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Updated: Apr 25, 2026
Three-dimensional Optical-resolution Photoacoustic Microscopy
Published on: May 3, 2011
Thermally enhanced signal strength and SNR improvement of photoacoustic radar module
1Center for Advanced Diffusion Wave Technologies (CADIFT), Dept. of Mechanical and Industrial Engineering, University of Toronto, Toronto M5S3G8, Canada.
Abstract:
A thermally enhanced method for improving photoacoustic imaging depth and signal-to-noise (SNR) ratio is presented in this paper. Experimental results showed that the maximum imaging depth increased by 20% through raising the temperature of absorbing biotissues (ex-vivo beef muscle) uniformly from 37 to 43°C, and the SNR was increased by 8%. The parameters making up the Gruneisen constant were investigated experimentally and theoretically. The studies showed that the Gruneisen constant of biotissues increases with temperature, and the results were found to be consistent with the photoacousitc radar theory.
