Monte Carlo investigation of separation of two absorbers in topographic image

Takuma Kadoya; Eizo Moriwaki; Eiji Okada

doi:10.1117/12.447418

2 November 2001 Monte Carlo investigation of separation of two absorbers in topographic image

Takuma Kadoya, Eizo Moriwaki, Eiji Okada

Proceedings Volume 4431, Photon Migration, Optical Coherence Tomography, and Microscopy; (2001) https://doi.org/10.1117/12.447418
Event: European Conferences on Biomedical Optics, 2001, Munich, Germany

Abstract

Near infrared topographic imaging is an effective instrument to image brain-cortex activity. The image is reconstructed by changes in light intensity detected with multi-channel source-detector pairs. However, light scattering in tissue prevents us from improving the spatial resolution of the reconstructed image, hence it is important to evaluate the effect of scattering on the spatial resolution of the reconstructed image. In this study, separation of two absorbers in topographic image is investigated by Monte Carlo simulation to evaluate the spatial resolution of topographic imaging. Because of heterogeneity of tissue, especially presence of low scattering CSF layer affects the light propagation in the adult brain. The adult head model consists of three layers including a low scattering medium. In case where the separation of two absorbers is greater than the distance between adjacent measurment points, the two absorbers can be separated in the topographic image.

Citation Download Citation

Takuma Kadoya, Eizo Moriwaki, and Eiji Okada "Monte Carlo investigation of separation of two absorbers in topographic image", Proc. SPIE 4431, Photon Migration, Optical Coherence Tomography, and Microscopy, (2 November 2001); https://doi.org/10.1117/12.447418

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KEYWORDS

Monte Carlo methods

Light scattering

Spatial resolution

Scattering

Lithium

Tissue optics

Electrical engineering

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