John A Viator

Summary

Affiliation: University of California
Country: USA

Publications

  1. ncbi 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 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. ncbi 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 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 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 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 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 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 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 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 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 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. ncbi 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 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 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 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 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
    ..CONCLUSIONS: For laser treatment of HVSL it appears that lambda is of secondary importance and that the choice of t(p) is a more important factor...
  8. ncbi 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 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 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 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 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 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...