Effective 3D humerus and scapula extraction using low-contrast and high-shape-variability MR data

Xiaoxiao He; Chaowei Tan; Yuting Qiao; Virak Tan; Dimitris Metaxas; Kang Li

doi:10.1117/12.2513107

15 March 2019 Effective 3D humerus and scapula extraction using low-contrast and high-shape-variability MR data

Xiaoxiao He, Chaowei Tan, Yuting Qiao, Virak Tan, Dimitris Metaxas, Kang Li

Proceedings Volume 10953, Medical Imaging 2019: Biomedical Applications in Molecular, Structural, and Functional Imaging; 109530O (2019) https://doi.org/10.1117/12.2513107
Event: SPIE Medical Imaging, 2019, San Diego, California, United States

Abstract

For the initial shoulder preoperative diagnosis, it is essential to obtain a three-dimensional (3D) bone mask from medical images, e.g., magnetic resonance (MR). However, obtaining high-resolution and dense medical scans is both costly and time-consuming. In addition, the imaging parameters for each 3D scan may vary from time to time and thus increase the variance between images. Therefore, it is practical to consider the bone extraction on low-resolution data which may influence imaging contrast and make the segmentation work difficult. In this paper, we present a joint segmentation for the humerus and scapula bones on a small dataset with low-contrast and high-shape-variability 3D MR images. The proposed network has a deep end-to-end architecture to obtain the initial 3D bone masks. Because the existing scarce and inaccurate human-labeled ground truth, we design a self-reinforced learning strategy to increase performance. By comparing with the non-reinforced segmentation and a classical multi-atlas method with joint label fusion, the proposed approach obtains better results.

Conference Presentation

Citation Download Citation

Xiaoxiao He, Chaowei Tan, Yuting Qiao, Virak Tan, Dimitris Metaxas, and Kang Li "Effective 3D humerus and scapula extraction using low-contrast and high-shape-variability MR data", Proc. SPIE 10953, Medical Imaging 2019: Biomedical Applications in Molecular, Structural, and Functional Imaging, 109530O (15 March 2019); https://doi.org/10.1117/12.2513107

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