John A Viator

Summary

Affiliation: University of California
Country: USA

Publications

  1. ncbi request reprint Accurate measurement of blood vessel depth in port wine stained human skin in vivo using pulsed photothermal radiometry
    Bincheng Li
    University of California at Irvine, Beckman Laser Institute and Medical Clinic, 1002 Health Sciences Road East, Irvine, California 92612, USA
    J Biomed Opt 9:961-6. 2004
  2. ncbi request reprint Photoacoustic discrimination of viable and thermally coagulated blood using a two-wavelength method for burn injury monitoring
    Robert J Talbert
    Department of Biological Engineering, University of Missouri Columbia, Columbia, MO 65211, USA
    Phys Med Biol 52:1815-29. 2007
  3. doi request reprint Automated wavelet denoising of photoacoustic signals for circulating melanoma cell detection and burn image reconstruction
    Scott H Holan
    Department of Statistics, University of Missouri Columbia, Columbia, MO 65211, USA
    Phys Med Biol 53:N227-36. 2008
  4. ncbi request reprint Clinical testing of a photoacoustic probe for port wine stain depth determination
    John A Viator
    Beckman Laser Institute and Medical Clinic, Irvine, California 92612, USA
    Lasers Surg Med 30:141-8. 2002
  5. ncbi request reprint Determination of human skin optical properties from spectrophotometric measurements based on optimization by genetic algorithms
    Rong Zhang
    University of California, Beckman Laser Institute, 1002 Health Sciences Road East, Irvine, California 92612, USA
    J Biomed Opt 10:024030. 2005
  6. ncbi request reprint In vivo port-wine stain depth determination with a photoacoustic probe
    John A Viator
    Beckman Laser Institute, University of California, Irvine, 1002 Health Sciences Road East, Irvine, Calfornia 92612, USA
    Appl Opt 42:3215-24. 2003
  7. ncbi request reprint Influence of laser wavelength and pulse duration on gas bubble formation in blood filled glass capillaries
    Sol Kimel
    Beckman Laser Institute, University of California, Irvine, California 92612, USA
    Lasers Surg Med 36:281-8. 2005
  8. ncbi request reprint Spectra from 2.5-15 microm of tissue phantom materials, optical clearing agents and ex vivo human skin: implications for depth profiling of human skin
    John A Viator
    Beckman Laser Institute, University of California, 1002 Health Sciences Road East, Irvine, CA 92612, USA
    Phys Med Biol 48:N15-24. 2003
  9. ncbi request reprint A comparative study of photoacoustic and reflectance methods for determination of epidermal melanin content
    John A Viator
    Department of Dermatology, Oregon Health and Science University, Portland, Oregon 97239, USA
    J Invest Dermatol 122:1432-9. 2004
  10. ncbi request reprint Increase of dermal blood volume fraction reduces the threshold for laser-induced purpura: implications for port wine stain laser treatment
    Lars O Svaasand
    Norwegian University of Science and Technology, NO 7491, Trondheim, Norway
    Lasers Surg Med 34:182-8. 2004

