After the imaging examination, it is recommended that the patient should drink more water as appropriate, which can promote the excretion of contrast medium. For example, after cardiac imaging, liver imaging, tubal imaging, etc., the patient can have normal diet and eat light food that is easy to digest. 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.