Atlas of Classifiers for Brain MRI Segmentation

  • Boris Kodner
  • Shiri Gordon
  • Jacob Goldberger
  • Tammy Riklin Raviv
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10541)

Abstract

We present a conceptually novel framework for brain tissue segmentation based on an Atlas of Classifiers (AoC). The AoC allows a statistical summary of the annotated datasets taking into account both the imaging data and the corresponding labels. It is therefore more informative than the classical probabilistic atlas and more economical than the popular multi-atlas approaches, which require large memory consumption and high computational complexity for each segmentation. Specifically, we consider an AoC as a spatial map of voxel-wise multinomial logistic regression (LR) functions learned from the labeled data. Upon convergence, the resulting fixed LR weights (a few for each voxel) represent the training dataset, which might be huge. Segmentation of a new image is therefore immediate and only requires the calculation of the LR outputs based on the respective voxel-wise features. Moreover, the AoC construction is independent of the test images, providing the flexibility to train it on the available labeled data and use it for the segmentation of images from different datasets and modalities.

The proposed method has been applied to publicly available datasets for the segmentation of brain MRI tissues and is shown to outreach commonly used methods. Promising results were obtained also for multi-modal, cross-modality MRI segmentation.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Boris Kodner
    • 1
    • 2
  • Shiri Gordon
    • 1
    • 2
  • Jacob Goldberger
    • 3
  • Tammy Riklin Raviv
    • 1
    • 2
  1. 1.Department of Electrical and Computer EngineeringBen-Gurion University of the NegevBeershebaIsrael
  2. 2.The Zlotowski Center for NeuroscienceBen-Gurion University of the NegevBeershebaIsrael
  3. 3.Faculty of EngineeringBar-Ilan UniversityRamat GanIsrael

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