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Probability Distributions for Diffusive Light 漫射光的概率分布
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1996.trit80
E. Kogan, M. Kaveh
{"title":"Probability Distributions for Diffusive Light","authors":"E. Kogan, M. Kaveh","doi":"10.1364/aoipm.1996.trit80","DOIUrl":"https://doi.org/10.1364/aoipm.1996.trit80","url":null,"abstract":"Statistical properties of coherent radiation propagating in a quasi-ID random media is studied in the framework of random matrix theory. Distribution functions for the total transmission coefficient and the angular transmission coefficient are obtained.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121447746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Imaging of Turbid Media with a Spatial Filter 用空间滤波器成像浑浊介质
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1994.dcwi.288
Lihong V. Wang, A. Hielscher, S. Jacques, D. V. Stephens, F. Tittel
{"title":"Imaging of Turbid Media with a Spatial Filter","authors":"Lihong V. Wang, A. Hielscher, S. Jacques, D. V. Stephens, F. Tittel","doi":"10.1364/aoipm.1994.dcwi.288","DOIUrl":"https://doi.org/10.1364/aoipm.1994.dcwi.288","url":null,"abstract":"A buried object inside a turbid medium was imaged using a continuous-wave laser of 5-mW output power and a spatial filter. The spatial filter consists of a lens of 4-cm focal length and a pinhole of 10-μm diameter. A lock-in amplifier was used to reduce the noise. An absorbing rod of 2-mm diameter was buried in the center of a 5-cm thick cuvette filled with polystyrene spheres solution. The object was detected with a contrast of 99% when the turbid medium was 20 mean free path thick, and 10% when 30 mean free path thick.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123419910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Imaging Laser-Heated Cutaneous Chromophores 激光加热皮肤发色团成像
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1994.opttm.269
T. Milner, B. Anvari, J. S. Nelson, B. S. Tanenbaum, L. O. Svaasand
{"title":"Imaging Laser-Heated Cutaneous Chromophores","authors":"T. Milner, B. Anvari, J. S. Nelson, B. S. Tanenbaum, L. O. Svaasand","doi":"10.1364/aoipm.1994.opttm.269","DOIUrl":"https://doi.org/10.1364/aoipm.1994.opttm.269","url":null,"abstract":"Time-resolved infrared images are used to form tomographic reconstructions of laser-heated cutaneous chromophores. In-vitro and in-vivo experiments are reported and discussed.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125108086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diffusive Emission Tomography 扩散发射层析成像
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1996.mt145
J. Schotland, Masaru Ishii
{"title":"Diffusive Emission Tomography","authors":"J. Schotland, Masaru Ishii","doi":"10.1364/aoipm.1996.mt145","DOIUrl":"https://doi.org/10.1364/aoipm.1996.mt145","url":null,"abstract":"We consider the problem of emission tomography in a highly-scattering medium probed by diffusing waves. An analytic solution to the image reconstruction problem is presented.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125248383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling the Wavelength Dependence of the Early Arriving Fraction of a Short Optical Pulse Transmitted Through a Highly Scattering Medium 通过高散射介质传输的短光脉冲早期到达部分波长依赖性的建模
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1996.trit87
C. Penney, D. Pattanayak, W. Lotshaw
{"title":"Modeling the Wavelength Dependence of the Early Arriving Fraction of a Short Optical Pulse Transmitted Through a Highly Scattering Medium","authors":"C. Penney, D. Pattanayak, W. Lotshaw","doi":"10.1364/aoipm.1996.trit87","DOIUrl":"https://doi.org/10.1364/aoipm.1996.trit87","url":null,"abstract":"The wavelength dependence of light transport parameters of human tissue are estimated using Mie calculations of scattering from a simple model of a distribution of single sized spherical scatterers in an otherwise homogeneous background medium. The results are consistent with a dominant contribution to tissue scattering from small cellular or intercellular constituents such as mitochondria. The early arriving transmitted fraction of short optical pulses is calculated using both a diffusion approximation, and a Monte Carlo solution of the transport problem. Both predict enhancement of this transmission as the incident wavelength is changed from 700 nm to 1300 nm. However, the Monte Carlo solution predicts a much larger enhancement, showing strong disagreement with the diffusion result for early arriving photons at all tissue depths greater than a few millimeters.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127827957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Resolution of Time Resolved Breast Transillumination 时间分辨乳房透视的分辨率
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1994.trbsdi.134
E. D. de Haller, C. Depeursinge
{"title":"Resolution of Time Resolved Breast Transillumination","authors":"E. D. de Haller, C. Depeursinge","doi":"10.1364/aoipm.1994.trbsdi.134","DOIUrl":"https://doi.org/10.1364/aoipm.1994.trbsdi.134","url":null,"abstract":"The resolution of the time resolved breast transillumination has been investigated both theoretically and experimentally. The resolution limit is associated to the size of the smallest object visible on an image or image quality index which depends on the image parameters as the transfer function, the contrast and the noise, and it has been determined on Monte-Carlo simulation results as well as in vitro measurements on breast samples. The noise, both photonic and anatomical has been found as a limitating factor of the resolution.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114398271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Flow Properties of Heterogeneous Turbid Media Probed by Diffusing Temporal Correlation 用扩散时间相关性研究非均匀浑浊介质的流动特性
