Understanding of light propagation inside human heads and improvement of optical mapping images based on the radiative transfer

为了改进利用近红外光对脑功能进行无创成像的光学成像技术，在分析光在头部传播的基础上进行了数值模拟和幻象实验。研究了脑脊液层、眼球、额窦等非散射组织对成像的影响。此外，还研究了位于脑表面的厚血管的影响。研究结果将有助于更好地理解测绘图像，提高测绘图像的质量。

For the purpose of the improvement of optical mapping technology which images brain functions noninvasively using near-infrared light, numerical simulations based on the analysis of light propagation in heads and phantom experiments were conducted. The effects of the non-scattering tissues such as the cerebrospinal fluid layer, eye ball and frontal sinus on the mapping images were investigated. Also the effects of the thick blood vessels lying at the brain surface were investigated. The results will contribute to better understanding of the mapping images and to improvement of the quality of the mapping images.