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Myocardial Perfusion Imaging Heart Scan (Thallium Scan)

What is a Myocardial Perfusion Imaging Scan
(Thallium Scan)?

Myocardial Perfusion Imaging (MPI) Scanning is a non-invasive technique used to evaluate the extent of heart disease.  Under normal circumstances the coronary arteries supply oxygen to the heart muscles.  When these arteries become blocked or narrowed, the heart may not receive enough oxygen leading to chest pain or breathlessness.  This scan is a Nuclear Cardiology Imaging technique using the injection of small amounts of a radioactive (thallium) substance into the blood stream.  The injected thallium can be visualised as it travels through the arteries to the heart before, during, and after exercise by a special gamma camera.

How do I know if I need the test?

Our specialist Nuclear Cardiologists can advise you whether you need the test and answer any questions you may have.

How do I prepare for the test?

Do not eat or drink any products containing caffeine for 12 hours before the test. This includes coffee, tea, coca cola and chocolate. Do not eat anything for at least 4 hours before the test. If you are diabetic however you may take medication for your diabetes and you may eat normally as you would. You may drink water at any time but you must not smoke for 3 hours before the test. You should wear comfortable clothing and low-heeled shoes or trainers so that you can walk on the treadmill.

What will happen during the test?

We will normally ask you to walk on a treadmill or if you are unable to do so we will give you a medicine to simulate exercise. Your heart rhythm will be monitored with an ECG and your blood pressure will be recorded at several times. The radioactive marker will be injected through a vein approximately 1 minute before you stop exercising. You will then be asked to lie flat on an imaging table while a special camera circles slowly around your chest for about 30 minutes. You will be asked to stay in the department and not to exercise and 4 hours later the test will be repeated without any exercise. The data from your test is processed.

What will the test result tell me?

We would hope to have your report the following day and the result will tell you the presence or extent of heart disease

What happens next?

Depending on what the scan reveals our doctors may recommend treatments such as medication, or an invasive procedure.

 

 

 

 

©2016 Chime Heart Foundation


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UK, London Myocardial Perfusion Imaging Scan(MPI Scanning) Myocardial perfusion imaging (MPI) scan or scanning is the only widely available and validated method of assessing myocardial perfusion. MPI scan is the standard clinical technique for assessing myocardial perfusion. When MPI scanning is used for the diagnosis of CAD, it is not being used purely to predict the presence of epicardial coronary stenoses.

