Prof. Daqing Piao Profile

Prof. Daqing Piao

Professor at Oklahoma State Univ

SPIE Involvement:

Senior status | Conference Program Committee | Author

Publications (54)

Proceedings Article | 7 March 2019

What is the prospect of transcutaneous transmission of 980nm photobiomodulation therapy light to the spinal canal?

Daqing Piao, Lara Sypniewski, Danielle Dugut, Christian Bailey, Luis DeTaboada, Daniel Burba

Proc. SPIE. 10861, Mechanisms of Photobiomodulation Therapy XIV

KEYWORDS: Skin, Tissues, Spinal cord, Natural surfaces, Tissue optics, Phototherapy, Sensors, Head, Laser tissue interaction, Injuries

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Proceedings Article | 5 March 2019

Do the iso-path-length points differ among semi-infinite, concave-cylindrical and convex-cylindrical geometries?

Daqing Piao, Dror Fixler

Proc. SPIE. 10891, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XVI

KEYWORDS: Tissues, Tissue optics, Interfaces, Scattering, Diffuse reflectance spectroscopy, Optical properties, Sensors, Absorption, Light scattering, Natural surfaces

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Proceedings Article | 5 March 2019

Calibration iso-pathlength point in cylindrical tissue geometry: comparing steady state photon diffusion to Monte Carlo simulation

Hamootal Duadi, Daqing Piao, Dror Fixler

Proc. SPIE. 10891, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XVI

KEYWORDS: Tissues, Tissue optics, Diffusion, Scattering, Monte Carlo methods, Photon transport, Optical properties

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Proceedings Article | 4 March 2019

Diffuse optical non-destructive organ risk (DONOR) indexing of significant liver pathology: does the surface measurement represent the parenchyma measurement? (Conference Presentation)

Daqing Piao, Halen Borron, Samara Lewis, Alan Hawxby, Harlan Wright, Erin Rubin

Proc. SPIE. 10874, Optical Tomography and Spectroscopy of Tissue XIII

KEYWORDS: Liver, Pathology, Nondestructive evaluation, Natural surfaces, Transplantation, Control systems, Diffuse optical spectroscopy, Tissues

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Proceedings Article | 4 March 2019

Intra-spinal irradiation distribution associated with local light delivery as measured in a pilot rabbit model: Implications toward epidural photo-neuro-modulation of the spinal cord (Conference Presentation)

Daqing Piao, João Brandão, Kenneth Bartels, Lara Sypniewski

Proc. SPIE. 10861, Mechanisms of Photobiomodulation Therapy XIV

KEYWORDS: Spinal cord, Optical testing, Signal attenuation, Diffusers, Tissue optics, Injuries, Natural surfaces, Bone, Distance measurement

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Proceedings Article | 1 March 2019

An integration model of steady-state single-fiber diffuse reflectance

Tengfei Sun, Daqing Piao

Proc. SPIE. 10874, Optical Tomography and Spectroscopy of Tissue XIII

KEYWORDS: Diffuse reflectance spectroscopy, Absorption, Monte Carlo methods, Scattering, Tissues, Tissue optics, Anisotropy, Photons, Light, Signal attenuation

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SPIE Journal Paper | 29 August 2018

Perspective review on solid-organ transplant: needs in point-of-care optical biomarkers

Daqing Piao, Alan Hawxby, Harlan Wright, Erin Rubin

JBO Vol. 23 Issue 08

KEYWORDS: Liver, Pathology, Tissue optics, Injuries, Ischemia, Biomedical optics, Point-of-care devices, Tissues, Diagnostics, Natural surfaces

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SPIE Journal Paper | 27 July 2018

Effects of capsule on surface diffuse reflectance spectroscopy of the subcapsular parenchyma of a solid organ

Daqing Piao, Halen Borron, Alan Hawxby, Harlan Wright, Erin Rubin

JBO Vol. 23 Issue 12

KEYWORDS: Diffuse reflectance spectroscopy, Scattering, Liver, Absorption, Kidney, Optical properties, Refractive index, Solids, Natural surfaces, Anisotropy

