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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 19 — Sep. 12, 2011
  • pp: 17908–17924

Towards a field-compatible optical Spectroscopic device for cervical cancer screening in resource-limited settings: effects of calibration and pressure

Vivide Tuan-Chyan Chang, Delson Merisier, Bing Yu, David K. Walmer, and Nirmala Ramanujam  »View Author Affiliations

Optics Express, Vol. 19, Issue 19, pp. 17908-17924 (2011)

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Quantitative optical spectroscopy has the potential to provide an effective low cost, and portable solution for cervical pre-cancer screening in resource-limited communities. However, clinical studies to validate the use of this technology in resource-limited settings require low power consumption and good quality control that is minimally influenced by the operator or variable environmental conditions in the field. The goal of this study was to evaluate the effects of two sources of potential error: calibration and pressure on the extraction of absorption and scattering properties of normal cervical tissues in a resource-limited setting in Leogane, Haiti. Our results show that self-calibrated measurements improved scattering measurements through real-time correction of system drift, in addition to minimizing the time required for post-calibration. Variations in pressure (tested without the potential confounding effects of calibration error) caused local changes in vasculature and scatterer density that significantly impacted the tissue absorption and scattering properties Future spectroscopic systems intended for clinical use, particularly where operator training is not viable and environmental conditions unpredictable, should incorporate a real-time self-calibration channel and collect diffuse reflectance spectra at a consistent pressure to maximize data integrity.

© 2011 OSA

OCIS Codes
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(170.4440) Medical optics and biotechnology : ObGyn
(170.6510) Medical optics and biotechnology : Spectroscopy, tissue diagnostics

ToC Category:
Medical Optics and Biotechnology

Original Manuscript: March 16, 2011
Revised Manuscript: May 30, 2011
Manuscript Accepted: June 9, 2011
Published: August 29, 2011

Virtual Issues
Vol. 6, Iss. 10 Virtual Journal for Biomedical Optics

Vivide Tuan-Chyan Chang, Delson Merisier, Bing Yu, David K. Walmer, and Nirmala Ramanujam, "Towards a field-compatible optical Spectroscopic device for cervical cancer screening in resource-limited settings: effects of calibration and pressure," Opt. Express 19, 17908-17924 (2011)

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