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Doctor insights on: Thallium Stress Test

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Dr. Heidi Fowler
46 Doctors shared insights

Thallium Stress Test (Overview)

A radioactive isotope of thallium, often 201, is injected iv. Heart muscle cells pump some of the radioactive thallium inside; less if blood flow past the cells is limited. Thus cells (or scar tissue) with low blood flow intake less thallium & emit less radiation. A gamma camera detects some of the radiation which exits the body. Only severe, not mild, artery disease complications can be detected.


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What is a thallium stress test procedure?

What is a thallium stress test procedure?

Checks heart functio: Thallium is a radioactive (minimally) isotope that is used to study the pumping capability of the heart, usually after heart attack or prior to surgery in someone with cardiac disease. Sometimes it's done simply to ensure proper cardiac capability in someone with risk factors or prior heart issues. It involves mild to increasing exercise to "stress" the heart and assess function under effort! ...Read more

Dr. Heidi Fowler
46 Doctors shared insights

Thallium Stress Test (Overview)

A radioactive isotope of thallium, often 201, is injected iv. Heart muscle cells pump some of the radioactive thallium inside; less if blood flow past the cells is limited. Thus cells (or scar tissue) with low blood flow intake less thallium & emit less radiation. A gamma camera detects some of the radiation which exits the body. Only severe, not mild, artery disease complications can be detected.


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Is the thallium stress test a risky thing to do?

Is the thallium stress test a risky thing to do?

Not generally: Some people are concerned that stressing a heart that does have coronary artery disease can cause heart attack. Fortunately never seems to be the case. Can get arrythmia from some meds, but complications also quite rare. Usually benefit far outweighs risk. ...Read more

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Overcoming Anxiety and Stress (Checklist)

As your stress or anxiety level rises, stop what you are doing
Once
Ask yourself if you are expecting something bad to happen
Once
Slowly inhale through your nose, and exhale through your mouth
Once
While you are breathing, remind yourself that you can handle feeling distressed
Once
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Is thallium stress test a very common procedure?

Is thallium stress test a very common procedure?

Very common: A thallium stress test is an extremely common procedure that allows the doctor to monitor the electrical activity in your heart while you walk on a treadmill with a continuous ekg (usually takes 10min) and to take "before and after pics" of your heart. Pictures are taken before and after walking to see if there is an area of low blood flow, which suggests blockage in a coronary artery. ...Read more

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What do I need to bring along to do the thallium stress test?

What do I need to bring along to do the thallium stress test?

Just you: Wear comfortable clothes and walking shoes (assuming it is an "exercise" not "chemical" stress). Don't eat or drink anything after midnight. Don't smoke for at least 4 hours before the test, and ask your doctor if you should adjust your morning medications (particularly Insulin if diabetic or a beta blocker - which is a blood pressure medication). ...Read more

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Managing Post-Traumatic Stress Disorder (Checklist)

Find a therapist who specializes in PTSD
Once
Join a support group with others who are dealing with PTSD
Once
Consider eye movement desensitization and reprocessing as a form of treatment, and discuss it with a therapist
Once
Learn relaxation techniques that will help you when flashbacks occur
Once
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What is the definition or description of: thallium stress test?

What is the definition or description of: thallium stress test?

Stress with Thallium: A radioactive isotope of thallium, often 201, is injected iv. Heart muscle cells pump some of the radioactive thallium inside; less if blood flow past the cells is limited. Thus cells (or scar tissue) with low blood flow intake less thallium & emit less radiation. A gamma camera detects some of the radiation which exits the body. Only severe, not mild, artery disease complications can be detected. ...Read more

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Having thallium stress test on heart, is it painful?

Having thallium stress test on heart, is it painful?

No: I have had many of these and other than fatigue on the treadmill, no problems. ...Read more

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Can my regular doctor do the thallium stress test in his clinic?

Probably not: Thallium stress test are usually done in a hospital's nuclear medicine division of the radiology department. Your regular doctor or cardiologist may be present when the test is performed, especially to monitor the patient. ...Read more

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Is a thallium stress test optional or mandatory before getting a stent in your heart?

Is a thallium stress test optional or mandatory before getting a stent in your heart?

Depends on symptoms: Acute coronary syndromes, complete w chest pain, ECG changes, and biomarker elevation are an indication for catheterization and possible stent implantation without additional testing. Short of acute symptoms, noninvasive testing (such as myocardial perfusion imaging, or stress echocardiography) help define a clinical need to assess for a physiologically significant coronary obstruction. ...Read more

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Which test is more accurate a cardiac petscan or thallium stress test? Why is one or the other chosen by cardiologists?

PET over thallium: Both tests use nuclear isotopes. The isotope used in pet scans has better visualization/resolution characteristics than thallium which is a spect study (like technetium).
Tissue viability is also superior in pet as compared to thallium.
The problem is usually that pet is done in fewer cardiology systems than spect (technetium or thallium)
of the spect scans, technetium is superior to thallium. ...Read more

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After angiogram, bypass surgery was suggested as 75% blockage in all arteries. Another doctor suggested thallium stress test. Will it help?

