Karthik Vishwanath, Ph.D. - Publications

Affiliations: 
2005 University of Michigan, Ann Arbor, Ann Arbor, MI 
Area:
Optics Physics, Biomedical Engineering

52 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2022 Helton M, Rajasekhar S, Zerafa S, Vishwanath K, Mycek MA. Numerical approach to quantify depth-dependent blood flow changes in real-time using the diffusion equation with continuous-wave and time-domain diffuse correlation spectroscopy. Biomedical Optics Express. 14: 367-384. PMID 36698680 DOI: 10.1364/BOE.469419  0.668
2022 Helton M, Zerafa S, Vishwanath K, Mycek MA. Efficient computation of the steady-state and time-domain solutions of the photon diffusion equation in layered turbid media. Scientific Reports. 12: 18979. PMID 36347893 DOI: 10.1038/s41598-022-22649-4  0.698
2022 Helton M, Mycek MA, Vishwanath K. Reconstruction of optical coefficients in turbid media using time-resolved reflectance and calibration-free instrument response functions. Biomedical Optics Express. 13: 1595-1608. PMID 35414997 DOI: 10.1364/BOE.447685  0.662
2022 Vincely VD, Vishwanath K. Accuracy of retrieving optical properties from liquid tissue phantoms using a single integrating sphere. Applied Optics. 61: 375-385. PMID 35200872 DOI: 10.1364/AO.443854  0.321
2020 Helton M, Mycek MA, Vishwanath K. Direct estimation of the reduced scattering coefficient from experimentally measured time-resolved reflectance via Monte Carlo based lookup tables. Biomedical Optics Express. 11: 4366-4378. PMID 32923049 DOI: 10.1364/Boe.398256  0.696
2019 Vishwanath K, Zanfardino S. Diffuse Correlation Spectroscopy at Short Source-Detector Separations: Simulations, Experiments and Theoretical Modeling Applied Sciences. 9: 3047. DOI: 10.3390/App9153047  0.364
2018 Vishwanath K, Gurjar R, Wolf D, Riccardi S, Duggan M, King D. Diffuse optical monitoring of peripheral tissues during uncontrolled internal hemorrhage in a porcine model. Biomedical Optics Express. 9: 569-580. PMID 29552394 DOI: 10.1364/Boe.9.000569  0.457
2017 Pakela JM, Hedrick TL, Lee SY, Vishwanath K, Zanfardino S, Chung YG, Helton MC, Kolodziejski NJ, Stapels CJ, McAdams DR, Fernandez DE, Christian JF, Feinberg SE, Mycek MA. Design verification of a compact system for detecting tissue perfusion using bimodal diffuse optical technologies. Proceedings of Spie--the International Society For Optical Engineering. 10072. PMID 29755163 DOI: 10.1117/12.2252811  0.729
2017 Pakela JM, Lee SY, Hedrick TL, Vishwanath K, Helton MC, Chung YG, Kolodziejski NJ, Stapels CJ, McAdams DR, Fernandez DE, Christian JF, O'Reilly J, Farkas D, Ward BB, Feinberg SE, et al. preclinical verification of a multimodal diffuse reflectance and correlation spectroscopy system for sensing tissue perfusion. Proceedings of Spie--the International Society For Optical Engineering. 10072. PMID 29706683 DOI: 10.1117/12.2252620  0.686
2017 Lee SY, Pakela JM, Hedrick TL, Vishwanath K, Helton MC, Chung Y, Kolodziejski NJ, Stapels CJ, McAdams DR, Fernandez DE, Christian JF, O'Reilly J, Farkas D, Ward BB, Feinberg SE, et al. Novel diffuse optics system for continuous tissue viability monitoring - extended recovery testing in a porcine flap model. Proceedings of Spie--the International Society For Optical Engineering. 10054. PMID 29706680 DOI: 10.1117/12.2252295  0.696
