Patent ID: 11950855
Assignee: COVIDIEN LP
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 5:
6. A system comprising:
one or more processors; and
one or more processor-readable storage media storing instructions which, when executed by the one or more processors, cause performance of:
dividing a 3D model of a patient's lungs into different lung regions;
assigning a weight to each of the different lung regions;
receiving, as input, a selection of a plurality of reference points within the 3D model of the patient's lungs;
generating a reference airway tree based on the selection of the plurality of reference points within the 3D model of the patient's lungs;
generating a survey airway tree;
dividing each of the reference airway tree and the survey airway tree into different lung regions that are the same as the different lung regions of the 3D model;
assigning a weight to each region of the different lung regions of the reference airway tree;
for each lung region of the different lung regions of the survey airway tree, assigning a weight to each of a plurality of survey points located within that lung region;
determining, for each lung region of the respective different lung regions of the reference airway tree and the survey airway tree, an alignment between the survey airway tree and the reference airway tree based on a weight assigned to that lung region of the reference airway tree and the weight assigned to each of the plurality of survey points located within that lung region of the survey airway tree; and
minimizing a divergence between the survey airway tree and the reference airway tree based on the alignments.