The diagnostic accuracy of enhanced CT is about 90%. Enhanced CT is based on CT scanning and focuses on suspicious areas through intravenous injection of contrast agent, which can enhance the resolution and increase the diagnostic accuracy to a certain extent. Compared with CT plain scan, enhanced CT has enhanced effect on the display of tiny lesions, such as small liver cancer and small cysts. Through the use of contrast agent, enhanced CT can more intuitively and clearly observe the distribution of foci in various organs and tissues, which is conducive to improving the accuracy of various types of tumor diagnosis. Enhanced CT can be used for tumor localization, and puncture biopsy can be performed when necessary, combined with pathological examination to further clarify the nature of the lesion. Before performing enhanced CT, a contrast agent needs to be injected, and some people may be allergic to the contrast agent. Therefore, people with iodine allergy should avoid this type of examination to prevent danger.