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中文摘要：
针对近红外漫射光层析成像中的三维成像问题展开了理论和实验研究．利用开发的以强度和平均飞行时间作为数据类型的三维重建算法对数值仿真模型进行了重建，同时采用多通道时间相关单光子计数层析成像系统对固体样品进行了三维成像．结果表明：所发展的算法较忠实地重建出了样品内部的异质体结构；采用的差分重建方法有利于提高重建的抗噪性能；提出的单层测头配置模式对于三维成像具有实际意义．
英文摘要：
The three dimensional image reconstruction for near infrared diffuse optical tomography based on time-resolved measurement is studied. The reconstruction algorithm developed and the single plane measurement mode was evaluated on two simulated cylindrical models with two and three inclusions, respectively,and a solid phantom measured using a multichannel time-resolved single photon counting optical tomographic system. Reconstructed images show that the image reconstruction algorithm revealed the distribution of the heterogeneities, differential imaging method is in favor of the image reconstruction from noisy experimental data, and one plane measurement mode has great significance for 3-D optical tomography in clinical application.
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