Coherent detection imaging of absorption and scattering in tissues and tissuelike phantoms

Kin Pui Chan; Makoto Yamada; Balasigamani Devaraj; Keisuke Fukuchi; Humio Inaba

doi:10.1117/12.228673

18 December 1995 Coherent detection imaging of absorption and scattering in tissues and tissuelike phantoms

Kin Pui Chan, Makoto Yamada, Balasigamani Devaraj, Keisuke Fukuchi, Humio Inaba

Proceedings Volume 2626, Photon Propagation in Tissues; (1995) https://doi.org/10.1117/12.228673
Event: BiOS Europe '95, 1995, Barcelona, Spain

Abstract

This paper presents measurement results of absorption and scattering in tissues and tissuelike phantoms by using coherent detection imaging (CDI) technique. CDI measurements are carried out in 0.8 - 1.3 micrometer wavelength region by using several continuous wave, single frequency lasers, including a tunable Ti:sapphire laser and laser diode-pumped Nd:YAG lasers. A 120 dB dynamic range achieved with less than 10 mW incident power and a detection time of 0.1 msec enables spectroscopic measurements through attenuation of as much as exp(-27). Measurement results using cw lasers are also compared to the temporal scattering profiles of coherent photon migration in highly scattering media. For this purpose, a modified CDI system using low-coherence super luminescent diodes has been developed. The results from the laser and low coherence CDI measurements are found to be consistent.

Citation Download Citation

Kin Pui Chan, Makoto Yamada, Balasigamani Devaraj, Keisuke Fukuchi, and Humio Inaba "Coherent detection imaging of absorption and scattering in tissues and tissuelike phantoms", Proc. SPIE 2626, Photon Propagation in Tissues, (18 December 1995); https://doi.org/10.1117/12.228673

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