CT-enhanced scans of the liver are usually done as delayed scans, where contrast is injected for 10-30 minutes before CT imaging is done. It can identify neoplastic disease, such as hemangioma, where delayed scans show persistent contrast-filled changes, tumor staining-like changes, and hemangioma as a bright and distinct lesion compared to the liver parenchyma. Delayed scans of hepatocellular carcinoma are usually contrast contoured and show hypointense changes compared to the rest of the liver parenchyma. Other tumors are basically contoured changes, but only liver and hemangioma are more suitable for delayed scans. It is mainly used for the differential diagnosis of lesions.