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Proceedings Article | 5 April 2018

In vivo diffuse reflectance spectroscopy of hollow structures and solid organs in the abdominal cavity in a pig model using a laparoscopy-adaptable applicator probe for evaluating the potential of intraoperative tissue classification (Conference Presentation)

Daqing Piao, Mohammad Ramadan, Ion Maloney, Sanjay Patel

Proc. SPIE. 10484, Advanced Biomedical and Clinical Diagnostic and Surgical Guidance Systems XVI

KEYWORDS: Solids, Laparoscopy, Diffuse reflectance spectroscopy, Tissues, Intestine, Tissue optics, Bladder, Stomach, Surgery, Injuries

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Proceedings Article | 14 March 2018

Enabling multi-site intra spinal canal dosimetry of transcutaneous photobiomodulation therapy on cadaver dogs using a custom designed, flexible, 9-channel photo-diode probe (Conference Presentation)

Daqing Piao, Lara Sypniewski, Christian Bailey, Danielle Dugat, Shaghayegh Aslanzadeh, Daniel Burba, Luis De Taboada

Proc. SPIE. 10477, Mechanisms of Photobiomodulation Therapy XIII

KEYWORDS: Spinal cord, Sensors, Injuries, Low level phototherapy, Medicine, Tissues, Tissue optics, Skin

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Proceedings Article | 14 March 2018

Intraoperative identification of underlying major venous and arterial vessels using freehand diffuse optical spectroscopy imaging (freeDOSi) for guiding minimally invasive surgery: an in vivo demonstration in a pig model (Conference Presentation)

Daqing Piao, Mohammad Ramadan, Aaron Park, Kenneth Bartels, Sanjay Patel

Proc. SPIE. 10468, Therapeutics and Diagnostics in Urology 2018

KEYWORDS: Surgery, Imaging spectroscopy, Diffuse optical spectroscopy, Laparoscopy, Injuries, Tissues, Diffuse optical imaging, Optical imaging, In vivo imaging, Tumor growth modeling

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Proceedings Article | 14 March 2018

Effect of capsule on surface diffuse refelectance spectroscopy of capsular solid organs (Conference Presentation)

Daqing Piao, Halen Borron, Alan Hawxby, Harlan Wright, Erin Rubin

Proc. SPIE. 10468, Therapeutics and Diagnostics in Urology 2018

KEYWORDS: Liver, Natural surfaces, Solids, Diffuse reflectance spectroscopy, Kidney, Pathology, Spectroscopy, Tissues

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SPIE Journal Paper | 23 January 2018

Flexible nine-channel photodetector probe facilitated intraspinal multisite transcutaneous photobiomodulation therapy dosimetry in cadaver dogs

Daqing Piao, Lara Sypniewski, Christian Bailey, Danielle Dugat, Daniel Burba, Luis De Taboada

JBO Vol. 23 Issue 01

KEYWORDS: Palladium, Photodiodes, Sensors, Skin, Photodetectors, Spinal cord, Optical testing, Data acquisition, Natural surfaces, Tissue optics

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SPIE Journal Paper | 30 October 2017

Freehand diffuse optical spectroscopy imaging for intraoperative identification of major venous and arterial vessels underlying peritoneal fat: an in vivo demonstration in a pig model

Daqing Piao, Mohammad Ramadan, Aaron Park, Kenneth Bartels, Sanjay Patel

JBO Vol. 22 Issue 10

KEYWORDS: Tissues, Imaging spectroscopy, Aorta, Surgery, Diffuse optical spectroscopy, In vivo imaging, Laparoscopy, Diffuse optical imaging, Optical imaging, Tissue optics

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Proceedings Article | 22 February 2017

Magneto-thermal-acoustic differential-frequency imaging of magnetic nanoparticle with magnetic spatial localization: a theoretical prediction

Daqing Piao

Proc. SPIE. 10066, Energy-based Treatment of Tissue and Assessment IX

KEYWORDS: Magnetism, Nanoparticles, Continuous wave operation, Acoustics, Tissues, Neodymium, Electromagnetism, Computer programming, Microwave radiation

