The goal of this work was to find a new parametric model suited to the representation of three-dimensional (3D) bone microarchitecture that can be used as a prior model in tomographic reconstruction or image segmentation. For this purpose, Markov random fields (MRFs) are well adapted. Bone microarchitecture is typically organized as a pseudoperiodic arrangement of parallel plates with a given thickness (/spl sim/ 100 /spl mu/m), and spacing (/spl sim/ 700 /spl mu/m). As standard Ising MRFs could not represent the complexity of bone, we investigated energy functions based on the design of a neighborhood system including local and distant interactions. The parameters of this MRF model were related to the standard morphometric parameters of bone microarchitecture.


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    Title :

    A prior model for bone microarchitecture reconstruction with a very limited number of projections


    Contributors:
    Lamotte, T. (author) / Peyrin, F. (author) / Dinten, J. (author)


    Publication date :

    2005-01-01


    Size :

    234215 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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