A patient-specific segmentation framework for longitudinal MR images of traumatic brain injury

Bo Wang, Marcel Prastawa, Andrei Irimia, Micah C. Chambers, Paul M. Vespa, John D. Van Horn, Guido Gerig

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Traumatic brain injury (TBI) is a major cause of death and disability worldwide. Robust, reproducible segmentations of MR images with TBI are crucial for quantitative analysis of recovery and treatment efficacy. However, this is a significant challenge due to severe anatomy changes caused by edema (swelling), bleeding, tissue deformation, skull fracture, and other effects related to head injury. In this paper, we introduce a multi-modal image segmentation framework for longitudinal TBI images. The framework is initialized through manual input of primary lesion sites at each time point, which are then refined by a joint approach composed of Bayesian segmentation and construction of a personalized atlas. The personalized atlas construction estimates the average of the posteriors of the Bayesian segmentation at each time point and warps the average back to each time point to provide the updated priors for Bayesian segmentation. The difference between our approach and segmenting longitudinal images independently is that we use the information from all time points to improve the segmentations. Given a manual initialization, our framework automatically segments healthy structures (white matter, grey matter, cerebrospinal fluid) as well as different lesions such as hemorrhagic lesions and edema. Our framework can handle different sets of modalities at each time point, which provides flexibility in analyzing clinical scans. We show results on three subjects with acute baseline scans and chronic follow-up scans. The results demonstrate that joint analysis of all the points yields improved segmentation compared to independent analysis of the two time points.

    Original languageEnglish (US)
    Title of host publicationMedical Imaging 2012
    Subtitle of host publicationImage Processing
    DOIs
    StatePublished - 2012
    EventMedical Imaging 2012: Image Processing - San Diego, CA, United States
    Duration: Feb 6 2012Feb 9 2012

    Publication series

    NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
    Volume8314
    ISSN (Print)1605-7422

    Other

    OtherMedical Imaging 2012: Image Processing
    CountryUnited States
    CitySan Diego, CA
    Period2/6/122/9/12

    Keywords

    • Atlas formation
    • Image segmentation
    • Longitudinal analysis

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Biomaterials
    • Atomic and Molecular Physics, and Optics
    • Radiology Nuclear Medicine and imaging

    Fingerprint Dive into the research topics of 'A patient-specific segmentation framework for longitudinal MR images of traumatic brain injury'. Together they form a unique fingerprint.

    Cite this