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Method and system for image processing to determine patient-specific blood flow characteristics

  • US 10,052,158 B2
  • Filed: 12/31/2015
  • Issued: 08/21/2018
  • Est. Priority Date: 08/12/2010
  • Status: Active Grant
First Claim
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1. A method of image processing to determine a blood flow characteristic, comprising:

  • receiving patient-specific image data that includes a representation of at least a vessel and a stenosis in the vessel of a patient;

    estimating an outlet flow rate of the stenosis based on a cross-sectional metric at an outlet of the stenosis, a cross-sectional metric at an inlet of the stenosis, and an estimated blood flow rate or pressure at the inlet of the stenosis;

    estimating a fractional flow reserve (“

    FFR”

    ) or resistance to flow of blood through the stenosis based on the estimated blood flow rate or pressure at the inlet of the stenosis, the estimated outlet flow rate, and a computational fluid dynamics simulation;

    assigning, to the estimated FFR or resistance of the vessel, one of a plurality of different pre-defined visual indicators based on an empirical model and one of the estimated outlet flow rate or the estimated FFR or resistance; and

    generating a display indicative of the visual indicators assigned to the estimated FFR or resistance.

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