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Proceedings Article | 22 February 2017

Simple coil-powering techniques for generating 10KA/m alternating magnetic field at multiple frequencies using 0.5KW RF power for magnetic nanoparticle hyperthermia

Daqing Piao, Tengfei Sun, Ashish Ranjan

Proc. SPIE. 10066, Energy-based Treatment of Tissue and Assessment IX

KEYWORDS: Nanoparticles, Temperature metrology, Particles, Iron, RF coupling, Copper, Oxides

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Proceedings Article | 17 February 2017

Challenges of transcutaneous laser application for the potential of photobiomodulation of the spinal cord at the scale of a large companion animal

Daqing Piao, Lara Sypniewski, Kenneth Bartels

Proc. SPIE. 10048, Mechanisms of Photobiomodulation Therapy XII

KEYWORDS: Spinal cord, Natural surfaces, Sensors, Photodiodes, Fiber optics sensors, Tissues, Fiber optics, Head, Fiber optics tests, Bone

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Proceedings Article | 8 February 2017

A laparoscopic applicator probe for real-time en-face mapping of near-surface optical sources of heterogeneity over a 1cm instrument-tip-size field-of-view

Daqing Piao, Kenneth Bartels, G. Reed Holyoak, Sanjay Patel

Proc. SPIE. 10049, Molecular-Guided Surgery: Molecules, Devices, and Applications III

KEYWORDS: Laparoscopy, Tissues, Visualization, Surgery, Sensors, Tumors, Natural surfaces, Scattering

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Proceedings Article | 6 February 2017

In vivo fluorescence imaging of an orthotopic rat bladder tumor model indicates differential uptake of intravesically instilled near-infrared labeled 2-deoxyglucose analog by neoplastic urinary bladder tissues

Daqing Piao, Carole Davis, Robert Hurst, Joel Slaton

Proc. SPIE. 10038, Therapeutics and Diagnostics in Urology: Lasers, Robotics, Minimally Invasive, and Advanced Biomedical Devices

KEYWORDS: Bladder, Bladder cancer, In vivo imaging, Near infrared, Tumors, Green fluorescent protein, Imaging systems

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Proceedings Article | 6 February 2017

Orthotopic AY-27 rat bladder urothelial cell carcinoma model presented an elevated methemoglobin proportion in the increased total hemoglobin content when evaluated in vivo by single-fiber reflectance spectroscopy

Tengfei Sun, Carole Davis, Robert Hurst, Joel Slaton, Daqing Piao

Proc. SPIE. 10038, Therapeutics and Diagnostics in Urology: Lasers, Robotics, Minimally Invasive, and Advanced Biomedical Devices

KEYWORDS: In vivo imaging, Reflectance spectroscopy, Bladder cancer, Chromophores, Tumors, Absorption, Scattering, Tissue optics

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SPIE Journal Paper | 5 November 2015

In vivo assessment of diet-induced rat hepatic steatosis development by percutaneous single-fiber spectroscopy detects scattering spectral changes due to fatty infiltration

Daqing Piao, Nigar Sultana, G. Reed Holyoak, Jerry Ritchey, Corey Wall, Jill Murray, Kenneth Bartels

JBO Vol. 20 Issue 11

KEYWORDS: Liver, Scattering, Absorption, Spectroscopy, In vivo imaging, Tissues, Reflectivity, Optical fibers, Tissue optics, Light scattering

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SPIE Journal Paper | 14 October 2015

On the geometry dependence of differential pathlength factor for near-infrared spectroscopy. I. Steady-state with homogeneous medium

Daqing Piao, Randall Barbour, Harry Graber, Daniel Lee

JBO Vol. 20 Issue 10

KEYWORDS: Sensors, Spherical lenses, Optical spheres, Diffusion, Finite element methods, Near infrared spectroscopy, Scattering, Optical properties, Head, Absorption

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Proceedings Article | 25 March 2013

Development of transrectal diffuse optical tomography combined with 3D-transrectal ultrasound imaging to monitor the photocoagulation front during interstitial photothermal therapy of primary focal prostate cancer

