随着技术的不断发展，人们对医学检测客观性的要求越来越高，检测手段已从过去的人工主观检测逐步发展到今天的主观检测和客观检测指标相结合，特别是医学影像技术的出现，使疾病诊断更加客观、准确。目前，临床上广泛采用的医学影像技术主要有Ｘ射线成像、计算机断层扫描成像? With the continuous development of technology, people have become more and more demanding on objectivity of medical testing. The means of detection have been gradually developed from the subjective tests in the past to the subjective and objective test indexes of today, especially the emergence of medical imaging technology , So that the diagnosis of the disease more objective and accurate. At present, the widely used clinical medical imaging techniques are X-ray imaging, computed tomography imaging?