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Process and device for non-invasively determining cerebral blood flow by near-infrared spectroscopy

  • US 6,223,069 B1
  • Filed: 07/02/1999
  • Issued: 04/24/2001
  • Est. Priority Date: 08/29/1996
  • Status: Expired due to Fees
First Claim
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1. A process for the noninvasive determination of blood flow, comprising the steps of:

  • intravenously administrating a predetermined amount of a tracer substance simultaneously into different regions of a patient, the tracer substance having absorption properties in the near-infrared spectrum;

    determining a first dye curve by near-infrared spectroscopy; and

    determining a second dye curve by pulse densitometry, wherein the first and second dye curves are determined simultaneously.

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