Surface deformation analysis of collapsed lungs using model-based shape matching.

ABSTRACT: PURPOSE:To facilitate intraoperative localization of lung nodules, this study used model-based shape matching techniques to analyze the inter-subject three-dimensional surface deformation induced by pneumothorax. METHODS:Contrast- enhanced computed tomography (CT) images of the left lungs of 11 live beagle dogs were acquired at two bronchial pressures (14 and 2 cm[Formula: see text]). To address shape matching problems for largely deformed lung images with pixel intensity shift, a complete Laplacian-based shape matching solution that optimizes the differential displacement field was introduced. RESULTS:Experiments were performed to confirm the methods' registration accuracy using CT images of lungs. Shape similarity and target displacement errors in the registered models were improved comp

SUBMITTER: Nakao M 

PROVIDER: S-EPMC6797649 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature