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Light Scattering Angular Correlation of Spherical Droplets Containing Inclusions 含夹杂球形液滴的光散射角相关
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1996.pmst45
G. Videen, P. Pellegrino, D. Ngo, R. Pinnick, P. Nachman
{"title":"Light Scattering Angular Correlation of Spherical Droplets Containing Inclusions","authors":"G. Videen, P. Pellegrino, D. Ngo, R. Pinnick, P. Nachman","doi":"10.1364/aoipm.1996.pmst45","DOIUrl":"https://doi.org/10.1364/aoipm.1996.pmst45","url":null,"abstract":"Micrometer-size glycerol droplets containing spherical latex inclusions are levitated in an electrodynamic trap. The scattering phase functions of such particles undergo random fluctuations with time. We measure the intensities at two (near-forward and near-backward) scattering angles and find them to have strong positive correlations during some time periods and strong negative correlations during other time periods. Characteristic time constants of the correlations are on the order of seconds. We compare our experimental results with correlations predicted by two simple scattering models and suggest that these correlation changes are associated with the diffusion of inclusions within the host droplet, rather than interference effects between the inclusions.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"52 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":"124603234","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
Achievable Image Resolution Using Non-Diffuse, Multiply Scattered Light 可实现的图像分辨率使用非漫射，多重散射光
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1994.trbsdi.149
J. A. Moon, J. Reintjes
{"title":"Achievable Image Resolution Using Non-Diffuse, Multiply Scattered Light","authors":"J. A. Moon, J. Reintjes","doi":"10.1364/aoipm.1994.trbsdi.149","DOIUrl":"https://doi.org/10.1364/aoipm.1994.trbsdi.149","url":null,"abstract":"Starting from the integral formulation of radiative transfer theory, we present a calculation of the intensity and direction of light traversing a multiply scattering medium in the isotropic scattering case for pulsed point source illumination. From these calculations we examine the point-spread-function as a function of detector integration time and sample thickness when the diffusion approximation is not valid. We show that image resolution better than the diffusion limit is theoretically possible using multiply scattered light for samples thinner than about 35 scattering lengths. Monte Carlo simulations are used to extend these results to the anisotropic scattering case.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"11 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":"121066726","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
Controllable Transparencies and Object Image Reconstruction by Its Fourier-Spectrum at the Stimulated Scatterings of Light 受激散射光的可控透明度及其傅立叶谱重建
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1994.ncpdir.202
N. V. Tcherniega, A. Kudryavtseva, A. I. Sokolovskaya, S. Er-rhaimini, N. P. Xuan, G. Rivoire
{"title":"Controllable Transparencies and Object Image Reconstruction by Its Fourier-Spectrum at the Stimulated Scatterings of Light","authors":"N. V. Tcherniega, A. Kudryavtseva, A. I. Sokolovskaya, S. Er-rhaimini, N. P. Xuan, G. Rivoire","doi":"10.1364/aoipm.1994.ncpdir.202","DOIUrl":"https://doi.org/10.1364/aoipm.1994.ncpdir.202","url":null,"abstract":"Object image reconstruction by its Fourier-spectrum has been obtained in the beams of backward stimulated scattering. Dependence of the reconstruction quality and conversion efficiency into scattered light on the geometry conditions of excitation has been investigated.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"7 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120854137","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
Three-Dimensional Tumor Localization in Thick Tissue Using Measurements in a Plane 利用平面测量在厚组织中进行三维肿瘤定位
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1996.mt179
C. Matson, N. Clark, L. McMackin, J. Fender
{"title":"Three-Dimensional Tumor Localization in Thick Tissue Using Measurements in a Plane","authors":"C. Matson, N. Clark, L. McMackin, J. Fender","doi":"10.1364/aoipm.1996.mt179","DOIUrl":"https://doi.org/10.1364/aoipm.1996.mt179","url":null,"abstract":"Diffuse photon density waves are used to provide three-dimensional tumor localization in thick tissue using a single set of measurements in a plane. Lateral localization occurs in the detection plane, while a Fourier optics approach is used to backpropagate the wave throughout the tissue volume for depth localization. Computer simulation results are presented which validate the technique.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"1 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":"130448321","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
Spatial Frequency Imaging Through Random Scattering Media 随机散射介质的空间频率成像
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1994.dcwi.284
J. Dolne, K. Yoo, F. Liu, R. Alfano
{"title":"Spatial Frequency Imaging Through Random Scattering Media","authors":"J. Dolne, K. Yoo, F. Liu, R. Alfano","doi":"10.1364/aoipm.1994.dcwi.284","DOIUrl":"https://doi.org/10.1364/aoipm.1994.dcwi.284","url":null,"abstract":"Shadow images of objects hidden behind random intralipid solutions were significantly improved using a Fourier spatial filter system and NIR laser wavelengths of 670 nm, 830 nm, and 1300 nm in the therapeutic window. The decrease in scattering and the increase in absorption of these media were found to improve the image quality at longer wavelengths.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"36 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":"133744345","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
Snake Photon Imaging in Thick Tissues in Visible and Near Infrared Radiation Spectral Region 蛇光子在厚组织可见光和近红外辐射光谱区的成像
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1994.trbsdi.166
B. Das, K. Yoo, R. Alfano
{"title":"Snake Photon Imaging in Thick Tissues in Visible and Near Infrared Radiation Spectral Region","authors":"B. Das, K. Yoo, R. Alfano","doi":"10.1364/aoipm.1994.trbsdi.166","DOIUrl":"https://doi.org/10.1364/aoipm.1994.trbsdi.166","url":null,"abstract":"Time-resolved transillumination techniques have been used to image opaque1-6 and partially absorbing7-10 objects hidden in various random media. When ultrashort laser pulses are incident on a slab of scattering medium the transmitted pulses consist of a ballistic (coherent) component11-12, a diffuse component and a snake component1. Using time-resolved detection techniques, the snake photons can be separated from the diffuse component and used to construct the image of an object hidden in a scattering medium with different optical properties. Recently, it has been shown that thick tissue imaging is possible using snake photons in the visible region10.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"31 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":"134105911","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