Jie He, Robert Weersink, Israel Veilleux, Kenwrick Mayo, Anqi Zhang, Daqing Piao, Adeel Alam, John Trachtenberg, Brian Wilson

Proc. SPIE. 8578, Optical Tomography and Spectroscopy of Tissue X

KEYWORDS: Tissue optics, Sensors, Scattering, Laser therapeutics, Optical properties, Prostate cancer, Reconstruction algorithms, Signal detection, Laser coagulation, Tissues

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Proceedings Article | 25 March 2013

Normalized Born ratio of steady-state fluorescence in concave- and convex-shaped infinitely long cylindrical medium geometries

Anqi Zhang, Daqing Piao

Proc. SPIE. 8578, Optical Tomography and Spectroscopy of Tissue X

KEYWORDS: Sensors, Luminescence, Diffusion, Finite element methods, Chemical elements, Target detection, Interfaces, Optical properties, Scattering

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Proceedings Article | 23 February 2011

Forward model of thermally-induced acoustic signal specific to intralumenal detection geometry

Sovanlal Mukherjee, Charles Bunting, Daqing Piao

Proc. SPIE. 7899, Photons Plus Ultrasound: Imaging and Sensing 2011

KEYWORDS: Acoustics, Tissues, Microwave radiation, Absorption, Signal detection, Tomography, Thermal modeling, Reconstruction algorithms, Bessel functions, Fourier transforms

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Proceedings Article | 17 February 2011

"Spiral-planar equivalence" of steady state photon diffusion associated with a cylindrical applicator

Anqi Zhang, Daqing Piao, Charles Bunting

Proc. SPIE. 7896, Optical Tomography and Spectroscopy of Tissue IX

KEYWORDS: Diffusion, Sensors, Finite element methods, Interfaces, Radium, Tissues, Tissue optics, Optical sensing, Rubidium, Diffuse optical imaging

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We predict the phenomenon of "spiral-planar equivalence" for steady-state photon diffusion associated with a cylindrical applicator. Recently we have derived a unified theory of steady-state photon diffusion in a homogenous medium bounded either externally (referred to as a concave geometry) or internally (referred to as a convex geometry) by an infinitely long circular cylindrical applicator [JOSAA, 27(3): 648-662 (2010)]. Despite the idealization of the geometry by assuming an infinite length of the applicator, the analytic prediction withholds the quantitative examinations based on experimental measurements, and finite-element solution of photon diffusion. An interesting finding is that the decay of photon fluence in a concave boundary is smaller in the azimuth direction but greater along the longitudinal direction, in comparison with that in a semi-infinite geometry along a straight line, for the same line-of-sight distance between the source and the detector. Conversely, the decay of photon fluence in a convex boundary is greater in the azimuth direction but smaller along the longitudinal direction, in comparison with that in a semi-infinite geometry along a straight line, for the same line-of-sight source-detector distance. These findings suggest that on the cylindrical applicator interface there should exist a spiral direction (oblique to both the azimuthal and longitudinal directions), along which the rate of photon fluence decay follows that along a straight line on a planar semi-infinite interface---which is called the "spiral-planar equivalence". The "spiral-planar equivalence" is derivable analytically, and subject to quantitative evaluations. Validating the "spiral-planar equivalence" not only enriches the understanding of photon diffusion in cylindricalinterface geometry, but also provides unique semi-infinite-based imaging application in trans-lumenal diffuse optical sensing. The "spiral-planar equivalence" may be applicable to time-resolved photon-diffusion.

