Due to imaging artifacts and low signal-to-noise ratio in ultrasound images, automatic bone surface segmentation networks often produce fragmented predictions that can hinder the success of ultrasound (US)-guided computer-assisted surgical procedures. Existing pixel-wise predictions often fail to capture the accurate topology of bone tissues due to a lack of supervision to enforce connectivity. In this work, we propose an orientation-guided graph convolutional network to improve connectivity while segmenting the bone surface. We also propose an additional supervision on the orientation of the bone surface to further impose connectivity. We validated our approach on 1042 in vivo US scans of femur, knee, spine, and distal radius. Our approach improves over the state-of-the-art methods by 5.01% in connectivity metric.
CITATION STYLE
Rahman, A., Bandara, W. G. C., Valanarasu, J. M. J., Hacihaliloglu, I., & Patel, V. M. (2022). Orientation-Guided Graph Convolutional Network for Bone Surface Segmentation. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 13435 LNCS, pp. 412–421). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-3-031-16443-9_40
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