaging

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Area of Science:

Medical Imaging
Acoustics
Signal Processing

Background:

Delay and Sum (DAS) beamforming is standard in ultrasound (US) imaging but yields suboptimal image quality.
Delay Multiply and Sum (DMAS) beamforming was developed to improve image quality but still struggles with side lobe levels and noise suppression.

Purpose of the Study:

To introduce a novel beamforming algorithm, Double-Stage DMAS (DS-DMAS), to overcome limitations of existing methods.
To enhance image quality in ultrasound imaging by improving side lobe reduction and noise suppression.

Main Methods:

A new beamforming algorithm, DS-DMAS, was developed by expanding the DMAS formula and replacing the inherent DAS algebra with DMAS.
The DS-DMAS algorithm was evaluated through numerical simulations and experimental studies.

Main Results:

DS-DMAS achieved approximately 25% lower side lobe levels compared to the standard DMAS method.
The new method demonstrated significant improvements: 23% in signal-to-noise ratio, 22% in full width at half-maximum, and 43% in contrast ratio over DMAS.

Conclusions:

The proposed DS-DMAS beamforming algorithm offers superior performance in ultrasound imaging.
DS-DMAS effectively reduces side lobes and enhances key image quality metrics, outperforming conventional DMAS.