Patent ID: 9218664
Filing Date: 2015-12-22
Classification: A61B,G06T

Abstract:
1. An apparatus, comprising: a first radiopaque marker coupled to a device at a first location, a second radiopaque marker coupled to the device at a second location, wherein the first and second markers change in orientation relative to each other during a path of motion of a dynamic body; a first element coupled to the device proximate the location of the first marker; and a second element coupled to the device proximate the location of the second marker; the first element and the second element each being coupled to a processor and configured to simultaneously send to the processor position data associated with a plurality of positions in three-dimensional space of the first element and position data associated with a plurality of positions in three-dimensional space of the second element during the path of motion of the dynamic body; wherein the processor determines a vector distance between the position of the first element and the position of the second element based on the position data for each instant of time for a plurality of instants of time during the motion of the dynamic body.