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Real-time two-dimensional temperature imaging using ultrasound.

Dalong Liu¹, Emad S Ebbini

¹Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA. liuxx293@umn.edu

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference

|December 8, 2009

Summary

This summary is machine-generated.

This study introduces a novel real-time 2D ultrasound imaging system for monitoring temperature changes in tissues. The system demonstrates excellent repeatability and sensitivity for thermal monitoring applications.

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Area of Science:

Biomedical Engineering
Medical Imaging
Ultrasound Technology

Background:

Accurate temperature monitoring is crucial for various medical applications, including thermal therapies.
Existing methods for real-time temperature imaging in tissues have limitations in terms of speed and resolution.

Purpose of the Study:

To develop and validate a novel system for real-time 2D temperature imaging in tissue media using pulse-echo ultrasound.
To enable precise feedback for controlling heating sources in medical procedures.

Main Methods:

Utilized a SonixRP ultrasound scanner with a research interface for real-time radio frequency (RF) data acquisition and beam sequence control.
Developed a 2D temperature estimation algorithm implemented on a graphics processing unit (GPU) for rapid data processing.
Integrated the system for real-time display of temperature estimations.

Main Results:

Successfully demonstrated real-time 2D temperature imaging in tissue-mimicking phantoms and in vitro porcine heart tissue.
Achieved excellent repeatability and high sensitivity in temperature change detection.
The system provides real-time feedback for potential closed-loop control of heating sources.

Conclusions:

The developed ultrasound-based system offers a promising solution for real-time, non-invasive temperature monitoring in biological tissues.
The system's performance, validated in phantom and ex vivo studies, suggests its potential for clinical applications requiring precise thermal management.