Collaborators

Detail Information

Publications13

  1. ncbi request reprint Accurate measurement of blood vessel depth in port wine stained human skin in vivo using pulsed photothermal radiometry
    Bincheng Li
    University of California at Irvine, Beckman Laser Institute and Medical Clinic, 1002 Health Sciences Road East, Irvine, California 92612, USA
    J Biomed Opt 9:961-6. 2004
    ..The most superficial PWS depths determined in vivo by PPTR are in good agreement with those measured using optical Doppler tomography (ODT)...
  2. ncbi request reprint Photoacoustic discrimination of viable and thermally coagulated blood using a two-wavelength method for burn injury monitoring
    Robert J Talbert
    Department of Biological Engineering, University of Missouri Columbia, Columbia, MO 65211, USA
    Phys Med Biol 52:1815-29. 2007
    ..4%. These results have shown that photoacoustic imaging could prove to be a valuable tool in the diagnosis of burns...
  3. doi request reprint Automated wavelet denoising of photoacoustic signals for circulating melanoma cell detection and burn image reconstruction
    Scott H Holan
    Department of Statistics, University of Missouri Columbia, Columbia, MO 65211, USA
    Phys Med Biol 53:N227-36. 2008
    ..Such an algorithm may be used for image reconstruction and signal extraction for applications such as burn depth imaging, depth profiling of vascular lesions in skin and the detection of single cancer cells in blood samples...
  4. ncbi request reprint Clinical testing of a photoacoustic probe for port wine stain depth determination
    John A Viator
    Beckman Laser Institute and Medical Clinic, Irvine, California 92612, USA
    Lasers Surg Med 30:141-8. 2002
    ..We designed, constructed, and clinically tested a photoacoustic probe for PWS depth determination...
  5. ncbi request reprint Determination of human skin optical properties from spectrophotometric measurements based on optimization by genetic algorithms
    Rong Zhang
    University of California, Beckman Laser Institute, 1002 Health Sciences Road East, Irvine, California 92612, USA
    J Biomed Opt 10:024030. 2005
    ..Furthermore, the GA approach can lead to a reasonable understanding of the blood volume fraction and other skin properties, provided that the applicability of the diffusion approximation is satisfied...
  6. ncbi request reprint In vivo port-wine stain depth determination with a photoacoustic probe
    John A Viator
    Beckman Laser Institute, University of California, Irvine, 1002 Health Sciences Road East, Irvine, Calfornia 92612, USA
    Appl Opt 42:3215-24. 2003
    ..In vivo measurements of PWS skin with different epidermal melanin concentrations correlated with the phantoms. Thus the photoacoustic probe can be used to determine PWS depth for most patients receiving laser therapy...
  7. ncbi request reprint Influence of laser wavelength and pulse duration on gas bubble formation in blood filled glass capillaries
    Sol Kimel
    Beckman Laser Institute, University of California, Irvine, California 92612, USA
    Lasers Surg Med 36:281-8. 2005
    ..However, recent studies suggest that this assumption may not always be true. Our objective was to quantify thermally induced changes in blood that occur during irradiation using standard laser parameters...
  8. ncbi request reprint Spectra from 2.5-15 microm of tissue phantom materials, optical clearing agents and ex vivo human skin: implications for depth profiling of human skin
    John A Viator
    Beckman Laser Institute, University of California, 1002 Health Sciences Road East, Irvine, CA 92612, USA
    Phys Med Biol 48:N15-24. 2003
    ..In such cases, overestimating mu(ir) will underestimate chromophore depth and vice versa, although the effect is dependent on actual chromophore depth...
  9. ncbi request reprint A comparative study of photoacoustic and reflectance methods for determination of epidermal melanin content
    John A Viator
    Department of Dermatology, Oregon Health and Science University, Portland, Oregon 97239, USA
    J Invest Dermatol 122:1432-9. 2004
    ..We present preliminary modeling for photoacoustic probe design and analysis necessary for depth profiling of epidermal melanin...
  10. ncbi request reprint Increase of dermal blood volume fraction reduces the threshold for laser-induced purpura: implications for port wine stain laser treatment
    Lars O Svaasand
    Norwegian University of Science and Technology, NO 7491, Trondheim, Norway
    Lasers Surg Med 34:182-8. 2004
    ..The aim of this study was to investigate a potential technique for more efficient photocoagulation of small diameter PWS blood vessels in PWS that respond poorly to selective photothermolysis...
  11. ncbi request reprint Relationship between damaged fraction and reflected spectra of denaturing tissues
    Hiroyuki Yoshimura
    Faculty of Engineering, Chiba University, Chiba, Japan
    Lasers Surg Med 37:308-13. 2005
    ..The relationship between the damaged fraction and reflected spectra of denaturing tissues was investigated for a variation of the temperature of the tissues...
  12. ncbi request reprint Photoacoustic detection of metastatic melanoma cells in the human circulatory system
    Ryan M Weight
    Department of Biological Engineering, University of Missouri, Columbia, Missouri 65211, USA
    Opt Lett 31:2998-3000. 2006
    ..Results imply the potential to assay simple blood draws, from healthy and metastatic patients, for the presence of cancerous melanoma providing an unprecedented method for routine cancer screening...
  13. ncbi request reprint PDMS embedded opto-fluidic microring resonator lasers
    Jonathan D Suter
    Biological Engineering Department, 240D Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA
    Opt Express 16:10248-53. 2008
    ..2 microJ/mm(2) pump intensity, the laser output from the fiber prism is 80 nW, corresponding to 50% power extraction efficiency. A microarray structure of parallel OFRRs is also demonstrated, allowing simultaneous multi-color emissions...