FUGC: Benchmarking Semi-Supervised Learning Methods for Cervical Segmentation

Jieyun Bai; Yitong Tang; Zihao Zhou; Mahdi Islam; Musarrat Tabassum; Enrique Almar-Munoz; Hongyu Liu; Hui Meng; Nianjiang Lv; Bo Deng; Yu Chen; Zilun Peng; Yusong Xiao; Li Xiao; Nam-Khanh Tran; Dac-Phu Phan-Le; Hai-Dang Nguyen; Xiao Liu; Jiale Hu; Mingxu Huang; Jitao Liang; Chaolu Feng; Xuezhi Zhang; Lyuyang Tong; Bo Du; Ha-Hieu Pham; Thanh-Huy Nguyen; Min Xu; Juntao Jiang; Jiangning Zhang; Yong Liu; Md. Kamrul Hasan; Jie Gan; Zhuonan Liang; Weidong Cai; Yuxin Huang; Gongning Luo; Mohammad Yaqub; Karim Lekadir

arXiv · 2601.15572

FUGC: Benchmarking Semi-Supervised Learning Methods for Cervical Segmentation

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Abstract

Accurate segmentation of cervical structures in transvaginal ultrasound (TVS) is critical for assessing the risk of spontaneous preterm birth (PTB), yet the scarcity of labeled data limits the performance of supervised learning approaches. This paper introduces the Fetal Ultrasound Grand Challenge (FUGC), the first benchmark for semi-supervised learning in cervical segmentation, hosted at ISBI 2025. FUGC provides a dataset of 890 TVS images, including 500 training images, 90 validation images, and 300 test images. Methods were evaluated using the Dice Similarity Coefficient (DSC), Hausdorff Distance (HD), and runtime (RT), with a weighted combination of 0.4/0.4/0.2. The challenge attracted 10 teams with 82 participants submitting innovative solutions. The best-performing methods for each individual metric achieved 90.26\% mDSC, 38.88 mHD, and 32.85 ms RT, respectively. FUGC establishes a standardized benchmark for cervical segmentation, demonstrates the efficacy of semi-supervised methods with limited labeled data, and provides a foundation for AI-assisted clinical PTB risk assessment.

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Jieyun Bai, Yitong Tang, Zihao Zhou, Mahdi Islam, Musarrat Tabassum, Enrique Almar-Munoz, Hongyu Liu, Hui Meng, Nianjiang Lv, Bo Deng, Yu Chen, Zilun Peng, Yusong Xiao, Li Xiao, Nam-Khanh Tran, Dac-Phu Phan-Le, Hai-Dang Nguyen, Xiao Liu, Jiale Hu, Mingxu Huang, Jitao Liang, Chaolu Feng, Xuezhi Zhang, Lyuyang Tong, Bo Du, Ha-Hieu Pham, Thanh-Huy Nguyen, Min Xu, Juntao Jiang, Jiangning Zhang, Yong Liu, Md. Kamrul Hasan, Jie Gan, Zhuonan Liang, Weidong Cai, Yuxin Huang, Gongning Luo, Mohammad Yaqub, Karim Lekadir. 2026-01-22. FUGC: Benchmarking Semi-Supervised Learning Methods for Cervical Segmentation. https://arxiv.org/abs/2601.15572

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