Systems, methods, and computer-readable media for automatic computed tomography to computed tomography registration

A system for registering initial images of a luminal network with subsequent images of the luminal network, the system comprising:

• a computing device including a processor and a memory;
• and
• an application, stored in the memory and executed by the processor, which when executed, causes the computing device to:
• generate an initial model of a luminal network based on initial images of the luminal network;
• generate a subsequent model of the luminal network based on subsequent images of the luminal network;
• match the initial model with the subsequent model;
• for each of the initial and subsequent models of the luminal network:
• deconstruct the luminal network into a plurality of generations, each generation of the plurality of generations originating at a generation bifurcation of the luminal network and having a subset of airway branches extending from the generation bifurcation;
• generate, for each airway branch of a respective subset of airway branches of each generation, a curved line segment;
• and
• determine a curvature of each curved line segment;
• and
• match a plurality of curved line segments of each subset of airway branches of the initial model with a plurality of curved line segments of each subset of airway branches of the subsequent model.

A system for registering initial images of a luminal network with subsequent of the luminal network, the system comprising:

• a computing device including a processor and a memory;
• and
• an application, stored in the memory and executed by the processor, which when executed, causes the computing device to:
• generate an initial model of a luminal network based on initial images of the luminal network;
• generate a subsequent model of the luminal network based on subsequent images of the luminal network;
• match the initial model with the subsequent model;
• for each of the initial and subsequent models of the luminal network:
• deconstruct the luminal network into a plurality of generations, each generation of the plurality of generations originating at a generation bifurcation of the luminal network and having a subset of airway branches extending from the generation bifurcation;
• generate, for each airway branch of a respective subset of airway branches of each generation, a curved line segment;
• and
• determine a curvature of each curved line segment;
• compare, for each subset of airway branches of each generation, at least one curvature of each curved line segment of the initial model to at least one curvature of each curved line segment of the subsequent model;
• and
• unmatch portions of the initial model from portions of the subsequent model based on the comparison.

A system for registering initial images of a luminal network with subsequent images of the luminal network, the system comprising:

• a computing device including a processor and a memory;
• and
• an application, stored in the memory and executed by the processor, which when executed, causes the computing device to:
• receive initial images of the luminal network;
• receive subsequent images of the luminal network;
• for each of the initial and subsequent images of the luminal network:
• deconstruct the luminal network into a plurality of generations, each generation of the plurality of generations originating at a generation bifurcation of the luminal network and having a subset of airway branches extending from the generation bifurcation;
• generate, for each airway branch of a respective subset of airway branches of each generation, a curved line segment;
• and
• determine a curvature of each curved line segment;
• and
• match a plurality of curved line segments of each subset of airway branches of the initial images with a plurality of curved line segments of each subset of airway branches of the subsequent images.