CT imaging method and system

The embodiment of the invention provides a CT imaging method and system, and the method comprises the steps: obtaining the scanning data of a target object; performing data preprocessing on the scanning data, and determining preprocessed scanning data; performing base material decomposition on the preprocessed scanning data to obtain base material data; performing data post-processing based on the base material data, and determining post-processed base material data; and reconstructing and generating a target image based on the post-processed base material data. 本说明书实施例提供一种CT成像方法和系统，其中，该方法包括：获取目标对象的扫描数据；对所述扫描数据进行数据预处理，确定预处理后扫描数据；对所述预处理后扫描数据进行基物质分解，获取基物质数据；基于所述基物质数据进行数据后处理，确定后处理后基物质数据；基于所述后处理后基物质数据，重建生成目标图像。