Comparison of diffusion approximation and higher order diffusion equations for optical tomography of osteoarthritis.
Comparison of diffusion approximation and higher order diffusion equations for optical tomography of osteoarthritis.
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DOI：
10.1117/1.3233655
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发表时间：
2009-09
影响因子：
3.5
通讯作者：
Zhen Yuan;Qizhi Zhang;E. Sobel;Huabei Jiang
中科院分区：
文献类型：
--
作者：
Zhen Yuan;Qizhi Zhang;E. Sobel;Huabei Jiang
In this study, a simplified spherical harmonics approximated higher order diffusion model is employed for 3-D diffuse optical tomography of osteoarthritis in the finger joints. We find that the use of a higher-order diffusion model in a stand-alone framework provides significant improvement in reconstruction accuracy over the diffusion approximation model. However, we also find that this is not the case in the image-guided setting when spatial prior knowledge from x-rays is incorporated. The results show that the reconstruction error between these two models is about 15 and 4%, respectively, for stand-alone and image-guided frameworks.
