A system and method for determining a size of an airway lumen and a thickness of a airway wall

摘要

A method for determining a size of an airway lumen and a thickness of a airway wall includes: calculating a centerline of an airway; Calculating a three-dimensional (3-D) gradient of a volume of the airway within a first threshold; Poisitioning of a tube along the midline; repeatedly expanding the tube by increasing its radius until the radius of the tube reaches the first threshold; Determining the inner and outer radius of the tube by examining the 3-D gradient calculated along an x-axis and a y-axis of the tube at an edge of the tube at each repetition; and adjusting the tube into the airway using the determined inner and outer radius, wherein the inner radius of the mated tube is one-half of a diameter of the airway lumen, and the outer radius of the mated tube minus the inner radius of the mated tube is a thickness of the airway Wall has.