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
How Does Stress Affect The Heart?
The stress response is a normal physiological response to help you deal with threats. When your body perceives a threat, it increases the production of cortisol and adrenaline. Cortisol raises your blood sugar and adrenaline elevates your heart rate and blood pressure. They are complex hormones that combine to alter the way multiple systems in your body function i.e. digestion and immune systems. When the threat diminishes the hormone levels return to normal.
Read More
Article
3 Factors That Make You An Ideal Candidate For Open Heart Surgery
Heart attack is the second most common cause of death in Singapore, and the third most common reason for hospital admission. According to the Ministry of Health, 261 patients were admitted to the National Heart Centre for open heart surgery (coronary artery bypass graft) from 1 May 2014 to 30 April 2015. 67 patients were...
Read More
Article
Is Your Heart Bleeding? Learn About The Heart Surgery To Plug Leaks In Your Heart Valve
A healthy heart functions in such a way that it pumps blood sufficiently and enables blood to flow from the heart chambers into the other organs of the body. Unfortunately, leaks can sometimes develop in the heart valves, impairing the forward flow of blood. Leaky heart valves, such as mitral regurgitation, cause blood to flow...
Read More
 
HAVE A QUESTION OR
NEED A SECOND OPINION?
Book an appointment or a teleconsult now.