Abstract
The physical foundation of imaging through tissue is light scattering by small particles because a tissue medium is a diffusing turbid medium that consists of many scatterers such as cells and nuclei. A light beam incident upon a tissue-like turbid medium can be multiply scattered by small particles. As a result, methods for investigating the light-tissue interaction process and the performance of imaging systems such as an optical microscope are different from those based on Fourier optics (Born and Wolf, Principles of optics, 1980; Goodman, Introduction to fourier optics, 1968; Gu, Advanced optical imaging theory, 2000; Wilson and Sheppard, Theory and practice of scanning optical microscopy, 1984; Gu, Principles of three-dimensional imaging in confocal microscopes, 1996). In this introductory chapter, we first describe the physical property of a scattered light beam in Sect. 1.1. In Sect. 1.2, a particular method for investigating light-tissue interaction, called Monte Carlo simulation, is briefly introduced. The main issues related to microscopic imaging through turbid media are summarized in Sect. 1.3. Section 1.4 discusses the two aspects of microscopic imaging through turbid media, the direct and inversed approaches. Finally, the structure of this book is outlined in Sect. 1.5.
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Gu, M., Gan, X., Deng, X. (2015). Introduction. In: Microscopic Imaging Through Turbid Media. Biological and Medical Physics, Biomedical Engineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-46397-0_1
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