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Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces

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Published on: July 26, 2016

Acoustic diffraction-resistant adaptive profile technology (ADAPT) for elasticity imaging.

Yuyang Gu^1,2, Viksit Kumar^1,2, E G Sunethra K Dayavansha^1,2

¹Department of Radiology, Massachusetts General Hospital, Center for Ultrasound Research and Translation, Boston, MA 02114, USA.

Science Advances

|November 1, 2023

Summary

This summary is machine-generated.

Acoustic diffraction-resistant adaptive profile technology (ADAPT) creates customizable, propagation-invariant acoustic beams. This breakthrough enables precise control of acoustic profiles for diverse applications in medicine, biology, and material science.

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Area of Science:

Acoustics
Biomedical Engineering
Materials Science

Background:

High-degree-of-freedom acoustic beam shaping is crucial for applications like ultrasound imaging and manipulation.
Current methods lack full control over acoustic pressure profiles during propagation.

Purpose of the Study:

To demonstrate an acoustic diffraction-resistant adaptive profile technology (ADAPT) for generating arbitrary, propagation-invariant acoustic beam profiles.
To present a general framework for flexible acoustic beam generation using linear array ultrasonic transducers.

Main Methods:

Leveraging wave number modulation and beam multiplexing.
Developing a general framework for acoustic beam generation with linear ultrasonic transducer arrays.
Implementing attenuation compensation for maintaining beam profiles in lossy materials.

Main Results:

Successfully generated propagation-invariant acoustic beams with desired profiles.
Demonstrated the ability to maintain beam profiles in lossy materials.
Showcased the benefit of ADAPT for shear wave elasticity imaging in evaluating tissue mechanical properties.

Conclusions:

ADAPT overcomes limitations in acoustic beam shaping, offering unprecedented control.
The technology is versatile and applicable to medicine, biology, and material science.
ADAPT enhances modalities like shear wave elasticity imaging for tissue property evaluation.