After having an angiogram, you need to pay attention to stop bleeding in time, drink more water and avoid strenuous exercise. 1. Stop bleeding in time: usually the needles used for imaging are relatively thick, and the wounds after imaging are large, so it is necessary to put more pressure on the wounds to avoid continuous bleeding. In case of interventional imaging, it is necessary to bandage the wound to stop bleeding. 2. Drink more water: as a large amount of contrast medium will be injected into the blood during the imaging, increasing water intake at this time will help to promote the circulation of body fluids, which will be conducive to the discharge of the contrast medium. 3. Avoid strenuous exercise: if the imaging is performed on the brain, heart and other areas with dense blood vessels, strenuous exercise may cause extravasation of contrast medium, so strenuous exercise should be avoided as much as possible. To summarize, patients should follow the doctor’s instructions because of the different parts and modes of imaging.