一个结合损失驱动的框架,用于自动化状腺细分在头部和部计算机断层扫描
Aryan Tyagi1, Anuj Kumar2, Sandeep Singh3
1University School of Automation and Robotics, Guru Gobind Singh Indraprastha University, New Delhi, India.
Journal of medical physics
|October 30, 2025
概括
本研究介绍了使用3D U-Net进行精确腺细分的深度学习框架. 新的组合损失函数增强了解剖学精度,并解决了放射治疗规划中的类失衡.
科学领域:
- 医疗成像医学成像
- 人工智能在医学中的应用
- 放射治疗规划 放射治疗规划
背景情况:
- 精确的腺细分对于放射治疗计划至关重要,以尽量减少辐射毒性.
- 现有的细分方法经常与解剖学准确性和阶级不平衡作斗争.
- 深度学习为自动化和精确的医疗图像细分提供了一个有希望的途径.
研究的目的:
- 开发和评估一个深度学习框架,用于自动腺细分.
- 研究3D U-Net和注意力增强3D U-Net架构的有效性.
- 评估一种新的组合损失函数,将修改的子得分系数 (mDSC) 和焦点损失 (FL) 整合起来,以改善细分.
主要方法:
- 使用了379个无对比头部CT扫描数据集与专家验证的轮.
- 使用TensorFlow实现了剩余的3D U-Net和注意力增强的3D U-Net模型.
- 用组合损失函数 (0.7 mDSC,0.3 FL) 训练网络,并使用 DSC,IoU 和精度进行评估.
主要成果:
- 带有组合损失的3D U-Net获得了0.8835 (左) 和0.8709 (右) 的子中位数.
- 平均IOU值为0.7672 (左) 和0.7358 (右),表明了强的细分表现.
- 布兰德-阿尔特曼分析证实变化减少和协议改善,证明了稳定性.
结论:
- 综合损失函数显著提高了3D U-Net细分性能,稳定性和空间精度.
- 拟议的框架证明了自动化和可重复的状腺划界的临床可行性.
- 这种深度学习方法有可能优化放射治疗的规划并减少副作用.
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