一、问题的提出随着科学技术的发展和人民生活水平的不断提高,我国自不同的国家引进了数量相当可观的X—CT。对医学影象学起到了一定的促进作用。然而影响CT图象质量的三个基本因素之一——空间分辨率,则很少有人去研究,尤其是测定设备。据有关领导赴日考查得知,只有 First, the issue raised With the development of science and technology and people’s living standards continue to improve, our country introduced a considerable number of X-CT from different countries. Medical imaging played a role in promoting. However, one of the three basic factors that affect the quality of CT images, the spatial resolution, is rarely studied, especially in the measurement of equipment. According to the relevant leaders to go to Japan to test that only