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Virtual Endoscopy

  • US 20080055308A1
  • Filed: 06/02/2005
  • Published: 03/06/2008
  • Est. Priority Date: 06/23/2004
  • Status: Active Grant
First Claim
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1. A virtual endoscopy method for performing virtual endoscopy on a volumetric image of a lumen-defining structure having an elongated lumen, the method comprising:

  • determining an unfolding axis substantially within the elongated lumen and generally positioned at a camera position, the unfolding axis being divided into axis segments;

    selecting ray casting directions extending generally radially from the axis segments of the unfolding axis;

    tilting at least some of the ray casting directions away from the camera position based on distance between the corresponding axis segment and the camera position;

    performing ray casting along the tilted ray casting directions to define pixel values; and

    arranging the pixel values into an unfolded view.

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