The thinnest slice of 64-row spiral CT scanning can reach 0.64MM, which is the thinnest slice thickness in the world at present and improves the resolution of the image. Compared with 16 and 32-slice CT, 64-slice CT can make clinicians see more accurate details, with thinner slice thickness and lower radiation dose, and can "pull out" diseased blood vessels for observation, and can also "peel and remove bones", so that doctors can see lesions as small as 0.5 mm at a glance. 64-slice spiral CT is the most advanced instrument for diagnosing cardiovascular and cerebrovascular diseases in the world. Its unique non-invasive, efficient, accurate and three-dimensional medical imaging technology has great advantages in checking whether the artery is stenotic, bridging, stent shape and cardiac function analysis. It realizes the non-invasive examination of coronary artery and provides a safe, rapid and low-cost examination method for screening, general survey and diagnosis of coronary heart disease. In addition, 64-slice spiral CT can be used not only for morphological diagnosis, but also for functional imaging diagnosis, such as the application of cerebral perfusion imaging, which can display cerebral ischemic lesions at an early stage. Especially the scanning speed is fast. 64-slice spiral CT has unique advantages in emergency medicine and early diagnosis of pulmonary embolism. It can also be used to screen coronary heart disease, lung cancer and liver cirrhosis, and analyze benign and malignant tumors.