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27 November 2001 Some ideas from medical imaging applied to the detection of landmines
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Diffusive optical tomography provides a technique for imaging the human body using modulated laser light. The modulation of the light allows measurement of the amplitude and phase of the modulation, which improves the spatial resolution over that which could be obtained with unmodulated light. Diffusive optical tomography is normally described by a diffusion equation for photon density. An alternative description considers the propagation of an optical carrier and two sidebands, and the diffusive wave is the mathematical result of the slight differences among the carrier and sidebands, the result being described as a wave at the difference frequency. This suggested that the use of multiple, closely spaced frequencies might be advantageous in other subsurface imaging. Here we discuss an application to landmine detection under a rough surface.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tianchen Shi, Carey M. Rappaport, Gerhard O. Sauermann, and Charles A. DiMarzio "Some ideas from medical imaging applied to the detection of landmines", Proc. SPIE 4491, Subsurface and Surface Sensing Technologies and Applications III, (27 November 2001);

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