中文摘要：

相互作用深度效应是影响PET成像质量的重要因素。本文主要针对这一效应的各种校正方法进行综述,包括硬件设计和软件校正,比较各种方法的优缺点,并对其发展方向进行展望。

英文摘要：

Depth of interaction（DOI） is one of the most important factors which seriously deteriorate the image quality of PET.Methods of several DOI correction,including hardware correction and software correction strategies were described,and the advantages and disadvantages of these methods,as well as the future development of DOI-PET were also reviewed in this article.