What happens during a MUGA scan
The MUGA scan has two parts. The nuclear medicine technologist will explain each part of the test to you and your child.
First part of a MUGA scan: drawing blood
The first part of the scan will take about 30 minutes. The technologist will use a needle to take a small amount of blood from your child. Usually, the technologist will leave an intravenous (IV) tube taped to your child's arm for the second part of the test. An IV is a narrow tube that gives liquids directly into your child's vein.
After the blood is taken, you and your child can leave the Nuclear Medicine room. The technologist will tell you what time to come back. While you are waiting, the technologist will mix a small amount of radioactive material into your child's blood for the second part of the test.
Second part of a MUGA test: putting blood and radioactive material back into the body
The second part of the MUGA test is usually one hour later.
The technologist will give your child's own blood back through the IV tube or a needle. This blood has a small amount of radioactive material mixed into it. It is safe and will not make your child feel sick or dizzy.
The technologist will then attach three electrodes to your child's chest. Electrodes are sticky pads that connect with wires to the electrocardiogram (ECG) machine. The ECG records your child's heartbeat while the Nuclear Medicine camera is taking pictures of your child's heart.
The test is safe and does not hurt. Your child will need to lie still for about 30 minutes. They can watch a movie while the pictures are taken.