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TOMOGRAPHIC IMAGING FOR INTERVENTIONAL TOOL GUIDANCE

  • US 20160166329A1
  • Filed: 12/15/2014
  • Published: 06/16/2016
  • Est. Priority Date: 12/15/2014
  • Status: Abandoned Application
First Claim
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1. A navigational tracking method for visually tracking a navigational tool, comprising:

  • acquiring a set of projection data using an X-ray source and detector at a first frequency or when prompted by a user or physiological monitor, wherein the set of projection data is acquired over a limited angular range by continuously moving the X-ray source and detector in an orbital trajectory with respect to a navigational volume such that the X-ray source and detector each stay on different respective sides of the navigational volume;

    determining a position of a high-contrast instrument within the set of projection data or images generated using the set of projection data;

    updating an instrument representation of the high-contrast instrument in the navigational volume at a first rate based on the determined position; and

    updating a tissue representation depicting low-contrast structures within the navigational volume at a second rate that is equal to or less than the first rate, wherein the low-contrast structures include a target structure or region of the high-contrast instrument.

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