Objective:To evaluate the clinical and research value ofanthropomorphic chest phantom from CT sectional anatomy and tissue equivalence of X-ray attenuation by comparing with normal adults.Methods:The Chinese anthropomorphic chest phantom(CDP-IC)and the normal adults were scanned with the same scanning parameters

according to the Sectional image and the CT value of the various tissues and organs to evaluate the Similarity of Anatomy and the tissue equivalence of X-ray attenuation respectively.Results:on anatomic morphology

the Chinese anthropomorphic chest phantom was basically similar to the normal adult;on tissue equivalence of X-ray attenuation

no significant difference of CT value were shown between the lung

heart and spine of phantom and human(P>0.05).The maximum deviation on the liver was 4.49%.The CT value error of each tissue and organ was less than 5%between phantom and human

which is reaching the standard of experiment.Conclusion:The Chinese anthropomorphic chest phantom can be used to study of low-dose CT based on objective evaluation criteria.