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Proceedings Article | 17 February 2011

Feasibility of rapid near-infrared diffuse optical tomography by swept-spectral-encoded sequential light delivery

Guan Xu, Daqing Piao

Proc. SPIE. 7896, Optical Tomography and Spectroscopy of Tissue IX

KEYWORDS: Data modeling, Light, Calibration, Spectroscopy, Signal detection, Data acquisition, Imaging systems, Computer programming, Diffuse optical tomography, Sensors

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Proceedings Article | 17 February 2011

Feasibility of minimally-invasive fiber-based evaluation of chondrodystrophoid canine intervertebral discs by light absorption and scattering spectroscopy

Yuanyuan Jiang, Kelci McKeirnan, Daqing Piao, Kenneth Bartels

Proc. SPIE. 7895, Optical Biopsy IX

KEYWORDS: Reflectivity, Scattering, Light scattering, Spectroscopy, Absorption, Tissues, Laser scattering, Laser ablation, Tissue optics, Calibration

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Extrusion or protrusion of an intervertebral disc is a common, frequently debilitating, painful, and sometimes fatal neurologic disease in the chondrodystrophic dog (dachshund, Pekingese, etc.). A similar condition of intervertebral disc degeneration with extrusion/protrusion is also a relatively common neurologic condition in human patients. Degeneration of the relatively avascular chondrodystrophoid intervertebral disc is associated with loss of water content, increased collagen, and deposits of calcified mineral in the nucleus pulposus. Current diagnostic methods have many limitations for providing accurate information regarding disc composition in situ prior to surgical intervention. Disc composition (i.e., mineralization), can influence the type of treatment regime and potentially prognosis and recurrence rates. The objective of this study is to investigate the feasibility of using a fiber-needle spectroscopy sensor to analyze the changes of tissue compositions involved in the chondrodystrophoid condition of the canine intervertebral disc. The nucleous pulposus, in which the metaplastic process / degeneration develops, is approximately 2mm thick and 5mm in diameter in the dachshund-sized dog. It lies in the center of the disc, surrounded by the annulus fibrosis and is enclosed by cartilaginous vertebral endplates cranially and caudally. This "shallow-and-small-slab" geometry limits the configuration of a fiber probe to sense the disc tissue volume without interference from the vertebrae. A single-fiber sensor is inserted into a 20 gauge myelographic spinal needle for insertion into the disc in situ and connected via a bifurcated fiber to the light source and a spectrometer. A tungsten light source and a 940nm light-emitting-diode are combined for spectral illumination covering VIS/NIR with expected improved sensitivity to water. Analysis of the reflectance spectra is expected to provide information of scattering and absorption compositions of tissue in proximity to the fiber-tip. Preliminary measurements on cadaveric canine intervertebral discs indicated significant reduction of scattering constituents and possible diminishment of water content after percutaneous laser disc ablation (PLDA). This fiber-needle based sensing configuration may be feasible for integrating the evaluation of calcification and water content into the work-flow of holmium:YAG laser disc ablation for pre-operative in-line detection and post-operative evaluation of therapeutic interventions regarding the chondrodystrophic disc.

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Proceedings Article | 17 February 2011

Optical biopsy of the prostate: can we TRUST (trans-rectal ultrasound-coupled spectral tomography)?

Daqing Piao, Zhen Jiang, Kenneth Bartels, G. Reed Holyoak, Jerry Ritchey, Kendra Rock, Charlotte Ownby, Charles Bunting, Gennady Slobodov

Proc. SPIE. 7895, Optical Biopsy IX

KEYWORDS: Prostate, Near infrared, Tumors, Tissues, Tissue optics, Prostate cancer, Tomography, Ultrasonography, Optical tomography, Absorption

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Proceedings Article | 10 February 2011

Spectral a priori to spatial a posteriori in continuous-wave image reconstruction in near-infrared optical tomography

Guan Xu, Daqing Piao, Hamid Dehghani

Proc. SPIE. 7892, Multimodal Biomedical Imaging VI

KEYWORDS: Scattering, Chromophores, Optical tomography, Continuous wave operation, Image restoration, Absorption, Modulation, Image quality, Reliability, Computer simulations

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Proceedings Article | 10 February 2011

Different optical spectral characteristics in a necrotic transmissible venereal tumor and a cystic lesion in the same canine prostate observed by triple-band trans-rectal optical tomography under trans-rectal ultrasound guidance

Zhen Jiang, G. Reed Holyoak, Jerry Ritchey, Kenneth E. Bartels, Kendra Rock, Charlotte Ownby, Gennady Slobodov, Charles Bunting, Daqing Piao

