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Updated: Jun 6, 2025

Three-dimensional Optical-resolution Photoacoustic Microscopy

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

Compact laser-diode-based optoacoustic mesoscopy.

Xiang Liu, Weiye Li, Yu-Hang Liu

|November 27, 2024

Summary

This summary is machine-generated.

A new compact laser diode scanner offers portable optoacoustic mesoscopy (OAM). This system achieves high-quality imaging comparable to bulky solid-state lasers, enabling clinical applications.

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Area of Science:

Biomedical Optics
Medical Imaging Technology

Background:

Solid-state lasers (SSLs) are standard for optoacoustic imaging but are too large for portable devices.
Compactness is crucial for clinical translation and commercialization of optoacoustic systems.

Purpose of the Study:

To develop a compact laser diode (LD)-based optoacoustic mesoscopy (CoLD-OAM) scanner.
To demonstrate the feasibility of portable optoacoustic imaging with high performance.

Main Methods:

Utilized a fiber-coupled laser diode source with dimensions of 46×43×11 mm.
Developed a CoLD-OAM system with adjustable pulse width (30-200 ns) and high pulse energy (up to 6 µJ).
Evaluated system performance using real-time imaging of the human wrist.

Main Results:

Achieved excellent pulse-to-pulse energy stability (0.42%).
Demonstrated real-time imaging of the human wrist with image quality comparable to SSL-based systems.
The compact LD source enables significantly smaller system footprints.

Conclusions:

The CoLD-OAM scanner represents a significant advancement in portable optoacoustic imaging.
This technology facilitates the development of clinically translatable and commercially viable optoacoustic systems.
Compact laser diode sources are a viable alternative to bulky SSLs for optoacoustic applications.