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MRI-based fetal gestational age estimation using a structure-aware self-supervised network

delete2026-09-21
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PRE
AI
甘
甘海涛 (Haitao Gan) *
Y
Yi Liu
Q
Qingsong Gao
夏尉 封面图
夏尉 (Wei Xia)
Y
Yu Guo
Z
Zhiwei Ye
Z
Zhi Yang
R
Ran Zhou
DOI:10.1007/s00330-026-12845-5delete
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摘要

摘要

En 中文
为开发一种利用全局边缘信息以减少胎儿脑部MRI孕周(GA)估计误差并提高临床可靠性的结构感知自监督深度学习模型。回顾性收集了207例单胎妊娠的1630张胎儿脑部冠状面T2加权MRI图像(平均孕周,30±8周;中位数,34周;范围,22–38周),采集时间为2019年1月至2023年7月。孕周根据末次月经和首次孕期超声确定,作为参考标准。受试者按患者水平随机分为训练集(80%)和独立测试集(20%)。模型在测试集上的性能通过平均绝对误差(MAE)和决定系数(R²)进行评估,95%置信区间通过自助法重采样获得。所提出的模型在常规临床MRI孕周估计中达到MAE为0.793周(95% CI,0.574–0.860)和R²为0.934(95% CI,0.918–0.967)。预测孕周与参考孕周显示出强烈的线性相关性(p<0.001)。所提出的结构感知自监督模型能够从胎儿脑部MRI中准确估计临床孕周。该方法可能补充某些病例中的常规孕周估算;在临床部署前需要进行前瞻性和多中心验证。问题:当中期至晚期妊娠的常规临床孕周估算方法不可靠时,胎儿脑部MRI能否提供准确的临床孕周估算?结果:在207例妊娠中,SSFN-Net在胎儿脑部MRI上实现了比现有深度学习基线更低的MAE(0.79周)和更高的R²。临床相关性:MRI衍生的孕周估算可能补充某些病例中的超声或末次月经日期(LMP)基础的临床孕周估算,为产前评估提供额外的定量参考。
Keyword:
Deep learning
Fetus
Gestational age
Magnetic resonance imaging

期刊

European Radiology 封面图
European Radiology
IF:
4.7
论文数:
1.8K
被引数:
3.9W

机构

T
tongji medical college
学者数:
2.4K
论文数: 481
被引数: 0
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