2017 Lee SY, Pakela JM, Helton MC, Vishwanath K, Chung YG, Kolodziejski NJ, Stapels CJ, McAdams DR, Fernandez DE, Christian JF, O'Reilly J, Farkas D, Ward BB, Feinberg SE, Mycek MA. Compact dual-mode diffuse optical system for blood perfusion monitoring in a porcine model of microvascular tissue flaps. Journal of Biomedical Optics. 22: 1-14. PMID 29243415 DOI: 10.1117/1.Jbo.22.12.121609  0.689
2016 Wilson RH, Vishwanath K, Mycek MA. Optical methods for quantitative and label-free sensing in living human tissues: principles, techniques, and applications. Advances in Physics. 1: 523-543. PMID 28824194 DOI: 10.1080/23746149.2016.1221739  0.719
2016 Vishwanath K, Jiang S, Gunn JR, Marra K, Andreozzi JM, Pogue BW. Monitoring longitudinal changes in irradiated head and neck cancer xenografts using diffuse reflectance spectroscopy Proceedings of Spie. 9689. DOI: 10.1117/12.2213192  0.374
2016 Young A, Vishwanath K. Quantitative assessment of reactive hyperemia using laser speckle contrast imaging at multiple wavelengths Proceedings of Spie. 9707. DOI: 10.1117/12.2213179  0.328
2015 Tivnan M, Gurjar R, Wolf DE, Vishwanath K. High Frequency Sampling of TTL Pulses on a Raspberry Pi for Diffuse Correlation Spectroscopy Applications. Sensors (Basel, Switzerland). 15: 19709-22. PMID 26274961 DOI: 10.3390/S150819709  0.391
2014 Hu F, Vishwanath K, Wolfgang Beumer H, Puscas L, Afshari HR, Esclamado RM, Scher R, Fisher S, Lo J, Mulvey C, Ramanujam N, Lee WT. Assessment of the sensitivity and specificity of tissue-specific-based and anatomical-based optical biomarkers for rapid detection of human head and neck squamous cell carcinoma. Oral Oncology. 50: 848-56. PMID 25037162 DOI: 10.1016/J.Oraloncology.2014.06.015  0.369
2014 Malsan J, Gurjar R, Wolf D, Vishwanath K. Extracting optical properties of turbid media using radially and spectrally resolved diffuse reflectance Proceedings of Spie. 8936: 893615. DOI: 10.1117/12.2039964  0.453
2014 Vishwanath K, Gurjar R, Kuo S, Fasi A, Kim R, Riccardi S, Feinberg SE, Wolf DE. Sensing vascularization of ex-vivo produced oral mucosal equivalent (EVPOME) skin grafts in nude mice using optical spectroscopy Progress in Biomedical Optics and Imaging - Proceedings of Spie. 8926. DOI: 10.1117/12.2037085  0.401
2013 Hu F, Vishwanath K, Lo J, Erkanli A, Mulvey C, Lee WT, Ramanujam N. Rapid determination of oxygen saturation and vascularity for cancer detection. Plos One. 8: e82977. PMID 24358243 DOI: 10.1371/Journal.Pone.0082977  0.474
2012 Liu C, Rajaram N, Vishwanath K, Jiang T, Palmer GM, Ramanujam N. Experimental validation of an inverse fluorescence Monte Carlo model to extract concentrations of metabolically relevant fluorophores from turbid phantoms and a murine tumor model. Journal of Biomedical Optics. 17: 077012. PMID 22894524 DOI: 10.1117/1.Jbo.17.7.077012  0.458
2012 Palmer GM, Vishwanath K, Dewhirst MW. Application of optical imaging and spectroscopy to radiation biology. Radiation Research. 177: 365-75. PMID 22360397 DOI: 10.1667/Rr2531.1  0.313
2012 Hu F, Vishwanath K, Phelps JE, Lo J, Lee WT, Ramanujam N. Rapid determination of tissue hemoglobin concentration and oxygen saturation of head and neck cancers for global health applications Biomedical Optics, Biomed 2012. BW3B.4. DOI: 10.1364/Biomed.2012.Bw3B.4  0.41
2011 Zhu Q, Dehghani H, Tichauer KM, Holt RW, Vishwanath K, Leblond F, Pogue BW. A three-dimensional finite element model and image reconstruction algorithm for time-domain fluorescence imaging in highly scattering media Physics in Medicine and Biology. 56: 7419-7434. PMID 22056913 DOI: 10.1088/0031-9155/56/23/006  0.456
