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Matches in SemOpenAlex for { <https://semopenalex.org/work/W1972829195> ?p ?o ?g. }

• W1972829195 endingPage "2029" @default.
• W1972829195 startingPage "2019" @default.
• W1972829195 abstract "Accurate automatic extraction of a 3-D cerebrovascular system from images obtained by time-of-flight (TOF) or phase contrast (PC) magnetic resonance angiography (MRA) is a challenging segmentation problem due to the small size objects of interest (blood vessels) in each 2-D MRA slice and complex surrounding anatomical structures (e.g., fat, bones, or gray and white brain matter). We show that due to the multimodal nature of MRA data, blood vessels can be accurately separated from the background in each slice using a voxel-wise classification based on precisely identified probability models of voxel intensities. To identify the models, an empirical marginal probability distribution of intensities is closely approximated with a linear combination of discrete Gaussians (LCDG) with alternate signs, using our previous EM-based techniques for precise linear combination of Gaussian-approximation adapted to deal with the LCDGs. The high accuracy of the proposed approach is experimentally validated on 85 real MRA datasets (50 TOF and 35 PC) as well as on synthetic MRA data for special 3-D geometrical phantoms of known shapes." @default.
• W1972829195 created "2016-06-24" @default.
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• W1972829195 date "2012-07-01" @default.
• W1972829195 modified "2023-10-18" @default.
• W1972829195 title "Precise Segmentation of 3-D Magnetic Resonance Angiography" @default.
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• W1972829195 doi "https://doi.org/10.1109/tbme.2012.2196434" @default.
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