Sparse reconstruction from a limited projection number of the coronary artery tree in X-ray rotational imaging
Cohen, Laurent D.; Toumoulin, Christine; Luo, Limin; Bedossa, Marc; Peyré, Gabriel; Fehrenbach, Jérôme; Nunes, Jean-Claude; Yang, Guanyu; Oukili, Ahmed; Jung, Miyoun; Hu, Ying (2012), Sparse reconstruction from a limited projection number of the coronary artery tree in X-ray rotational imaging, Biomedical Imaging (ISBI), 2012 9th IEEE International Symposium on, IEEE, p. 804-807. http://dx.doi.org/10.1109/ISBI.2012.6235670
TypeCommunication / Conférence
External document linkhttp://hal.archives-ouvertes.fr/hal-00702613
Conference titleISBI 2012
Book titleBiomedical Imaging (ISBI), 2012 9th IEEE International Symposium on
MetadataShow full item record
Author(s)Cohen, Laurent D.
Abstract (EN)This paper deals with the 3D reconstruction of sparse data in X-ray rotational imaging. Due to the cardiac motion, the number of available projections for this reconstruction is equal to four, which leads to a strongly undersampled reconstruction problem. We address thus this illness problem through a regularized iterative method. The whole algorithm is divided into two steps. Firstly, a minimal path segmentation step extracts artery tree boundaries. Secondly, a MAP reconstruction comparing L0-norm and L1-norm priors is applied on this extracted coronary tree. The reconstruction optimization process relies on a separable paraboloidal (SPS) algorithm. Some preliminary results are provided on simulated rotational angiograms.
Subjects / KeywordsX-ray rotational coronary angiography; non-local active contours; minimal path; Maximum a posteriori (MAP); reconstruction
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