2011 Vishwanath K, Chang K, Klein D, Deng YF, Chang V, Phelps JE, Ramanujam N. Portable, Fiber-Based, Diffuse Reflection Spectroscopy (DRS) Systems for Estimating Tissue Optical Properties. Applied Spectroscopy. 62: 206-215. PMID 21499501 DOI: 10.1366/10-06052  0.475
2011 Beumer HW, Vishwanath K, Puscas L, Afshari HR, Ramanujam N, Lee WT. Detection of squamous cell carcinoma and corresponding biomarkers using optical spectroscopy. Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery. 144: 390-4. PMID 21493201 DOI: 10.1177/0194599810394290  0.476
2010 Phelps JE, Vishwanath K, Chang VT, Ramanujam N. Rapid ratiometric determination of hemoglobin concentration using UV-VIS diffuse reflectance at isosbestic wavelengths. Optics Express. 18: 18779-92. PMID 20940771 DOI: 10.1364/Oe.18.018779  0.439
2010 Beumer H, Vishwanath K, Puscas L, Ramanujam N, Lee W. Squamous Cell Carcinoma Detection Using Optical Spectroscopy Otolaryngology–Head and Neck Surgery. 143: P73-P73. DOI: 10.1016/J.Otohns.2010.06.102  0.307
2010 Vishwanath K, Dewhirst M, Oleson J, Ramanujam N. Longitudinal Monitoring of Functional Changes in Irradiated Head and Neck Tumors using Optical Spectroscopy International Journal of Radiation Oncology*Biology*Physics. 78: S118. DOI: 10.1016/J.Ijrobp.2010.07.300  0.312
2009 Vishwanath K, Klein D, Chang K, Schroeder T, Dewhirst MW, Ramanujam N. Quantitative optical spectroscopy can identify long-term local tumor control in irradiated murine head and neck xenografts. Journal of Biomedical Optics. 14: 054051. PMID 19895152 DOI: 10.1117/1.3251013  0.326
2009 Vishwanath K, Yuan H, Barry WT, Dewhirst MW, Ramanujam N. Using optical spectroscopy to longitudinally monitor physiological changes within solid tumors. Neoplasia (New York, N.Y.). 11: 889-900. PMID 19724683 DOI: 10.1593/Neo.09580  0.414
2009 Bender JE, Vishwanath K, Moore LK, Brown JQ, Chang V, Palmer GM, Ramanujam N. A robust Monte Carlo model for the extraction of biological absorption and scattering in vivo. Ieee Transactions On Bio-Medical Engineering. 56: 960-8. PMID 19423425 DOI: 10.1109/Tbme.2008.2005994  0.466
2009 Chu M, Vishwanath K, Klose AD, Dehghani H. Light transport in biological tissue using three-dimensional frequency-domain simplified spherical harmonics equations. Physics in Medicine and Biology. 54: 2493-509. PMID 19336841 DOI: 10.1088/0031-9155/54/8/016  0.395
2009 Brown JQ, Vishwanath K, Palmer GM, Ramanujam N. Advances in quantitative UV-visible spectroscopy for clinical and pre-clinical application in cancer. Current Opinion in Biotechnology. 20: 119-31. PMID 19268567 DOI: 10.1016/J.Copbio.2009.02.004  0.484
2008 Wilson RH, Chandra M, Lo W, Vishwanath K, Izumi K, Feinberg SE, Mycek M. Simulated fiber-optic interrogation of autofluorescence from superficial layer of tissue-engineered construct Frontiers in Optics. DOI: 10.1364/Fio.2008.Ftuk6  0.767
2008 Wilson RH, Vishwanath K, Mycek MA. Semi-Analytical Method for Rapid Simulation of Time-Resolved Reflectance in Layered Epithelial Tissues Frontiers in Optics. DOI: 10.1364/Fio.2008.Ftuk3  0.443
2008 Bender JE, Moore LK, Vishwanath K, Ramanujam N. Factors influencing the accuracy of determining tissue physiology quantitatively using optical spectroscopy Biomedical Optics, Biomed 2008. DOI: 10.1364/Biomed.2008.Btuf22  0.451
2008 Vishwanath K, Yuan H, Moore L, Bender J, Dewhirst M, Ramanujam N. Longitudinal monitoring of 4t1-tumor physiology in vivo with doxorubicin treatment via diffuse optical spectroscopy Biomedical Optics, Biomed 2008. DOI: 10.1364/Biomed.2008.Btuc3  0.354