Spatial Resolution in Time-Gated Transillumination of Turbid Media 浑浊介质时间门控透照的空间分辨率
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1994.trbsdi.143
D. G. Papaioannou, G. '. 't Hooft
{"title":"Spatial Resolution in Time-Gated Transillumination of Turbid Media","authors":"D. G. Papaioannou, G. '. 't Hooft","doi":"10.1364/aoipm.1994.trbsdi.143","DOIUrl":"https://doi.org/10.1364/aoipm.1994.trbsdi.143","url":null,"abstract":"The performance of two different time-resolved transillumination approaches applied to turbid media is compared on the basis of the resulting spatial resolution; a photon counting set-up with a time resolution of 35 ps, and a streak camera arrangement with a 6 ps time resolution. In the case of a substantial relative amount of unscattered light, it is found that small detection angles improve spatial resolution irrespective of temporal resolution. For large concentration of scatterers and large sample thicknesses, i.e. when the amount of unscattered light is negligible, it is observed that the spatial resolution is improved by increasing the time resolution. Moreover, the time gate position corresponding to best spatial resolution is found to be at later times than the minimum transit time.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"87 3 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":"130537545","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
Microscopy through Scattering Media 散射介质显微镜
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1994.dcwi.291
M. Kempe, A. Thon, W. Rudolph
{"title":"Microscopy through Scattering Media","authors":"M. Kempe, A. Thon, W. Rudolph","doi":"10.1364/aoipm.1994.dcwi.291","DOIUrl":"https://doi.org/10.1364/aoipm.1994.dcwi.291","url":null,"abstract":"The combination of confocal microscopy and coherent broad-band illumination is shown to enable imaging with micrometer resolution through scattering media with potential applications in biology and medicine. A linear and a nonlinear correlation technique based on the detection of interference and second harmonic generation, respectively, which provide a time gate and a k-space filter are discussed. Experimental and theoretical investigations are presented describing fundamental limits of this imaging technique.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"13 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":"114990422","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
Practical Limits for the Detection and Characterization of Optical Inhomogeneities using Diffuse Photon Density Waves 利用漫射光子密度波检测和表征光学不均匀性的实际限制
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1996.mt142
D. Boas, M. A. O'Leary, B. Chance, A. Yodh
{"title":"Practical Limits for the Detection and Characterization of Optical Inhomogeneities using Diffuse Photon Density Waves","authors":"D. Boas, M. A. O'Leary, B. Chance, A. Yodh","doi":"10.1364/aoipm.1996.mt142","DOIUrl":"https://doi.org/10.1364/aoipm.1996.mt142","url":null,"abstract":"Diffusing photons can provide information about the spatially dependent optical properties of turbid media. In biological tissues these optical properties may be correlated to physiological parameters, enabling one to effectively probe the physiological states of tissue for abnormalities such as tumors and hemorrhages. In this paper, we show that positional uncertainty in the source and detector lead to significant random errors which degrade the optical information available from diffusing photons. We investigate the limits for the detection, localization, and characterization of optical inhomogeneities using diffusing photons as a probe. While detection is sufficient for tumor screening, full characterization of the optical properties is desirable for specification of the tumor. Our findings in model breast systems with realistic signal-to-noise indicate tumors as small as 0.3 cm in diameter can be unambiguously detected and located; however the size and optical properties of the tumor can only be simultaneously determined if the diameter is of the order of 1.0 cm. On the other hand if a priori information is available then the optical properties (size) of tumors as small as 0.3 cm in diameter can be determined.","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":"115652212","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
High Resolution IntraArterial Imaging with Optical Coherence Tomography 高分辨率动脉内光学相干断层成像
Advances in Optical Imaging and Photon Migration Pub Date : 1900-01-01 DOI: 10.1364/aoipm.1996.cit200
M. Brezinski, Neil A. Weissman, G. Tearney, S. Boppart, B. Bouma, E. Swanson, J. Fujimoto, J. Southern
{"title":"High Resolution IntraArterial Imaging with Optical Coherence Tomography","authors":"M. Brezinski, Neil A. Weissman, G. Tearney, S. Boppart, B. Bouma, E. Swanson, J. Fujimoto, J. Southern","doi":"10.1364/aoipm.1996.cit200","DOIUrl":"https://doi.org/10.1364/aoipm.1996.cit200","url":null,"abstract":"Current cardiovascular imaging technologies lack the resolution to accurately identify patients at high risk for acute myocardial infarction and sudden death. This study assesses the feasibility of a recently developed imaging technology, optical coherence tomography(OCT), to provide high resolution imaging of coronary microstructure. Imaging of in vitro human tissue was performed, demonstrating its ability to identify high risk coronary plaques. Its performance was also directly compared with high frequency ultrasound (IVUS), the current clinical technology with the highest resolution. The 16 micron axial resolution of OCT allowed a far superior analysis of plaque microstructure compared with the 110 micron resolution of IVUS. OCT represents an attractive technology for high resolution intravascular imaging due to its high resolution, high contrast, and ability to be integrated with intravascular catheters.","PeriodicalId":368664,"journal":{"name":"Advances in Optical Imaging and Photon Migration","volume":"29 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":"124114255","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
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