Analysis and modeling of a system for optoacoustic tomography based on heterodyne optical interferometry
DOI:
https://doi.org/10.37537/rev.elektron.5.2.139.2021Keywords:
optoacoustic, interferometer, electrical noiseAbstract
In this work, the source of the artifacts introduced in the images obtained with an optoacoustic tomography system based on the software-defined optoelectronics concept are analyzed and characterized. It is shown that the measured signals are affected both by the cylindrical geometry of the optical sensor and by electrical noise. The latter has well-defined frequencies within the spectrum caused by the electronics used in the heterodyning process of the ultrasound optical detector. A way to include these effects in simulated signals is proposed and the model is tested against measurements. The results of this work will allow the use of the deep learning technique to improve the quality of the images obtained with this type of tomographic systems.Downloads
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