CAD stress test: It may or may not depending on symptoms and a number of variables including specific sites of stenoses ...Read more

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Thallium dipyridamole stress test with the radioactive chemical given is it true that it is dangerous to be near babies and children after procedure?

Thallium dipyridamole stress test with the radioactive chemical given is it true that it is dangerous to be near babies and children after procedure?

No: The amount of thallium given during a stress test is between 20 and 30 times less than the level where you are releasing enough radiation to be of concern. The half life of thallium is short. To be extra careful I wouldn't be worried after 24 hrs at most. ...Read more

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What is the risk of the thallium for persantine stress test?

What is the risk of the thallium for persantine stress test?

None: Thallium provides no risk to any human as it is non-toxic and is eliminated from the body within a few hours after the test is completed. It is simply a tracer chemical for blood flow. ...Read more

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What is rest stress thallium test?

What is rest stress thallium test?

Heart Disease Test: Thallium stress test is a nuclear imaging method that shows how well blood flows into the heart muscle, both at rest and during activity. Normal blood flow would "light up" on images. The stress portion is either through exercise, like on a treadmill, or a drug can be injected for those who can't tolerate regular exercise. This causes the heart to behave as if the subject were exercising. ...Read more

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What's stress thallium test?

What's stress thallium test?

Shows blood flow: Thallium is tagged to red blood cells. The heart is stressed (increase cardiac outpu), then nuclear scanning helps show if there is equal blood flow to all parts of the heart, by detecting the radioactive thallium. ...Read more

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What is the 'stress thallium test'?

What is the 'stress thallium test'?

See below: A stress thallium test uses a nuclear tracer to visualize blood flow during exercise or chemical stress in a person unable to exercise. The purpose of the test is to uncover artery narrowings that can impede flow when an increased demand for flow is required as in"stress." the test can also give information about the heart's pumping power called the ejection fraction. ...Read more

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I have undergone cabg n after 2 yrs angiolpasty with 1 stem. Know again after 2 years facing disconfort n advise stress thallium test. Should I go for?

I have undergone cabg n after 2 yrs angiolpasty with 1 stem. Know again after 2 years facing disconfort n advise stress thallium test. Should I go for?

Yes: With known history of coronary artery disease and prior angioplasty and coronary bypass surgery, any new chest pain/discomfort should be evaluated and frequently a nuclear stress test can be helpful to figure out if a chest pain syndrome is related to coronary ischemia- "blockage" or obstructive narrowing of a coronary artery or CABG graft. Thallium or technetium based nuclear testing can be used ...Read more

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When should thallium be eliminated from your body after a stress test?

Long time: The journal of emergency medicine
volume 43, issue 6, pages e439-e442, december 2012
case report
this patient was twice detained by homeland security agents and searched after he activated radiation detectors at a seaport security checkpoint. The radioactive half-life of tl-201 is 73.1h, however, reported periods of extended personal radiation have been seen as far out as 61 days. ...Read more

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Tomorrow I'm getting a nuclear stress test w cardiolite. Worried about side effects and reaction to the thallium or whatever they use. Should I worry?

Tomorrow I'm getting a nuclear stress test w cardiolite. Worried about side effects and reaction to the thallium or whatever they use. Should I worry?

Isotopes quite safe: Dyes are not used during nuclear stress tests. Trace radioactive isotopes are but there are no significant reactions to these minute doses used considering the thousands of tests done around the globe daily unless one has a history of being allergic to the thallium or cardiolite. ...Read more

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What is the risk of the thallium injected during a persantine stress test?

What is the risk of the thallium injected during a persantine stress test?

Thallium: Thallium poisoning is extemely rare. Radioactive thallium used in the test is thallium 201 and is used in a small dose that dissipates with about a 69 to 73 hr halftime. The radiation is generally no problem unless it is additive in a person who has had lot of radiation exposure. ...Read more

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What do you recommend if I had 2 stress test done a exercise one and a thallium one on both my heart rate dropped wha could cause it?

What do you recommend if I had 2 stress test done a exercise one and a thallium one on both my heart rate dropped wha could cause it?

Thallium?: You said "thallium" but perhaps you meant adenosine or lexiscan? - these two agents are used to perform a stress test in which you don't have to exercise, thus in contrast to your first one. Both agents can cause the heart rate to drop as a side effect which has no prognostic significance. ...Read more

Dr. Heidi Fowler
3,151 Doctors shared insights

Stress (Definition)

Stress affects most people in some way. Acute (sudden, short-term) stress leads to rapid changes throughout the body. Almost all body systems (the heart and blood vessels, immune system, lungs, digestive system, sensory organs, and brain) gear up to meet perceived danger. These stress responses could prove beneficial in a critical, life-or-death situation. Over time, however, repeated stressful situations put a strain on the body that may contribute to physical and psychological problems. Chronic (long-term) stress can have real health consequences and should be addressed like any other health concern. Fortunately, research is showing that lifestyle changes and stress-reduction techniques can help people learn ...Read more


Dr. Ronald Krauser
3 Doctors shared insights

Stress Test (Definition)

A stress test is a cardiac test which can include walking on a treadmill and monitoring your heart while you are walking. They can also inject you with a nuclear material and do a more comprehensive scan on your heart to check for blockage. They can also do a chemical stress test which omits the need to ...Read more