Path-length-resolved optical Doppler perfusion monitoring

Babu Varghese, Vinayakrishnan Rajan, Ton van Leeuwen, Wiendelt Steenbergen

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We report the first path-length-resolved perfusion measurements on human skin measured with a phase-modulated low-coherence Mach-Zehnder interferometer with spatially separated fibers for illumination and detection. Optical path lengths of Doppler shifted and unshifted light and path-length-dependent Doppler broadening of multiply scattered light from skin are measured from the Doppler broadened interference peaks appearing in the power spectrum. Perfusion and its variations during occlusion are measured in real time for a given optical path length, and the results are compared with the perfusion signal obtained with a conventional laser Doppler perfusion monitor
Original languageUndefined
Pages (from-to)060508-1-060508-3
Number of pages3
JournalJournal of biomedical optics
Issue number6
Publication statusPublished - 2007


  • IR-74796
  • METIS-243927

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