Out-of-atlas labeling: A multi-atlas approach to cancer segmentation

Andrew J. Asman, Bennett A. Landman
2012 2012 9th IEEE International Symposium on Biomedical Imaging (ISBI)  
Conventional automated segmentation techniques for magnetic resonance imaging (MRI) fail to perform in a robust and consistent manner when brain anatomy differs wildly from expectationsas is often the case in brain cancers. We propose a novel out-of-atlas technique to estimate the spatial extent of abnormal brain regions by combining multi-atlas based segmentation with semilocal non-parametric intensity analysis. In a study with 30 clinically-acquired MRI scans of patients with malignant
more » ... and 29 atlases of normal anatomy from research acquisitions, we demonstrate that this technique robustly identifies cancerous regions. The resulting segmentations could be used to study cancer morphometrics or guide selection/application/refinement of tumor analysis models or regional image quantification approaches.
doi:10.1109/isbi.2012.6235785 pmid:24443679 pmcid:PMC3892947 dblp:conf/isbi/AsmanL12 fatcat:wepi35cfnjewhi5m52lugkfewq