Diffuse optical tomography setup using a nanosecond laser

Meghdoot Mozumder; Jarkko Leskinen; Tanja Tarvainen

doi:10.1117/12.2670651

9 August 2023 Diffuse optical tomography setup using a nanosecond laser

Meghdoot Mozumder, Jarkko Leskinen, Tanja Tarvainen

Proceedings Volume 12628, Diffuse Optical Spectroscopy and Imaging IX; 1262820 (2023) https://doi.org/10.1117/12.2670651
Event: European Conferences on Biomedical Optics, 2023, Munich, Germany

Abstract

Time-domain diffuse optical tomography (TD-DOT) systems use pulsed lasers and measure time-varying temporal point spread function to estimate spatially varying optical parameters in biological tissues. Generally, the TD-DOT systems have been based on picosecond light sources and measurements were performed using photon counting methods or time-gated detectors. In this work, we demonstrate the feasibility of TD-DOT using a nanosecond laser source and measurements using a standard digital oscilloscope. For this, we constructed a prototype TD-DOT experimental system utilising a high-energy nanosecond Nd:YAG laser combined with a high-bandwidth oscilloscope. The system was used to image an optical phantom. The experiment verified that both absorbing and scattering objects can be simultaneously reconstructed with nanosecond TD-DOT.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Meghdoot Mozumder, Jarkko Leskinen, and Tanja Tarvainen "Diffuse optical tomography setup using a nanosecond laser", Proc. SPIE 12628, Diffuse Optical Spectroscopy and Imaging IX, 1262820 (9 August 2023); https://doi.org/10.1117/12.2670651

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