Three-element phased-array approach to improve the spatial resolution in diffuse optical imaging

N. Liu; A. Sassaroli; M. A. Zucker; S. Fantini

doi:10.1117/12.634819

22 June 2005 Three-element phased-array approach to improve the spatial resolution in diffuse optical imaging (Invited Paper)

N. Liu, A. Sassaroli, M. A. Zucker, S. Fantini

Author Affiliations +

Proceedings Volume 5771, Saratov Fall Meeting 2004: Optical Technologies in Biophysics and Medicine VI; (2005) https://doi.org/10.1117/12.634819
Event: Saratov, Russia, 2004, Saratov, Russian Federation

Abstract

A three-element phased array approach based on post processing of continuous wave data for enhancing the spatial resolution of highly scattering media is presented. The method is based on the scanning of a three sources -one detector array along the system under investigation. The sources are turned on and offin a sequential mode in order to avoid cross talk among them. At each position of the sources-detector system along the medium intensity data are collected from the sources, multiplied by amplitude and phase factors, and combined in a phased-array algorithm. Optimal choices of the amplitude and phase factors are discussed. Experimental and theoretical evidence of the improved spatial resolution obtained with this method is provided.

Citation Download Citation

N. Liu, A. Sassaroli, M. A. Zucker, and S. Fantini "Three-element phased-array approach to improve the spatial resolution in diffuse optical imaging (Invited Paper)", Proc. SPIE 5771, Saratov Fall Meeting 2004: Optical Technologies in Biophysics and Medicine VI, (22 June 2005); https://doi.org/10.1117/12.634819

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