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Optimal windows for obtaining optical data for characterization of tissue samples

  • US 6,933,154 B2
  • Filed: 11/15/2002
  • Issued: 08/23/2005
  • Est. Priority Date: 07/09/2002
  • Status: Expired due to Fees
First Claim
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1. A method of identifying a characteristic of a region of a tissue sample, the method comprising the steps of:

  • (a) applying a contrast agent comprising acetic acid to a region of a tissue sample;

    (b) obtaining at least one optical signal from the region within a window of time, wherein the window of time begins at about 30 seconds following application of the contrast agent and ends at about 130 seconds following application of the contrast agent, and wherein the at least one optical signal comprises at least one of;

    (i) a fluorescence signal; and

    (ii) a reflectance signal; and

    (c) identifying a characteristic of the region based at least in part on the at least one optical signal.

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