TY - JOUR
T1 - Federated learning for prenatal detection of interrupted aortic arch using fetal ultrasound imaging
AU - Han, Jiancheng
AU - Wang, Heqing
AU - Feng, Yifan
AU - Yang, Qi
AU - Li, Jingtan
AU - Zhang, Haojie
AU - He, Yihua
AU - Liu, Jiang
AU - Nakamura, Toru
AU - Cao, Yang
AU - Sun, Naidi
AU - Qian, Kun
AU - Hu, Bin
AU - Gao, Xinru
AU - Xia, Yan
AU - Weng, Zongjie
AU - Schuller, Björn W.
AU - Yamamoto, Yoshiharu
N1 - Publisher Copyright:
© 2026
PY - 2026/6/15
Y1 - 2026/6/15
N2 - This study presents the first application of federated learning (FL) for prenatal detection of Interrupted Aortic Arch (IAA) using fetal ultrasound images. To address the challenges of data scarcity, privacy constraints, and inter-institutional variability, we develop a federated learning IAA detection method and systematically evaluate three representative strategies (FedAvg, FedProx, and FedBABU) across five clinical centres. Results show that FL improves model performance over local training in recall and F1-score in data-scarce centres. Among FL algorithms, FedAvg and FedProx consistently outperform FedBABU in stability and generalisation. Among the three CNN architectures compared — ResNet-50, EfficientNet-B3, and DenseNet-121 — DenseNet-121 demonstrates superior overall performance, particularly in non-independent and identically distributed (Non-IID) scenarios. Our framework demonstrates the feasibility of collaborative AI for rare disease detection without data sharing, laying the foundation for scalable, real-world prenatal screening of congenital heart defects.
AB - This study presents the first application of federated learning (FL) for prenatal detection of Interrupted Aortic Arch (IAA) using fetal ultrasound images. To address the challenges of data scarcity, privacy constraints, and inter-institutional variability, we develop a federated learning IAA detection method and systematically evaluate three representative strategies (FedAvg, FedProx, and FedBABU) across five clinical centres. Results show that FL improves model performance over local training in recall and F1-score in data-scarce centres. Among FL algorithms, FedAvg and FedProx consistently outperform FedBABU in stability and generalisation. Among the three CNN architectures compared — ResNet-50, EfficientNet-B3, and DenseNet-121 — DenseNet-121 demonstrates superior overall performance, particularly in non-independent and identically distributed (Non-IID) scenarios. Our framework demonstrates the feasibility of collaborative AI for rare disease detection without data sharing, laying the foundation for scalable, real-world prenatal screening of congenital heart defects.
KW - Federated learning
KW - Fetal ultrasound imaging
KW - Interrupted aortic arch
UR - https://www.scopus.com/pages/publications/105029520430
U2 - 10.1016/j.bspc.2026.109795
DO - 10.1016/j.bspc.2026.109795
M3 - Article
AN - SCOPUS:105029520430
SN - 1746-8094
VL - 119
JO - Biomedical Signal Processing and Control
JF - Biomedical Signal Processing and Control
M1 - 109795
ER -