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Flowometry in optical coherence tomography for analyte level estimation

  • US 8,571,617 B2
  • Filed: 03/04/2009
  • Issued: 10/29/2013
  • Est. Priority Date: 03/04/2008
  • Status: Active Grant
First Claim
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1. A method of determining blood analyte levels in a tissue sample using optical coherence tomography (OCT), comprising:

  • scanning a plurality of regions in the tissue sample using OCT to provide corresponding intensity data measurement;

    analyzing the intensity data measurements to determine an indication of blood flow in the corresponding region by at least;

    passing the intensity data measurements through a narrow band filter to produce a first output;

    passing the intensity data measurements through a wide band filter to produce a second output; and

    comparing the first and second outputs to determine the indication of blood flow; and

    obtaining blood analyte levels from at least one of the regions having a positive indication of blood flow present as analyzed from OCT measurements.

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