Proc. SPIE. 7892, Multimodal Biomedical Imaging VI

KEYWORDS: Prostate, Tumors, Near infrared, Ultrasonography, Prostate cancer, Doppler tomography, Optical tomography, Tissues, Imaging systems, Oxygen

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SPIE Journal Paper | 1 May 2009

In vivo trans-rectal ultrasound-coupled optical tomography of a transmissible venereal tumor model in the canine pelvic canal

Zhen Jiang, G. Reed Holyoak, Kenneth Bartels, Jerry Ritchey, Guan Xu, Charles Bunting, Gennady Slobodov, Daqing Piao

JBO Vol. 14 Issue 03

KEYWORDS: Near infrared, Tumors, Prostate, In vivo imaging, Optical tomography, Tissues, Absorption, Tomography, Ultrasonography, Scattering

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Proceedings Article | 20 February 2009

A hierarchical spatial prior approach for prostate image reconstruction in trans-rectal optical tomography

Guan Xu, Charles Bunting, Hamid Dehghani, Daqing Piao

Proc. SPIE. 7171, Multimodal Biomedical Imaging IV

KEYWORDS: Prostate, Tissues, Near infrared, Tumors, Optical properties, Rectum, Optical tomography, Absorption, Tomography, Tissue optics

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Proceedings Article | 20 February 2009

Development of a continuous-wave dual-band trans-rectal optical tomography system for concurrent sagittal imaging with trans-rectal ultrasound

Zhen Jiang, Hao Xie, Daqing Piao, Jerzy Krasinski

Proc. SPIE. 7171, Multimodal Biomedical Imaging IV

KEYWORDS: Near infrared, Absorption, Ultrasonography, Imaging systems, Blood, Oxygen, Transducers, Tomography, Sensors, CCD image sensors

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Proceedings Article | 12 February 2009

In vivo trans-rectal ultrasound coupled trans-rectal near-infrared optical tomography of canine prostate bearing transmissible venereal tumor

Zhen Jiang, G. Reed Holyoak, Kenneth Bartels, Jerry Ritchey, Guan Xu, Charles Bunting, Gennady Slobodov, Jerzy Krasinski, Daqing Piao

Proc. SPIE. 7174, Optical Tomography and Spectroscopy of Tissue VIII

KEYWORDS: Near infrared, Prostate, Tumors, In vivo imaging, Absorption, Scattering, Ultrasonography, Tissue optics, Tomography, Tissues

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Proceedings Article | 12 February 2009

Forward modeling of axial trans-lumenal diffuse optical imaging with a cylindrical applicator using continuous-wave photon-illumination

Anqi Zhang, Daqing Piao, Gang Yao, Charles Bunting, Jerzy Krasinski, Brian Pogue

Proc. SPIE. 7174, Optical Tomography and Spectroscopy of Tissue VIII

KEYWORDS: Diffusion, Photon transport, Diffuse optical imaging, Sensors, Continuous wave operation, Monte Carlo methods, Calibration, Bessel functions, Optical tomography, Ions

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Proceedings Article | 20 February 2008

Approach of trans-rectal NIR optical tomography probing for the imaging of prostate with trans-rectal ultrasound correlation

Daqing Piao, Zhen Jiang, Guan Xu, Cameron Musgrove, Charles Bunting

Proc. SPIE. 6850, Multimodal Biomedical Imaging III

KEYWORDS: Near infrared, Prostate, Tomography, Tissues, Optical tomography, Transducers, Sensors, Optical fibers, Prostate cancer, Data modeling

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Proceedings Article | 20 February 2007

Near-infrared optical tomography: endoscopic imaging approach

Daqing Piao, Hao Xie, Cameron Musgrove, Charles Bunting, Weili Zhang, Guolong Zhang, Ellen Domnick-Davidsion, Kenneth Bartels, G. Reed Holyoak, Sreenivas Vemulapalli, Hamid Dehghani, Brian Pogue

