引入轮廓监督的动态规划CT图像肺结节分割算法

摘要

目的:提出一种基于轮廓监督的动态规划方法,实现对CT图像肺结节的分割.方法:在基于动态规划的轮廓跟踪过程中,引入轮廓监督机制,对比改进以前常见的算法,减少了周围组织和对比度不足对分割精度的影响.结果:轮廓监督的引入,有效地掩蔽了肺结节周围组织,避免了轮廓偏离.结论:改进的算法提高了肺结节分割准确性,且具有更好的鲁棒性.%Objective To put forward an improved dynamic programming method based on contour supervision. Methods In the process of contour tracing based on dynamic programming, the contour supervision mechanism was introduced to avoid the contour departure, which was caused by the low contrast and the influence of surrounding tissues. Results The introduction of contour supervision could effectively mask the surrounding tissue and avoid the contour departure. Conclusion The proposed algorithm improves the segmentation accuracy and is more robust than the conventional methods.