![]() ![]() The radiology technician inserts an intravenous line (IV) into a vein so that they can inject the radioactive dye into your arm. Small, sticky discs called electrodes are placed onto your chest to record the scan. This medication slows down your heart so that clearer pictures can be taken. You may be given a beta-blocker before the scan. The levels of radiation are considered safe for adults - there have been no documented side effects from low levels of radiation - but not for a developing fetus.Ī heart CT scan is performed in a hospital’s radiology department or a clinic that specializes in diagnostic procedures. While typically harmless, this is an important issue for women who are pregnant or could be pregnant. RadiationĪs with any X-ray, there’s some exposure to radiation. ![]() There may be medication available to help you avoid reactions. Talk with your doctor if you feel you’re at risk of a reaction. Other risk factors include dehydration, taking medications such as nonsteroidal anti-inflammatory drugs (NSAIDs), and certain health conditions, such as sickle cell anemia or thyroid disorder. You’re at greater risk of an allergic or adverse reaction to iodine-based material if you’ve had a previous reaction or if you’ve received a large amount of contrast material within the past 24 hours. Severe reactions can include difficulty breathing and cardiac arrest.Moderate reactions can include severe skin rash or hives.Mild reactions to the contrast material include itching and skin flushing.You should let your doctor know if you experience any of the following symptoms: However, newer dyes carry much less risk to the kidneys.Īllergic or adverse reactions to iodine-based materials are categorized as mild, moderate, and severe. If your kidneys have been affected by disease or infection, such as diabetes, you may need to drink extra fluids after the test to help your kidneys remove the dye. ![]() This iodine is later flushed from the body by the kidneys. Most of the contrast material, sometimes referred to as dye, used for CT scans contains iodine.
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