Cardiac Blood Pool Scan
How To Prepare continued...
You may be asked not to eat or drink for a few hours before the
test. You should not have any caffeine or smoke for 4 to 6 hours before the
If testing will include exercise, you should wear
comfortable shoes and clothing.
Many medicines may affect the
results of this test. Be sure to tell your health professional about all the
nonprescription and prescription medicines you take.
Talk to your
doctor about any concerns you have regarding the need for the test, its risks,
how it will be done, or what the results will mean. To help you understand
the importance of this test, fill out the
medical test information form(What is a PDF document?).
How It Is Done
A cardiac blood pool scan usually is
done in a hospital by a radiology or nuclear medicine technician. Most people do not have to stay overnight in the hospital.
Before the test
You will need to remove any
jewelry that might interfere with the scan. You may need to take off all or
most of your clothes. You will be given a cloth or paper gown to use during the
During the test
You will lie on an examination
table beneath the gamma camera.
Electrocardiogram (EKG, ECG) electrodes are attached
to your chest so that the electrical signal of your heart can also be detected.
Then the camera, which is a round metal instrument about
3 ft (1 m) wide, will be
positioned close to your body. If you are cold or uncomfortable lying on the
table, ask the technician for a pillow or blanket. The camera may be positioned
in different places across your chest to record different views of your
The technician cleans the site on your arm where the
radioactive tracer will be injected. An elastic band, or tourniquet, is then
wrapped around your upper arm to temporarily stop the flow of blood through the
veins in your arm. This makes it easier to put the needle into a vein properly.
A small amount of the radioactive tracer is then injected, usually into a vein
on the inside of your elbow.