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Ultrasonography

Ultrasonography

Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...

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Micro Non-Uniform Linear Array (MNULA) for Ultrasound Plane Wave Imaging.

Yujia Tang^1,2, Zhangjian Li², Yaoyao Cui²

¹Division of Life Sciences and Medicine, School of Biomedical Engineering (Suzhou), University of Science and Technology of China, Hefei 230026, China.

Sensors (Basel, Switzerland)

|January 22, 2021

Summary

A new micro non-uniform linear array improves ultrasound plane wave imaging in confined spaces. This novel design reduces artifacts in the near-field, offering better image quality for endoscopic applications.

Keywords:

endoscope imaging quality near field non-uniform linear array plane wave imaging sound field

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Area of Science:

Medical Imaging
Ultrasound Technology
Biomedical Engineering

Background:

Ultrasound plane wave imaging offers speed and quality but is limited by transducer structure in specialized clinical settings.
Endoscopic environments require miniaturized transducers with limited near-field imaging range.
Micro linear arrays face element interference, degrading near-field imaging quality.

Purpose of the Study:

To propose and evaluate a novel micro ultrasound linear array structure for plane wave imaging.
To address limitations of current micro linear arrays in confined endoscopic environments.
To enhance near-field imaging quality by reducing element interference.

Main Methods:

Theoretical comparison via sound field and imaging simulations.
Fabrication of micro uniform and non-uniform linear arrays.
Experimental validation using phantom settings and evaluation parameters.

Main Results:

The micro non-uniform linear array demonstrated superior artifact reduction compared to the micro uniform array.
Improved imaging quality was observed, particularly for near-field targets.
Effective artifact elimination was achieved without additional signal processing.

Conclusions:

The micro non-uniform linear array is a promising solution for plane wave imaging in cramped environments like endoscopy.
This design overcomes limitations of traditional micro linear arrays in near-field imaging.
The study provides a viable approach for advancing endoscopic ultrasound imaging.