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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-21 21:06 |
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Conference: Bucharest University Faculty of Physics 2008 Meeting
Section: Optics, Spectroscopy, Plasma and Lasers
Title:
DIFFUSE OPTICAL TOMOGRAPHY (DOT) WITH SERIAL APPROACH
Authors:
D. C. Dumitras, D. C. Dutu, C. Matei, A. M. Magureanu, M. Patachia
Affiliation:
Department of Lasers, National Institute for Laser, Plasma and Radiation Physics,
409 Atomistilor St., PO Box MG-36, 077125 Bucharest-Magurele, Romania
E-mail
miky_2283@yahoo.com
Keywords:
diffuse optical tomography
Abstract:
Diffuse optical tomography (DOT) can image spatial variations in highly scattering optical media. Using a double serial approach for laser illumination and light detection, we built an inexpensive continuous-wave DOT system with a minimal number of components, namely: 2 laser diode sources (at 785 nm and 830 nm), one PC, an acquisition board, two high precision translation tables, one SiPD detector, a transimpedance amplifier and two lock-in amplifiers, which can acquire 128 independent measurements in less than 6 seconds. For a higher resolution in tissue reconstruction, the number of the optical fibres in the measuring head can be increased at the expense of a higher acquisition time.
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