Proc. SPIE. 6431, Multimodal Biomedical Imaging II

KEYWORDS: Near infrared, Tomography, Endoscopy, Prostate, Optical tomography, Light, Light sources, Imaging systems, In vivo imaging, Tissues

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Proceedings Article | 13 February 2007

Computational aspects of endoscopic (trans-rectal) near-infrared optical tomography: initial investigations

Cameron Musgrove, Charles Bunting, Hamid Dehghani, Brian Pogue, Daqing Piao

Proc. SPIE. 6434, Optical Tomography and Spectroscopy of Tissue VII

KEYWORDS: Near infrared, Tomography, Endoscopy, Optical tomography, Tissues, Prostate, Sensors, Image restoration, Natural surfaces, Diffusion

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SPIE Journal Paper | 1 January 2007

Rapid near-infrared diffuse tomography for hemodynamic imaging using a low-coherence wideband light source

Daqing Piao, Brian Pogue

JBO Vol. 12 Issue 01

KEYWORDS: Optical fibers, Computer programming, Tomography, Absorption, Near infrared, Imaging arrays, Imaging systems, Diffuse optical tomography, Tissues, Signal detection

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Proceedings Article | 21 July 2006

Rapid NIR optical tomography at 35 frames per second by spectrally-encoded parallel light delivery

Daqing Piao, Hamid Dehghani, Shudong Jiang, Subhadra Srinivasan, Brian Pogue

Proc. SPIE. 6163, Saratov Fall Meeting 2005: Optical Technologies in Biophysics and Medicine VII

KEYWORDS: Sensors, Imaging systems, Signal detection, Tomography, Spectroscopy, Charge-coupled devices, Data acquisition, Absorption, Tissues, Near infrared

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Proceedings Article | 13 February 2006

Instrumentation of rapid near-infrared diffuse optical tomography for imaging of tissue at 35 frames per second

Daqing Piao, Shudong Jiang, Hamid Dehghani, Subhadra Srinivasan, Brian Pogue

Proc. SPIE. 6081, Multimodal Biomedical Imaging

KEYWORDS: Imaging systems, Sensors, Tomography, Spectroscopy, Signal detection, Data acquisition, Absorption, Charge-coupled devices, Light, Tissues

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SPIE Journal Paper | 1 July 2005

Hybrid positron detection and optical coherence tomography system: design, calibration, and experimental validation with rabbit atherosclerotic models

Daqing Piao, Mehran Sadeghi, Jiasheng Zhang, Yueli Chen, Albert Sinusas, Quing Zhu

JBO Vol. 10 Issue 04

KEYWORDS: Optical coherence tomography, Optical fibers, Imaging systems, Arteries, Calibration, In vivo imaging, Prototyping, Injuries, Waveguides, Gradient-index optics

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Proceedings Article | 28 April 2005

Spectral-encoding for parallel source implementation in NIR tomography

Daqing Piao, Shudong Jiang, Subhadra Srinivasan, Yalavarthy Kumar, Xiaomei Song, Brian Pogue

Proc. SPIE. 5693, Optical Tomography and Spectroscopy of Tissue VI

KEYWORDS: Spectroscopy, Tomography, Signal detection, Near infrared, Charge-coupled devices, Sensors, Light, Data acquisition, Computer programming, Tissue optics

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Proceedings Article | 28 April 2005

Tumor angiogenesis and tumor hypoxia as diagnostic indices for differentiation of benign versus malignant breast masses

Quing Zhu, Scott Kurtzman, Edward Cronin, Mark Kane, Minming Huang, Chen Xu, NanGuang Chen, Daqing Piao, Poornima Hedge, Susan Tannenbaum, Bipin Jagjivan, Kristen Zarfos

Proc. SPIE. 5693, Optical Tomography and Spectroscopy of Tissue VI

KEYWORDS: Tumors, Hypoxia, Breast, Diagnostics, Ultrasonography, Biopsy, Oxygen, Absorption, Tissue optics, Skin

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Proceedings Article | 13 April 2005

A hybrid positron detection and optical coherence tomography system: design, calibration, and experimental validation with rabbit atherosclerotic models