2006 Vishwanath K, Zhong W, Close M, Mycek MA. Fluorescence quenching by polystyrene microspheres in UV-visible and NIR tissue-simulating phantoms. Optics Express. 14: 7776-88. PMID 19529147 DOI: 10.1364/Oe.14.007776  0.749
2006 Chandra M, Vishwanath K, Fichter GD, Liao E, Hollister SJ, Mycek MA. Quantitative molecular sensing in biological tissues: an approach to non-invasive optical characterization. Optics Express. 14: 6157-71. PMID 19516787 DOI: 10.1364/Oe.14.006157  0.799
2006 Vishwanath K, Izumi K, Chandra M, Feinberg SE, Mycek MA. Quantitative, Noninvasive Optical Sensing in Tissue Engineered Oral Mucosal Constructs Biosilico. DOI: 10.1364/Bio.2006.Me75  0.79
2006 Chandra M, Vishwanath K, Fichter GD, Liao E, Francis MR, Hollister S, Mycek MA. Noninvasive, quantitative fluorescence sensing in 3D tissues: An approach to in vivo molecular characterization of engineered tissue constructs Biosilico. DOI: 10.1364/Bio.2006.Me59  0.769
2006 Wilson RH, Vishwanath K, Mycek MA. Time-Resolved Reflectance of Two-Layered Tissue Models via Scaling of “White” Monte Carlo Simulations Biosilico. DOI: 10.1364/Bio.2006.Me1  0.469
2005 Vishwanath K, Mycek MA. Time-resolved photon migration in bi-layered tissue models. Optics Express. 13: 7466-82. PMID 19498772 DOI: 10.1364/Opex.13.007466  0.76
2004 Vishwanath K, Mycek MA. Do fluorescence decays remitted from tissues accurately reflect intrinsic fluorophore lifetimes? Optics Letters. 29: 1512-4. PMID 15259730 DOI: 10.1364/Ol.29.001512  0.759
2004 Vishwanath K, Mycek M. Simulations of time-resolved autofluorescence decays in epithelial tissue for differing probe geometries Biosilico. DOI: 10.1364/Bio.2004.Thf14  0.738
2004 Zhong W, Vishwanath K, Mycek M. Characteristics of fluorescence quenching by polystyrene microspheres in tissue-simulating phantoms Biosilico. DOI: 10.1364/Bio.2004.Thf13  0.728
2003 Dehghani H, Brooksby B, Vishwanath K, Pogue BW, Paulsen KD. The effects of internal refractive index variation in near-infrared optical tomography: a finite element modelling approach. Physics in Medicine and Biology. 48: 2713-27. PMID 12974584 DOI: 10.1088/0031-9155/48/16/310  0.48
2003 Butte PV, Vishwanath K, Pikul B, Mycek MA, Marcu L. Effects of tissue optical properties on time-resolved fluorescence measurements from brain tumors: An experimental and computational study Proceedings of Spie - the International Society For Optical Engineering. 4955: 600-608. DOI: 10.1117/12.478192  0.502
2003 Brooksby BA, Dehghani H, Vishwanath K, Pogue BW, Paulsen KD. Internal refractive index changes affect light transport in tissue Biomedical Optics. 4955: 296-304. DOI: 10.1117/12.477365  0.477
2003 Mycek MA, Vishwanath K, Pogue BW, Schomacker KT, Nishioka NS. Simulations of time-resolved fluorescence in multilayered biological tissues: applications to clinical data modeling Biomedical Optics. 4958: 51-59. DOI: 10.1117/12.476135  0.56
2003 Vishwanath K, Mycek M. Journal of Fluorescence. 13: 105-108. DOI: 10.1023/A:1022318900882  0.764
2002 Vishwanath K, Pogue B, Mycek MA. Quantitative fluorescence lifetime spectroscopy in turbid media: comparison of theoretical, experimental and computational methods. Physics in Medicine and Biology. 47: 3387-405. PMID 12375827 DOI: 10.1088/0031-9155/47/18/308  0.73
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