After the imaging examination, it is recommended that patients should drink more water as appropriate, which can promote the excretion of contrast medium. For example, after cardiography, hepatography, tubography and other examinations, you can eat normally in your diet, and eat easy-to-digest and light food. The diet is adjusted depending on the test results. Cardiac imaging test found to have heart disease, eating a low-fat, low-salt diet, do not eat too much at each meal, avoid overeating, to reduce the burden on the heart. Liver imaging found abnormal and liver function has changed, diet should also pay attention to, eat light, easy to digest, not greasy food. In short, a healthy diet is beneficial to the health of the organism, and quitting smoking, quitting alcohol and living a regular life is the basic guarantee of health.