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In brain imaging, these structures are the liquid interfaces such as the cerebral falx and the sulci, and the lesions when the corresponding tissue is hyperechogenic. The registration procedure is achieved by maximizing the joint probability for a voxel to be included in hyperechogenic structures in both modalities. Experiments were carried out on real datasets acquired during neurosurgical procedures. The proposed validation framework is based on (i) visual assessment, (ii) manual expert estimations , and (iii) a robustness study. Results show that the proposed method (i) is visually efficient, (ii) produces no statistically different registration accuracy compared to manual-based expert registration, and (iii) converges robustly. Finally, the computation time required by our method is compatible with intraoperative use.<\/jats:p>","DOI":"10.1155\/2012\/531319","type":"journal-article","created":{"date-parts":[[2012,1,19]],"date-time":"2012-01-19T21:04:27Z","timestamp":1327007067000},"page":"1-14","source":"Crossref","is-referenced-by-count":30,"title":["3D Rigid Registration of Intraoperative Ultrasound and Preoperative MR Brain Images Based on Hyperechogenic Structures"],"prefix":"10.1155","volume":"2012","author":[{"given":"Pierrick","family":"Coup\u00e9","sequence":"first","affiliation":[{"name":"LaBRI CNRS, UMR 5800, Universit\u00e9 Bordeaux, 33405 Talence Cedex, France"},{"name":"University of Rennes I, CNRS UMR 6074, IRISA, 35042 Rennes, France"},{"name":"INRIA, VisAGeS U746 Unit\/Project, IRISA, 35042 Rennes, France"},{"name":"INSERM, VisAGeS U746 Unit\/Project, IRISA, 35042 Rennes, 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