What is a lung scan?
A lung scan is a procedure that uses a radioactive chemical
to look at your lungs. The chemical is called a
radiotracer.
When is it used?
This procedure is done to check for a blood clot in your
lung (a pulmonary embolus).
How do I prepare for a lung scan?
Follow your health care provider's instructions.
What happens during the procedure?
The x-ray technologist injects a small amount of
radiotracer into a vein in your hand or arm. As the
chemical moves through your bloodstream, a special camera
records how the blood flows into your lungs. The
information creates a picture your health care provider can
use to see how well all parts of the lungs are working.
You may also be instructed to breathe a small amount of
radiotracer mixed with oxygen through a face mask. You
will be asked to breathe in and out and hold your breath.
The camera records where the air is going inside your lungs.
What happens after the procedure?
The radiologist sends the complete report to your health
care provider. If you do have a blood clot in your lung,
you may need to stay in the hospital to have blood thinner
medicine (an anticoagulant).
The small amount of radioactivity is not considered
dangerous. It will be completely gone from your body within
hours to days.
If your test is negative, you should ask your provider if
you need more tests and when you need to come back for a
checkup.
What are the benefits of this procedure?
This procedure will not cure the problem, but it may help
your health care provider make a more accurate diagnosis.
What are the risks associated with this procedure?
Reactions to the radiotracer happen rarely. You should ask
your provider how this risk applies to you.
When should I call my health care provider?
Call your health care provider right away if:
- You develop a fever.
- You become short of breath.
- You develop chest pain.
Call your health care provider during office hours if:
- You have questions about the procedure or its result.
- You want to make another appointment.
This content is reviewed periodically and is subject to
change as new health information becomes available. The
information is intended to inform and educate and is not a
replacement for medical evaluation, advice, diagnosis or
treatment by a healthcare professional.
Copyright © 2005 McKesson Corporation and/or one of its subsidiaries. All Rights Reserved.
This
information is approved and/or reviewed by U-M Health System providers
but it is not a tool for self-diagnosis or a substitute for medical
treatment. You should speak to your physician or make
an appointment to be seen if you have questions or concerns about
this information or your medical condition.