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1996.mt175
D. Boas, I. Meglinsky, L. Zemany, L. Campbell, B. Chance, A. Yodh
{"title":"Flow Properties of Heterogeneous Turbid Media Probed by Diffusing Temporal Correlation","authors":"D. Boas, I. Meglinsky, L. Zemany, L. Campbell, B. Chance, A. Yodh","doi":"10.1364/aoipm.1996.mt175","DOIUrl":"https://doi.org/10.1364/aoipm.1996.mt175","url":null,"abstract":"Variations in the amplitude and phase of diffuse photon density waves is known to yield important information about the structural properties of turbid media, such as the scattering and absorption coefficients. Information on the dynamical properties of turbid media may be obtained from the temporal fluctuations of light fields emanating from the media. In this contribution, we demonstrate that variations in temporal correlation functions of the temporal intensity fluctuations of different speckles of light can be used to derive information about the spatially varying dynamical properties of turbid media. We first present a diffusion for the temporal correlation function for systems where the dynamics are governed by Brownian motion and shear and random flow. We demonstrate the validity of the correlation diffusion for heterogeneous systems by comparing the theoretical results with experimental results for systems governed by different dynamical processes, e.g. flow. As an illustration of the usefulness of this correlation technique to biomedical optics, we discuss the application of this technique to diagnosing the thickness of burned tissue. The correlation diffusion is an important, unique tool for analyzing the complex dynamical signals that arise from heterogeneous biological systems.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127925331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Accurate Analysis of Coherent Backscattering Revealing Recurrent Scattering of Light in Disordered Media 揭示无序介质中光的重复散射的相干后向散射的精确分析
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1994.wpl.53
D. Wiersma, M. P. V. Albada, A. Lagendijk
{"title":"Accurate Analysis of Coherent Backscattering Revealing Recurrent Scattering of Light in Disordered Media","authors":"D. Wiersma, M. P. V. Albada, A. Lagendijk","doi":"10.1364/aoipm.1994.wpl.53","DOIUrl":"https://doi.org/10.1364/aoipm.1994.wpl.53","url":null,"abstract":"Weak localization or coherent backscattering is a general effect for waves scattered by a disordered medium. It is an interference effect that survives over length scales much larger than the mean free path, and arises from the time reversal symmetry of the wavelets scattered in the backscattering direction. In the exact backscattering direction, counter propagating wavelets will interfere constructively, while sufficiently far away from this direction phase differences wash out the interference effect. The result is a cone of enhanced backscattering which has a width of the order of λ/ℓ, where λ is the wavelength and ℓ is the (transport) mean free path.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133527029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Destruction of Optical Coherent Backscattering by Magnetic Faraday Rotation 磁法拉第旋转对光相干后向散射的破坏
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1994.wpl.16
R. Lenke, G. Maret
{"title":"Destruction of Optical Coherent Backscattering by Magnetic Faraday Rotation","authors":"R. Lenke, G. Maret","doi":"10.1364/aoipm.1994.wpl.16","DOIUrl":"https://doi.org/10.1364/aoipm.1994.wpl.16","url":null,"abstract":"Measurements of optical coherent backscattering cones from magneto-optically active multiple scattering media in magnetic fields up to 23 T are reported. The observed field induced lowering of the backscattering enhancement and change of the cone shape compare well with a realistic simple model.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134081568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reconstructing absorber images in a three-dimensional scattering medium by using photon-path data 利用光子路径数据重建三维散射介质中的吸收体图像
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1996.ria299
A. Maki, H. Koizumi
{"title":"Reconstructing absorber images in a three-dimensional scattering medium by using photon-path data","authors":"A. Maki, H. Koizumi","doi":"10.1364/aoipm.1996.ria299","DOIUrl":"https://doi.org/10.1364/aoipm.1996.ria299","url":null,"abstract":"The proposed averaged photon-path imaging (APPI) method uses Monte Carlo data to reconstruct the images being scanned by optical tomography. To confirm its effectiveness, simulated continuous-wave measurements of one or two absorbers located in a cubic scattering medium were performed. The three-dimensional locations of the absorbers were accurately reconstructed using the APPI method. Combining time-resolved measurement with the APPI method improved the accuracy of the reconstructed images. The APPI method can thus be applied to various measuring situation for practical image reconstruction.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132975614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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