Nuclear medicine 99mTc-MIBI myocardial perfusion imaging has an important role in the diagnosis and treatment guidance of myocardial ischemia and myocardial infarction. When myocardial perfusion imaging, the doctor explained that 20 minutes after injection of the imaging agent 99mTc-MIBI, two fried eggs should be eaten for the following reasons: 1. 99mTc-MIBI is mainly taken up by the cell membrane of cardiomyocytes after intravenous injection, and its uptake is positive with the local myocardial perfusion. 99mTc-MIBI binds firmly to the myocardial cell membrane, and the part that is not taken up 99mTc-MIBI is excreted via the liver and bile to the digestive tract. 2, If normal diet, the bile in the gallbladder has been emptied and the oddi’s sphincter from the bile duct to the intestine is in a contracted state, the drug in the liver cannot drain smoothly into the intestine, inhibiting the secretion of the drug by the liver, and the images of the liver and gallbladder may interfere with the myocardial images. 3. After the patient fasted for 4-6h, the gallbladder was filled with concentrated bile, and a fatty meal (2 fried eggs or half a pound of milk, etc.) was given orally 20 minutes after the intravenous injection of 99mTc-MIBI. The gallbladder is stimulated by fatty food and the bile is emptied and enters the intestine to help digestion; at the same time, the drug injected intravenously is smoothly discharged to the intestine, and the hepatobiliary radioactive image is diminished, which greatly reduces the interference with the myocardial image. 4.Fat meal is usually 2 fried eggs (you can put salt, it will not affect the test results) or half a pound of whole milk. For those who are allergic to eggs or intolerant to milk can choose other fatty meals, such as doughnuts. For patients with various causes of slow peristalsis, you can eat both of these foods together and increase your movement slightly after the drug injection to speed up excretion depending on the severity of your condition. For patients with limited activity after catheterization, the imaging can be delayed and satisfactory results can be achieved.