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Doctor insights on: Lung Perfusion Scan

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Which procedure does a lung perfusion scan involve?

Which procedure does a lung perfusion scan involve?

Inject radioactive: A perfusion lung scan is done by injectecting a low-dose radioactive tracer into a vein and taking images showing where blood flow is going in the lungs. It is used to diagnose pulmonary embolism (blood clot to the lungs). The test is safe and generally free of any side effects. It is used less often now than ct angiogram, but is safer and involves less radiation exposure. ...Read more

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Lung (Definition)

Deoxygenated blood enters the lungs from the right side of the heart and travels to the lungs. When you inspire, oxygen flows into the lungs, transverses the capilliares and attaches to hemoglobin down a gradient. At the same time, co2 diffuses into the capilaries and is expelled with exhalation. Oxygen rich blood then flows to the left side of the heart and into the ...Read more


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What are the side effects of lung perfusion scan?

What are the side effects of lung perfusion scan?

Usually none: The dose of radioactivity given is small, and the test is considered safe and harmless. If a woman is pregnant, the use of any radioactive material must be carefully weighed as to potential benefits vs risks to the fetus. ...Read more

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What person needs a lung ventilation/perfusion scan?

What person needs a lung ventilation/perfusion scan?

: Folks with a suspicion for blood clot in the lung. This may be due to spells of breathlessness or chest pain or both. More common if there is blood clots in the leg (phlebitis). ...Read more

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What does blood clot in the lungs (pulmonary embolus) show on ventilation perfusion scan?

What does blood clot in the lungs (pulmonary embolus) show on ventilation perfusion scan?

Lack of blood flow: A ventilation perfusion scan is a test for a blood clot in the lungs, or pulmonary embolism. If there is a blood clot, an area of the lung will not be perfused, but will be ventilated, and therefore a mismatch will be seen. ...Read more

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Dr order pulm. Ventilation/perfusion scan for tachardyia and sob. Have normal chest x-ray, ekg, pulmonary test and blood work. Odds it's an embolism?

Odds don't count: Stastitics are only guidelines and don't apply to individual cases. A lung scan (v/q) is accurate if it is considered high probability or normal. The " gold standard" is computerized angiogram of the chest which is very accurate both to diagnose or exclude pulmonary embolism. Talk to your md. If you have no medical contraindications, i would prefer the ct angiogram. ...Read more

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What is the function of a vent perfusion scan?

Dx Pulmonary Embolus: A ventillation perfusion lung scan is a nuclear test used to diagnose a blood clot to the lung or pulmonary embolus. Medication is injected into your vein and you also breath a medication into the lung to look for a mismatch on a nuclear imaging camera which would suggest a pulmonary embolus. ...Read more

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How is a cardiac perfusion scan used?

How is a cardiac perfusion scan used?

Find Bockages: Myocardial perfusion imaging is typically combined with exercise. This test is used to diagnose coronary artery disease in patients with typical symptoms or patients with high risk for coronary artery disease. ...Read more

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What is a ventilation-perfusion scan?

What is a ventilation-perfusion scan?

Radiological test: A ventilation-perfusion (v/q) scan is a specialized radiological lung test comparing mismatches between any part of your lung that still exchanges oxygen (affected in COPD e.g.) and any part that is not receiving blood flow. This is done through radio-tracers. A mismatch means there is a clot in that part of the lung hindering blood flow. Diseases & surgery of the lung complicate interpretation. ...Read more

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Can you tell me more about cardiac myocardial perfusion scan?

Can you tell me more about cardiac myocardial perfusion scan?

Imaging myocardium: Myocardial perfusion scan is usually injection of radioactive tracer either thallium 201 or tc99m sestamibi. Imaging usually consists of stress , exercise on treadmill or drug induced stress, and then resting phases. Both are imaged and compared looking for areas of permanent damage, infarction, or areas of ischemia, reversible defects in perfusion. ...Read more

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Can someone have a myocardial perfusion scan with a pacemaker?

Can someone have a myocardial perfusion scan with a pacemaker?

Yes: Yes, patients with implanted pacemakers have nuclear stress tests/myocardial perfusion scans. The EKG portion of the test will reflect the pacemaker (and likely a left bundle branch block) but reversible ischemia can still be detected in the scans. ...Read more

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Why would a pulmonary ventilation/perfusion scan be performed?

Pulmonary Embolism: The main reason to perform a pulmonary ventilation-perfusion (v-q) scan is to rule out the presence of a pulmonary embolus (commonly a blood clot). There are several forms of pulmonary thrombo-embolism, but the most common situation is one of sudden onset, leading to sob. Chronic thrombo-embolism leads to development of sob over a long period and it can also be diagnosed with a v-q scan. ...Read more

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Could you have a myocardial perfusion scan if you suffer from myoclonic dystonia?

Could you have a myocardial perfusion scan if you suffer from myoclonic dystonia?

Stress test: It is paramount that the patient is completely still when undergoing myocardial perfusion scanning -- therefore if the myoclonic dystonia is well controlled then you could probably have the scan -- otherwise you have other option of stress and imaging modality. ...Read more

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How long following a myocardial perfusion scan should I wait before visiting a person with a pacemaker?

How long following a myocardial perfusion scan should I wait before visiting a person with a pacemaker?

Immediately: There are no contraindications to visiting a person with a pacemaker after you had a nuclear stress test. You can visit them anytime as the radiation does not effect the pacemaker. ...Read more

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What could cause difficulties with a cardiac perfusion scan?

Movement: Am unclear as to your question, but if i understand right, then moving during the scan would cause problems. Not removing a bra containing wires could cause problems. Severe claustrophobia can also cause problems. ...Read more

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What is a pulmonary perfusion scan used for?

Blood clots : A blood clot that floats into the lung interferes with blood flow to that segment. A lung perfusion scan with will show a hole (no blood flow) behind the clot. ...Read more

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What are the risks in having a myocardial perfusion scan?

What are the risks in having a myocardial perfusion scan?

Stress associated : A myocardial perfusion scan is performed in two steps. One injection of a radiotracer at rest and another at stress ( either treadmill or pharmacological stress test with adenosine, regadenoson, dobutamine, dipyridamole). Only few skin reactions have been reported with the radiotracer injection. Risks are more associated with the stress used for the test such has angina, headache, nausea... ...Read more

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Is it safe to be around kids after a myocardial perfusion scan?

Is it safe to be around kids after a myocardial perfusion scan?

Small exposure: The doses of radiopharmaceuticals used for these scans are usually relatively low dose. However thallium (half life 2.7 days) gives more radiation than technetium sestamibi (half life 6 hrs).Radiation reduction depends mainly on two factors time and distance. If you do not stay close to child for prolonged time then radiation exposure is reduced.Growing children more sensitive to radiation. ...Read more

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Perfusion (Definition)

Perfusion usually refers to blood flow into an ...Read more