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Erschienen in: International Journal of Computer Assisted Radiology and Surgery 5/2019

11.03.2019 | Original Article

Unifying the seeds auto-generation (SAGE) with knee cartilage segmentation framework: data from the osteoarthritis initiative

verfasst von: Hong-Seng Gan, Khairil Amir Sayuti, Muhammad Hanif Ramlee, Yeng-Seng Lee, Wan Mahani Hafizah Wan Mahmud, Ahmad Helmy Abdul Karim

Erschienen in: International Journal of Computer Assisted Radiology and Surgery | Ausgabe 5/2019

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Abstract

Purpose

Manual segmentation is sensitive to operator bias, while semiautomatic random walks segmentation offers an intuitive approach to understand the user knowledge at the expense of large amount of user input. In this paper, we propose a novel random walks seed auto-generation (SAGE) hybrid model that is robust to interobserver error and intensive user intervention.

Methods

Knee image is first oversegmented to produce homogeneous superpixels. Then, a ranking model is developed to rank the superpixels according to their affinities to standard priors, wherein background superpixels would have lower ranking values. Finally, seed labels are generated on the background superpixel using Fuzzy C-Means method.

Results

SAGE has achieved better interobserver DSCs of 0.94 ± 0.029 and 0.93 ± 0.035 in healthy and OA knee segmentation, respectively. Good segmentation performance has been reported in femoral (Healthy: 0.94 ± 0.036 and OA: 0.93 ± 0.034), tibial (Healthy: 0.91 ± 0.079 and OA: 0.88 ± 0.095) and patellar (Healthy: 0.88 ± 0.10 and OA: 0.84 ± 0.094) cartilage segmentation. Besides, SAGE has demonstrated greater mean readers’ time of 80 ± 19 s and 80 ± 27 s in healthy and OA knee segmentation, respectively.

Conclusions

SAGE enhances the efficiency of segmentation process and attains satisfactory segmentation performance compared to manual and random walks segmentation. Future works should validate SAGE on progressive image data cohort using OA biomarkers.
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Metadaten
Titel
Unifying the seeds auto-generation (SAGE) with knee cartilage segmentation framework: data from the osteoarthritis initiative
verfasst von
Hong-Seng Gan
Khairil Amir Sayuti
Muhammad Hanif Ramlee
Yeng-Seng Lee
Wan Mahani Hafizah Wan Mahmud
Ahmad Helmy Abdul Karim
Publikationsdatum
11.03.2019
Verlag
Springer International Publishing
Erschienen in
International Journal of Computer Assisted Radiology and Surgery / Ausgabe 5/2019
Print ISSN: 1861-6410
Elektronische ISSN: 1861-6429
DOI
https://doi.org/10.1007/s11548-019-01936-y

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