Abstract
We present a fast and robust supervised algorithm for labeling anatomical airway trees, based on geodesic distances in a geometric tree-space. Possible branch label configurations for a given tree are evaluated based on distances to a training set of labeled trees. In tree-space, the tree topology and geometry change continuously, giving a natural way to automatically handle anatomical differences and noise. The algorithm is made efficient using a hierarchical approach, in which labels are assigned from the top down. We only use features of the airway centerline tree, which are relatively unaffected by pathology. A thorough leave-one-patient-out evaluation of the algorithm is made on 40 segmented airway trees from 20 subjects labeled by 2 medical experts. We evaluate accuracy, reproducibility and robustness in patients with Chronic Obstructive Pulmonary Disease (COPD). Performance is statistically similar to the inter- and intra-expert agreement, and we found no significant correlation between COPD stage and labeling accuracy.
Original language | English |
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Title of host publication | Medical Image Computing and Computer-Assisted Intervention, MICCAI2012 - 15th International Conference, Proceedings |
Editors | Nicholas Ayache, Herve Delingette, Polina Golland, Kensaku Mori |
Publisher | Springer-Verlag |
Pages | 147-155 |
Number of pages | 9 |
ISBN (Print) | 9783642334535 |
DOIs | |
Publication status | Published - 2012 |
Event | 15th International Conference on Medical Image Computing and Computer Assisted Intervention, MICCAI 2012 - Nice, France Duration: 1 Oct 2012 → 5 Oct 2012 |
Publication series
Series | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
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Volume | 7512 LNCS |
ISSN | 0302-9743 |
Conference
Conference | 15th International Conference on Medical Image Computing and Computer Assisted Intervention, MICCAI 2012 |
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Country/Territory | France |
City | Nice |
Period | 1/10/12 → 5/10/12 |
Bibliographical note
Funding Information:Acknowledgement. This research was supported by the Lundbeck Foundation; AstraZeneca; The Danish Council for Strategic Research; Netherlands Organisation for Scientific Research; Centre for Stochastic Geometry and Advanced Bioimaging, funded by the Villum Foundation. M.O. was funded by a Fields-Ontario Postdoctoral Fellowship.
Publisher Copyright:
© Springer-Verlag Berlin Heidelberg 2012.