Medical images like CT and MRI provide detailed information about the internal structure of the body, and identifying key anatomical structures from these images plays a crucial role in clinical workflows. Current methods treat it as a registration or key-point regression task, which has limitations in accurate matching and can only handle predefined landmarks. Recently, some methods have been introduced to address these limitations. One such method, called SAM, proposes using a dense self-supervised approach to learn a distinct embedding for each point on the CT image and achieving promising results. Nonetheless, SAM may still face difficulties when dealing with structures that have similar appearances but different semantic meanings or similar semantic meanings but different appearances. To overcome these limitations, we propose SAM++, a framework that simultaneously learns appearance and semantic embeddings with a novel fixed-points matching mechanism. We tested the SAM++ framework on two challenging tasks, demonstrating a significant improvement over the performance of SAM and outperforming other existing methods.

SAM++是一个能够在医学图像中学习外观和语义嵌入的框架，其固定点匹配机制能够克服原来方法中的一些限制，并取得了比现有方法更好的结果。

SAM++: 利用语义信息和结构推理增强解剖匹配