CT image evaluation apparatus and CT image evaluation method

摘要

The invention provides a CT image evaluation device and a CT image evaluation method. The quality of a CT image can be evaluated objectively by using a known reference object device arranged in a scanning region, and reconstruction parameters for CT image reconstruction are set objectively. The CT image evaluation device comprises a CT image input unit used for inputting a CT image at least including a reference object region, an evaluation index calculation unit used for calculating evaluation indexes for CT image evaluation according to reconstruction data of the reference object region in the CT image and known CT data of the reference object device, and a CT image evaluation unit used for evaluating the CT image according to the evaluation indexes. In addition, the CT image evaluation device may also comprise a reconstruction parameter determining unit used for doing statistical analysis on the optimal values of the evaluation indexes, and determining the optimal reconstruction parameters for CT image reconstruction based on the corresponding relationship between the evaluation indexes and the reconstruction parameters.