MYOCARDIAL PERFUSION IMAGING

Myocardial Perfusion Imaging

Myocardial Perfusion Imaging is a non-invasive procedure which evaluates the blood flow (perfusion) through the coronary arteries to the heart muscle using a radioactive tracer. The test is done at rest and is usually requested because the ability to exercise on a treadmill is limited. Small electrode patches are placed on the patient’s chest which allows continuous ECG monitoring during the test and intravenous access is necessary. The nuclear tracer (Rubidium-82, Technetium (99mTc) sestamibi) is administered via the vein and a rest image of the tracer uptake into the heart muscle is obtained using a PET scanner. The heart will then be “stressed” (exercised) with a pharmacological agent, either adenosine or persantin. The nuclear tracer is re-administered at peak stress to obtain the stress images of the heart muscle. Areas of the heart muscle with inadequate arterial blood supply, due to blockages, will show on the stress images.

24-hours before the procedure, patients need to avoid any products that contain caffeine (tea, coffee, milo, cocoa) and any products that contain chocolates. A light meal is allowed 1 hour prior to the test. The use of stress agents, adenosine or persantin is generally avoided in patients with asthma. There are no side effects of the Rubidium-82 and radiation exposure is minimal due to its short half-life.

Myocardial Perfusion Imaging takes about 1 hour if Rubidium-82 is used and normal activities and diet can be resumed soon afterwards. The report is generated by a cardiologist.

Myocardial Perfusion Imaging
HEART-RELATED ARTICLES
Article
3 Ways To Achieve Your Ideal Heart Rate
We've always been told that engaging in regular exercises like walking, running, or swimming gives us a healthier heart. But do you know that over-exercising may also over-work your heart and increase your chances of having heart disease? A fast heart rate of over 100 beats per minute can make you lose your breath and...
Read More
Article
A heart doctor tells why he eats 100g of dark chocolate every week featuring Dr Michael MacDonald
Despite having a “terribly sweet tooth”, heart doctor Michael MacDonald tries to avoid consuming too many sweet and sugary treats for health’s sake. Once a week though, the 44-year-old who professes to be a “big fan of chocolate” permits himself a small bar of dark chocolate.
Read More
Article
7 Facts About Our Clinic
7 Things You Should Know About The Best Heart Specialist Clinic in Singapore
Read More
 
HAVE A QUESTION OR
NEED A SECOND OPINION?
Book an appointment or a teleconsult now.