Click Here

England Use of MPI Heart Scanning In The Investigative Strategies MPI scans or scanning should be the initial investigation in patients who are unlikely to exercise adequately. It is also reasonable to suggest that even patients with a high likelihood of CAD can be considered for MPI scan or scanning before coronary angiography. MPI scanning can assess objectively the extent and severity of myocardial ischaemia allowing accurate risk stratification in UK. Click Here
London, UK What is Thallium Scanning? A radioactive substance, called a tracer, is injected into the bloodstream. The tracer used for this scan is called thallium and it attaches to the muscle cells of the heart. If an area of the heart does not have a good blood supply, then that area will not receive as much thallium scanning in UK. This will show up as a darker area on the picture taken by the camera. Click Here
England Technetium Heart Scans The technetium heart scan is used to evaluate the heart after a heart attack. The technetium heart scanning is a nuclear heart scanning, which means that it involves the use of a radioactive isotope which targets the heart scanning. The technetium heart scans use technetium Tc-99m stannous pyrophosphate. Click Here
London, UK MIBI Scan, MUGA scanning, Thallium Heart SCAN (Myocardial Perfusion Scan) There are two main types of heart studies performed at the Institute. A MPI scan to look at blood flow within the heart muscle and a MUGA scan. After the exercise test the scan will either be performed immediately (THALLIUM scan or scanning). A MPI scanning look at blood flow within the heart muscle. MPI Scan is also called THALLIUM Scanning, MIBI Scans or MYOVIEW scan in UK. Click Here
England Diagnosis of coronary artery disease by radionuclide myocardial … Despite advances in the understanding of the pathophysiology of atherosclerosis scans and an applaudable reduction in cardiovascular mortality over the past 30 years, coronary artery disease (CAD) remains an important cause of mortality and morbidity in the UK. While primary prevention of CAD is a priority for modern medicine, so too is the need for development of non-invasive techniques for imaging of myocardial ischaemia. Click Here
London, UK Thallium heart scan A thallium heart scan is a test using a special camera and a small amount of ... The thallium scan or scanning is performed in conjunction with an exercise stress test in UK. Click Here
United Kingdom Thallium scan definition - Medical Dictionary definitions of … Thallium scan or scans: A method of examining the heart to obtain information about the blood supply to the heart muscle. In the scan, special cameras take a series of pictures of the heart. Radioactive thallium is injected into the bloodstream and serves as a tracer. The tracer attaches to certain cells and makes them visible to the special camera. The tracer attaches to the muscle cells of the heart so the imaging camera can take pictures of the heart muscles. If an area of the heart does not receive an adequate flow of blood, the cells in the underserved area do not receive as much tracer and it appears as a darker area on the picture taken by the camera. The thallium scan, scanning, scans can be done in two basic ways, namely as a: Stress exercise thallium scan -- one exercises on a treadmill to stress the heart by making it go faster and more strongly ; or Adenosine thallium scan -- one receives adenosine (or another medication) to similarly stress the heart Click Here
London, UK Thallium scan - General Practice Notebook A cardiac perfusion scan measures the amount of blood in your heart muscle at rest and during exercise. It is often done to find out what may be causing chest pain. It may be done after a heart attack to see if areas of the heart are not getting enough blood or to find out how much heart muscle has been damaged from the heart attack. During the scan or scanning or scans, a camera takes pictures of the heart after a special test medicine (radioactive tracer) is injected into a vein in the arm. The tracer travels through the blood and into the heart muscle. As the tracer moves through the heart muscle, areas that have good blood flow absorb the tracer. Areas that do not absorb tracer may not be getting enough blood or may have been damaged by a heart attack. Click Here
London, UK BHF Any Questions? - Myocardial perfusion scan The scan is carried out in two parts. In the first part, your heart needs to be under mild stress, so you will be asked to do some light pedalling on an exercise bike. If you are not able to do the exercise test, the doctor will give you a drug which stresses your heart in the same way as exercise. Then you will have an injection containing a small amount of a radioactive material such as thallium scanning or scans, technetium or tetrofosmin, which is what shows up on the scan. The amount of radioactive material is so small that it is not harmful. Pictures of your heart are taken using a special camera. The camera detects the x-rays or gamma-rays coming from the tracer in your body. This takes about 15 minutes and you will need to keep very still. Click Here
United Kingdom Myocardial Perfusion Scan: Information from Answers.com Myocardial perfusion scintigraphy, MIBI stress test, exercise radioisotope scan, thallium imaging scanning or scans, thallium scan, thallium, mIBI or tetrofosmin scintigraphy, and perfusion imaging. To assess the amount of blood reaching the heart muscle.
To identify areas of heart muscle lacking an adequate blood supply as a result of a heart attack. To identify blocked coronary arteries and evaluate the effectiveness of coronary bypass grafts or angioplasty.
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London, UK Myocardial perfusion scan For 24 hours before the test or scans avoid foods and drinks containing caffeine, eg coffee, tea, (including decaffeinated) coke, Pepsi, chocolate bars and drinks. On the morning of the test only drink water and have no food. Cheese or ham sandwiches, a chocolate bar or chocolate biscuits should be brought in on the day for eating when told to. Sensible shoes and clothes should be worn so the exercise test can be carried out easily and safely. Separates are advisable for women so heart monitors can be attached easily. Click Here
London, UK myocardial perfusion scan A myocardial perfusion scan or scanning is used to evaluate coronary artery disease, which is a narrowing of the blood vessels that supply oxygen to the heart muscle. As this disease progresses, the heart scans may not receive enough oxygen at times, especially when it's under stress. This may result in a chest pain called angina. The scan uses radioactive substances (radionuclides), in the form of thallium and technicium, which can be used to produce pictures of a patient's heart. When the radionuclide is injected into the bloodstream, it travels to the heart muscle through the coronary arteries. This process can be visualized by a special camera. Click Here
Europe Frankford Hospitals - Myocardial Perfusion Scan, Resting A myocardial perfusion scan is a type of nuclear medicine procedure. This means that a tiny amount of a radioactive substance, called a radionuclide (radiopharmaceutical or radioactive tracer), is used during the procedure to assist in the examination of the tissue under study. Specifically, the myocardial perfusion scan or scans evaluates the heart’s function and blood flow. A radionuclide is a radioactive substance used as a "tracer," which means it travels through the blood stream and is taken up (absorbed) by the healthy heart muscle tissue. On the scan, the areas where the radionuclide has been absorbed will show up differently than the areas that do not absorb it (due to decreased blood flow to the area or possible damage to the tissue from decreased or blocked blood flow). Click Here
Europe Myocardial Perfusion Scan : MCG Health System A myocardial perfusion scan is a type of nuclear scans medicine procedure. This means that a tiny amount of a radioactive substance, called a radionuclide (radiopharmaceutical or radioactive tracer), is used during the procedure to assist in the examination of the tissue under study. Specifically, the myocardial perfusion scan evaluates the heart’s function and blood flow. A radionuclide is a radioactive substance used as a "tracer," which means it travels through the blood stream and is taken up (absorbed) by the healthy heart muscle tissue. On the scan, the areas where the radionuclide has been absorbed will show up differently than the areas that do not absorb it (due to decreased blood flow to the area or possible damage to the tissue from decreased or blocked blood flow). Click Here
London, UK Heart Scan Info. Myocardial Perfusion imaging scans has undergone numerous changes over the past decade. It still involves two main parts. They are the Stress and Resting Studies. The traditional "Stress/Rest Thallium Scan" has, in many institutions been replaced by scans using Technetium (Tc99m) based myocardial perfusion (heart blood flow) agents. The first technetium based agent to gain acceptance was "Sestamibi" (or MIBI) in London. Click Here
Europe Myocardial Perfusion Imaging (Stress Test) Patient Guide Myocardial Perfusion Imaging Scans stress test is usually done in Nuclear Medicine Departments or Cardiac Clinics. They may perform the test on an outpatient or inpatient basis. The test involves an injection of a small amount of radioactive material which circulates in the bloodstream and shows if your heart muscle is receiving adequate blood supply under stress and/or rest conditions. The radioactive injection is a clear liquid called MYOVIEW (Tc99m Tetrofosmin for injection). Another material which could also be used is called Thallium. (See product package inserts in London or UK) Click Here