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Gutierrez, B.* ; Mateus, D. ; Shiban, E.* ; Meyer, B.U.* ; Lehmberg, J.* ; Navab, N.A.*

A sparse approach to build shape models with routine clinical data.

In: Proceedings (IEEE International Symposium on Biomedical Imaging, ISBI, 29. April - 02.May 2014, Beijing, China). Piscataway, NJ: IEEE, 2014. 258-261
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Statistical shape models (SSMs) are widely used for introducing shape priors in medical image analysis. However, building a SSM usually requires careful data acquisitions to gather training datasets with both sufficient quality and enough shape variations. We present a robust framework to build reliable SSMs from a dataset with outliers and incomplete data. Our method is based on Point Distribution Models (PDMs) and makes use of recent advances in sparse optimisation methods to deal with erroneous correspondences. For validation, we apply the proposed approach to a dataset of 43 (including 24 corrupt) CT scans taken during routine clinical practice. We show that our method is able to improve the quality of the skull SSM in terms of generalization ability, specificity, compactness and robustness to missing data in comparison to standard and state-of-the-art algorithms.
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Publication type Article: Conference contribution
ISBN 9781467319591
Conference Title IEEE International Symposium on Biomedical Imaging, ISBI
Conference Date 29. April - 02.May 2014
Conference Location Beijing, China
Proceedings Title Proceedings
Quellenangaben Volume: , Issue: , Pages: 258-261 Article Number: , Supplement: ,
Publisher IEEE
Publishing Place Piscataway, NJ