Quing Zhu, Daqing Piao, Mehran Sadeghi, Jiasheng Zhang, Yueli Chen, Albert Sinusas

Proc. SPIE. 5690, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine IX

KEYWORDS: Optical coherence tomography, Imaging systems, Optical fibers, Arteries, Injuries, Computing systems, Prototyping, Calibration, Data modeling, Single photon emission computed tomography

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SPIE Journal Paper | 1 May 2004

Digital signal processor-based real-time optical Doppler tomography system

Shikui Yan, Daqing Piao, Yueli Chen, Quing Zhu

JBO Vol. 9 Issue 03

KEYWORDS: Digital signal processing, Signal processing, Image processing, Optical filters, Filtering (signal processing), Doppler effect, Electronic filtering, Signal detection, Doppler tomography, Data acquisition

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SPIE Journal Paper | 1 May 2004

Portable near-infrared diffusive light imager for breast cancer detection

Nanguang Chen, Minming Huang, Hongjun Xia, Daqing Piao, Edward Cronin, Quing Zhu

JBO Vol. 9 Issue 03

KEYWORDS: Imaging systems, Data acquisition, Ultrasonography, Breast cancer, Optical switching, Semiconductor lasers, Avalanche photodetectors, Absorption, Avalanche photodiodes, Sensors

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Proceedings Article | 29 July 2003

Portable multichannel multiwavelength near-infrared diffusive light imager

Nan Guang Chen, Hongjun Xia, Daqing Piao, Quing Zhu

Proc. SPIE. 4955, Optical Tomography and Spectroscopy of Tissue V

KEYWORDS: Avalanche photodetectors, Optical switching, Imaging systems, Sensors, Signal detection, Control systems, Semiconductor lasers, Calibration, Optical tomography, Optical fibers

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Proceedings Article | 8 July 2003

Doppler angle and flow velocity estimation using conventional single-probing-beam optical Doppler tomography

Daqing Piao, Quing Zhu

Proc. SPIE. 4956, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VII

KEYWORDS: Doppler effect, Doppler tomography, Signal to noise ratio, Signal detection, In vivo imaging, Optical filters, Laser induced plasma spectroscopy, Computer simulations, Bandpass filters, Linear filtering

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Proceedings Article | 8 July 2003

DSP-based optical Doppler tomography system for real-time signal processing

Shikui Yan, Daqing Piao, Yueli Chen, Quing Zhu

Proc. SPIE. 4956, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine VII

KEYWORDS: Digital signal processing, Signal processing, Image processing, Data acquisition, Signal detection, MATLAB, Blood circulation, Data processing, Electronic filtering, Doppler tomography

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Proceedings Article | 29 June 2001

Ultrasound-assisted NIR imaging for breast cancer detection

Nanguang Chen, Puyun Guo, Shikui Yan, Daqing Piao, Quing Zhu

Proc. SPIE. 4250, Optical Tomography and Spectroscopy of Tissue IV

KEYWORDS: Ultrasonography, Near infrared, Absorption, Transducers, Optical fibers, Optical properties, Sensors, Reconstruction algorithms, Imaging systems, Breast cancer

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Proceedings Article | 15 June 2001

Near-infrared probe design with ultrasound guidance

Quing Zhu, Nanguang Chen, Daqing Piao, Puyun Guo

Proc. SPIE. 4256, Biomedical Optoacoustics II

KEYWORDS: Ultrasonography, Absorption, Sensors, Transducers, Tissue optics, 3D image processing, Optical properties, 3D acquisition, Reflection, Protactinium

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Proceedings Article | 23 May 2001

Cancellation of coherent artifacts in OCT imaging

Daqing Piao, Quing Zhu, Niloy Dutta, Shikui Yan, Linda Otis

Proc. SPIE. 4251, Coherence Domain Optical Methods in Biomedical Science and Clinical Applications V

KEYWORDS: Optical coherence tomography, Teeth, Point spread functions, Interfaces, Deconvolution, Mirrors, Image quality, Light scattering, Scanners, Optical amplifiers

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