Graph-based label propagation in fetal brain MR images

Koch LM, Wright R, Vatansever D, Kyriakopoulou V, Malamateniou C, Patkee PA, Rutherford M, Hajnal JV, Aljabar P, Rueckert D (2014)

Publication Type: Book chapter / Article in edited volumes

Publication year: 2014

Journal

Lecture Notes in Computer Science Springer Verlag

Publisher: Springer Verlag

Series: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Book Volume: 8679

Pages Range: 9-16

DOI: 10.1007/978-3-319-10581-9_2

Abstract

Segmentation of neonatal and fetal brain MR images is a challenging task due to vast differences in shape and appearance across age and across subjects. Expert priors for atlas-based segmentation are often only available for a subset of the population, leading to a reduction in accuracy for images dissimilar from the atlas set. To alleviate the effects of limited prior information on atlas-based segmentation, we present a novel semi-supervised learning framework where labels are propagated among both atlas and test images while modelling the confidence of propagated information. The method relies on a voxel-wise graph interconnecting similar regions in all images based on a patch similarity measure. By iteratively allowing information flow from voxels with high confidence to voxels with lower confidence, segmentations in test images with low similarity to the atlas set can be improved. The method was evaluated on 70 fetal brain MR images of subjects at 22–38 weeks gestational age. Particularly for test populations dissimilar from the atlas population, the proposed method outperformed state-of-the-art patchbased segmentation.

Involved external institutions

Imperial College London / The Imperial College of Science, Technology and Medicine GB United Kingdom (GB) King’s College London GB United Kingdom (GB)

How to cite

APA:

Koch, L.M., Wright, R., Vatansever, D., Kyriakopoulou, V., Malamateniou, C., Patkee, P.A.,... Rueckert, D. (2014). Graph-based label propagation in fetal brain MR images. In (pp. 9-16). Springer Verlag.

MLA:

Koch, Lisa M., et al. "Graph-based label propagation in fetal brain MR images." Springer Verlag, 2014. 9-16.

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