Polarized light imaging with a hand-held camera

Jessica C. Ramella-Roman, Ken Lee, Scott A. Prahl, Steven L. Jacques

Research output: Contribution to journalConference article

15 Scopus citations

Abstract

Polarized light imaging can facilitate clinical mapping of skin cancer margins and can potentially guide clinical excision. A real-time hand-held polarized-light system was built to image skin lesions in the clinic. The system consisted of two 8-bit CCD cameras (Camera 1 and Camera 2) mounted on two sides of a polarizing beamsplitter. A polarized light source was mounted on the camera assembly and illuminated the patient's skin. Light was polarized parallel to the source-patient-camera plane. The light, reflected from the patient, was collected with an objective lens mounted on the beam splitter and divided into a horizontal (H) and vertical (V) component. The H component was collected by Camera 1, and the V component was collected by Camera 2. A new image was generated based on the polarization ratio (H - V)/(H + V) and displayed. This image was sensitive to the superficial skin layer and some early clinical examples are presented. A web version of this paper is available at the following web site: optics.s.gu.ru/SFM/2002/internet/Jessica/.

Original languageEnglish (US)
Pages (from-to)284-293
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5068
StatePublished - Dec 1 2002
EventSaratov Fall Meeting 2002 Optical Technologies in Biophysics and Medicine IV - Saratov, Russian Federation
Duration: Oct 1 2002Oct 4 2002

Keywords

  • Imaging
  • Melanoma
  • Polarization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Ramella-Roman, J. C., Lee, K., Prahl, S. A., & Jacques, S. L. (2002). Polarized light imaging with a hand-held camera. Proceedings of SPIE - The International Society for Optical Engineering, 5068, 284-293.