Quick Answer: How Long Does Radioactive Dye Stay In Your System?

How accurate is a nuclear stress test?

The test also has an estimated 85 percent accuracy rate in determining whether any of a patient’s major coronary vessels, namely the arteries supplying the heart with oxygen, blood and nutrients, is significantly blocked..

How long does a nuclear stress test take to complete?

It is also known at the thallium stress test, a myocardial perfusion scan, or a radionuclide test. The test can be done while the patient is resting or doing exercise. The radioactive substance that is injected into the patient is called a radionuclide. The test takes about 3 to 4 hours.

What should I avoid after a nuclear stress test?

Do not eat chocolate or drink coffee, tea, soda, colas or other caffeinated beverages such Mountain Dew or energy drinks. If you are unsure, do not drink it. See the table below for more details. The table below also has a list of medications containing caffeine.

Can nuclear medicine make you sick?

Are there side effects to nuclear medicine exams? Very few people experience side effects from a nuclear medicine exam. Allergic reactions are extremely rare. Any adverse reactions are usually mild, pass quickly, and need little or no medical treatment.

What are the after effects of a nuclear stress test?

As with any medical procedure, there is a risk of complications, including:Allergic reaction. Though rare, you could be allergic to the radioactive dye that’s injected during a nuclear stress test.Abnormal heart rhythms (arrhythmias). … Heart attack (myocardial infarction). … Dizziness or chest pain. … Low blood pressure.

Does a nuclear stress test hurt?

Injecting the radioactive tracer does not hurt. For the stress test you will have EKG leads placed on your chest and you will be monitored closely. You may walk on a treadmill, ride a bike or receive a medicine. All these will increase your heart rate to stress your heart.

How long does radionuclide stay in your system?

It has a short half-life (6 hours) and does not remain in the body or the environment for long. Half-lifeThe time required for half of the radioactive atoms present to decay or transform. Some radionuclides have half-lives of mere seconds, but others have half-lives of hundreds or millions of years.

How long are you radioactive after a bone scan?

Following up after a bone scan A bone scan doesn’t cause any side effects or complications. Most of the radioactive tracer is eliminated from your body within 24 hours. Small amounts may remain for as long as three days.

What happens after a nuclear stress test?

It is normal to feel short of breath, pressure in head chest or belly. The side effects go away within a couple of minutes. We can also give you a reversal medication, if needed, to take away the side effects. You will receive a second injection of the tracer so we can see the stress blood flow to your heart muscle.

What happens if you drink caffeine before a nuclear stress test?

Caffeine can inhibit the medication needed for the stress portion of the test to be effective. If you’ve consumed caffeine within 24 hours, we may have to reschedule your test.

Is it safe to be around someone who has had radiation?

With internal radiation, you may need to avoid touching the patient until the implant is removed or limit the time you spend very close to them. With systemic radiation therapy, you may also have to avoid the person’s bodily fluids for a few days after treatment.

Can you pass a nuclear stress test and still have blockage?

This severe narrowing is what causes the severe chest pain called angina. But normal results from a stress test do not rule out the possibility of a future heart attack. This is because a plaque can still rupture, form clots and block an artery. Heart attacks often result from these smaller blockages that rupture.

What are the warning signs of clogged arteries?

Do clogged arteries cause any symptoms?Chest pain.Shortness of breath.Heart palpitations.Weakness or dizziness.Nausea.Sweating.

Can echo detect heart blockage?

Your doctor might recommend a stress echocardiogram to check for coronary artery problems. However, an echocardiogram can’t provide information about any blockages in the heart’s arteries.

What does a hot spot on a bone scan mean?

The areas where the radionuclide collects are called “hot spots,” and may indicate the presence of conditions such as arthritis , malignant (cancerous) bone tumors , metastatic bone cancer (cancer which has spread from another site, such as the lungs), bone infections , bone trauma not seen on ordinary X-rays, and …

Can you drive yourself home after a nuclear stress test?

The nurse will help you with them after you are awake. You will not be allowed to eat or drink until the medicine used to numb your throat wears off. This usually takes 30 to 60 minutes. You may not drive yourself home after your test.

Does an EKG show a past heart attack?

An ECG can show evidence of a previous heart attack or one that’s in progress. The patterns on the ECG may indicate which part of your heart has been damaged, as well as the extent of the damage. Inadequate blood and oxygen supply to the heart.

Do you have to take your clothes off for a bone scan?

No special preparations are needed. You may be able to remain fully clothed, depending on the area of your body being scanned. But you’ll need to remove any clothes that have metal fasteners, such as zips, hooks or buckles. In some cases, you may need to wear a gown.