以边界意识和差异为指导的动态伪标签与一致性学习用于半监督的3D TOF-MRA脑血管细分的半监督3D TOF-MRA脑血管细分
Nazik Mohamad Ahmed Elsayed1, Jiarun Liu2, Cheng Li3
1Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China, Shenzhen, 518055, CHINA.
Physics in medicine and biology
|January 20, 2026
概括
这项研究介绍了BDD-CL,这是一个新的框架,用于在3D TOF-MRA扫描中进行半监督的大脑血管细分. 该方法提高了细分复杂血管结构的准确性和效率,有助于临床诊断.
科学领域:
- 医疗成像医学成像
- 神经科学是一个神经科学.
- 计算机视觉 计算机视觉
背景情况:
- 脑血管疾病对全球健康构成重大风险,需要准确的诊断工具.
- 在飞行时间磁共振血管学 (TOF-MRA) 中精确细分脑血管结构对于诊断和治疗规划至关重要.
- 目前的细分方法面临着由于解剖学变异性和有限的注释数据的挑战.
研究的目的:
- 在3D TOF-MRA中开发一个半监督的框架,用于精确的脑血管细分.
- 为了解决容器形态变异性和注释稀缺性的局限性.
- 提高大脑血管细分的效率和可靠性,用于临床应用.
主要方法:
- 拟议的BDD-CL (边界意识和差异引导的动态伪标签一致性学习) 框架.
- 整合了一个边界增强 (BE) 模块,用于使用形状约束来改进船舶边界划分.
- 集成了一个形状意识差异 (SAD) 模块,通过完善预测不一致性来提高复杂形态的稳定性.
- 利用动态伪标签选择 (DPS) 机制进行自适应性伪标签生成,优化标签效率并减轻错误传播.
主要成果:
- 与七种最先进的半监督方法相比,BDD-CL表现优越.
- 对COSTA和IXI数据集的定量和质量评估证实了该框架的有效性.
- 该方法在脑血管细分精度上取得了显著的改进.
结论:
- 在临床实践中,BDD-CL框架显示了对标签效率高和可靠的大脑血管细分的强大潜力.
- 拟议的方法为克服TOF-MRA细分方面的挑战提供了一个有希望的解决方案.
- 这项研究有助于推进脑血管结构的自动化分析.
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