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• W2323200062 abstract "Automatic and reliable segmentation of the prostate is an important but difficult task for various clinical applications such as prostate cancer radiotherapy. The main challenges for accurate MR prostate localization lie in two aspects: (1) inhomogeneous and inconsistent appearance around prostate boundary, and (2) the large shape variation across different patients. To tackle these two problems, we propose a new deformable MR prostate segmentation method by unifying deep feature learning with the sparse patch matching. First, instead of directly using handcrafted features, we propose to learn the latent feature representation from prostate MR images by the stacked sparse auto-encoder (SSAE). Since the deep learning algorithm learns the feature hierarchy from the data, the learned features are often more concise and effective than the handcrafted features in describing the underlying data. To improve the discriminability of learned features, we further refine the feature representation in a supervised fashion. Second, based on the learned features, a sparse patch matching method is proposed to infer a prostate likelihood map by transferring the prostate labels from multiple atlases to the new prostate MR image. Finally, a deformable segmentation is used to integrate a sparse shape model with the prostate likelihood map for achieving the final segmentation. The proposed method has been extensively evaluated on the dataset that contains 66 T2-wighted prostate MR images. Experimental results show that the deep-learned features are more effective than the handcrafted features in guiding MR prostate segmentation. Moreover, our method shows superior performance than other state-of-the-art segmentation methods." @default.
• W2323200062 created "2016-06-24" @default.
• W2323200062 creator A5000937401 @default.
• W2323200062 creator A5068139862 @default.
• W2323200062 creator A5075338951 @default.
• W2323200062 date "2016-04-01" @default.
• W2323200062 modified "2023-10-02" @default.
• W2323200062 title "Deformable MR Prostate Segmentation via Deep Feature Learning and Sparse Patch Matching" @default.
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• W2323200062 doi "https://doi.org/10.1109/tmi.2015.2508280" @default.
• W2323200062 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5002995" @default.
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• W2323200062 hasPublicationYear "2016" @default.
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