Myocardial Perfusion Scintigraphy (MPS)

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Description

Myocardial Perfusion Scintigraphy (MPS)

Simply, it is an imaging method that helps to understand
whether a person has coronary artery disease (CAD) by evaluating the amount of
blood reaching the heart muscle.

How is it done?

A radioactive drug with a low amount of radiation for the
film; It will be injected intravenously at the end of the stress test
(exercise or pharmacological) to be applied. The radioactive drug reaches
the coronary arteries and the heart muscle through the blood flow. Then,
with the help of a special camera, images are obtained showing how the radioactive
substance is distributed in your heart. Images are edited and evaluated
with the help of a computer. The amount of radioactive drug increases or
decreases in direct proportion to the amount of blood going to the heart
muscle. Thus, the heart muscle fed by the coronary arteries is visualized
and information about the stenosis or occlusion in the coronary arteries is
obtained.

Exercise stress test

CAD can sometimes only be detected when the heart is under
stress and needs more blood. For this reason, MPS work is usually carried
out in two ways, at rest and after stress. Exercise to create stress on
the heart can be with the help of a treadmill or bicycle. Exercise helps
detect the presence of blockages and narrowings by making your heart work
harder and increasing the need for blood.

Pharmacological stress test

It is applied to patients who cannot exercise adequately due
to some physical reasons (eg orthopedic problems). An intravenous drug
puts a stress on your heart similar to an exercise test. This medicine
does not contain radioactivity. The images to be obtained after the stress
test are compared with the resting images. Myocardial perfusion
scintigraphy can provide your doctor with the following information about your
condition:

Whether you have CAD, and if so, at what level it is,

Your risk of having a heart attack (infarction),

Whether you need other tests or treatment for CAD.

Is myocardial perfusion scintigraphy a safe procedure?

Like many people, you may be worried about the radiation you
may be exposed to from this test. However, you can be comfortable with
this. Because as a result of this test, the total amount of radiation your
body will be exposed to will not be more than a typical X-ray film. The
given radioactive drug will physically lose its radioactive feature in a short
time, and it will be quickly eliminated from your body by natural means.

What should you pay attention to before myocardial perfusion
scintigraphy?

Unless told otherwise, do not eat or drink anything for
at least 4 hours before your appointment time.

If you have medications that you are using for heart
disease, hypertension, diabetes and similar reasons, do not use these drugs for
the period that will be notified to you (average 2 days before), unless
otherwise stated.

On the day of the procedure, come to the hospital with
comfortable clothes and shoes rested.

If a pharmacological stress test is to be applied, stop
the use of foods such as tea, coffee, chocolate a few days before.

If available, please bring your status summary –
epicrisis reports or previous test results with you.

Myocardial perfusion scintigraphy is an imaging method
that has been applied for more than 20 years, does not pose a serious risk to
the patient, and its results have been proven many times over.

Tag: Myocardial Perfusion Scintigraphy (MPS)