Improving the Accuracy of the Diffusion Model in Highly Absorbing Media
The diffusion approximation of the Boltzmann transport equation is most commonly used for describing the photon propagation in turbid media. It produces satisfactory results in weakly absorbing and highly scattering media, but the accuracy lessens with the decreasing albedo. In this paper, we presen...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2007-01-01
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| Series: | International Journal of Biomedical Imaging |
| Online Access: | http://dx.doi.org/10.1155/2007/38168 |
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| _version_ | 1832563556603658240 |
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| author | Alexander X. Cong Haiou Shen Wenxiang Cong Ge Wang |
| author_facet | Alexander X. Cong Haiou Shen Wenxiang Cong Ge Wang |
| author_sort | Alexander X. Cong |
| collection | DOAJ |
| description | The diffusion approximation of the Boltzmann transport equation is most commonly used for describing the photon propagation in turbid media. It produces satisfactory results in weakly absorbing and highly scattering media, but the accuracy lessens with the decreasing albedo. In this paper, we presented a method to improve the accuracy of the diffusion model in strongly absorbing media by adjusting the optical parameters. Genetic algorithm-based optimization tool is used to find the optimal optical parameters. The diffusion model behaves more closely to the physical model with the actual optical parameters substituted by the optimized optical parameters. The effectiveness of the proposed technique was demonstrated by the numerical experiments using the Monte Carlo
simulation data as measurements. |
| format | Article |
| id | doaj-art-5673cc32655e477dab6b8b087315f808 |
| institution | Kabale University |
| issn | 1687-4188 1687-4196 |
| language | English |
| publishDate | 2007-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Biomedical Imaging |
| spelling | doaj-art-5673cc32655e477dab6b8b087315f8082025-02-03T01:13:08ZengWileyInternational Journal of Biomedical Imaging1687-41881687-41962007-01-01200710.1155/2007/3816838168Improving the Accuracy of the Diffusion Model in Highly Absorbing MediaAlexander X. Cong0Haiou Shen1Wenxiang Cong2Ge Wang3Biomedical Imaging Division, School of Biomedical Engineering and Sciences, Virginia Polytechnic Institute and State University, 1880 Pratt Drive, Blacksburg, VA 24061, USABiomedical Imaging Division, School of Biomedical Engineering and Sciences, Virginia Polytechnic Institute and State University, 1880 Pratt Drive, Blacksburg, VA 24061, USABiomedical Imaging Division, School of Biomedical Engineering and Sciences, Virginia Polytechnic Institute and State University, 1880 Pratt Drive, Blacksburg, VA 24061, USABiomedical Imaging Division, School of Biomedical Engineering and Sciences, Virginia Polytechnic Institute and State University, 1880 Pratt Drive, Blacksburg, VA 24061, USAThe diffusion approximation of the Boltzmann transport equation is most commonly used for describing the photon propagation in turbid media. It produces satisfactory results in weakly absorbing and highly scattering media, but the accuracy lessens with the decreasing albedo. In this paper, we presented a method to improve the accuracy of the diffusion model in strongly absorbing media by adjusting the optical parameters. Genetic algorithm-based optimization tool is used to find the optimal optical parameters. The diffusion model behaves more closely to the physical model with the actual optical parameters substituted by the optimized optical parameters. The effectiveness of the proposed technique was demonstrated by the numerical experiments using the Monte Carlo simulation data as measurements.http://dx.doi.org/10.1155/2007/38168 |
| spellingShingle | Alexander X. Cong Haiou Shen Wenxiang Cong Ge Wang Improving the Accuracy of the Diffusion Model in Highly Absorbing Media International Journal of Biomedical Imaging |
| title | Improving the Accuracy of the Diffusion Model in Highly Absorbing Media |
| title_full | Improving the Accuracy of the Diffusion Model in Highly Absorbing Media |
| title_fullStr | Improving the Accuracy of the Diffusion Model in Highly Absorbing Media |
| title_full_unstemmed | Improving the Accuracy of the Diffusion Model in Highly Absorbing Media |
| title_short | Improving the Accuracy of the Diffusion Model in Highly Absorbing Media |
| title_sort | improving the accuracy of the diffusion model in highly absorbing media |
| url | http://dx.doi.org/10.1155/2007/38168 |
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