Lung Ventilation and Perfusion Study ( V/Q Scan )

You have been scheduled for a lung ventilation and perfusion study, which involves the use of a small amount of radioactive material. The level of radioactivity used is extremely low and will not make you feel any different.

Preparation for the procedure:
There are no pre-exam instructions. Please inform the technologist if you are pregnant or breast feeding. The imaging may be changed, or special instructions given based upon that information.

What to expect:
There are several types of lung studies that we perform. Please ask your doctor which of the following you will receive.
1. Lung Ventilation or aerosol: This study shows the doctor where the oxygen is going in your lungs. Once in the scan room you will lie on a table and a special detector called a gamma camera will be placed near your chest. The technologist will have you breathe a radioactive mist for approximately five minutes. Once you have enough of the mist in your lungs the technologist will take pictures of your lungs at different angles. This takes approximately fifteen minutes.
2. Lung scan: This study shows the doctor where the blood is going in your lungs. You will lie down on a table and the technologist will give you an injection of a small amount of radioactive material in a vein. A gamma camera will be placed near your chest and the technologist will take pictures of your lungs at different angles. This test takes ten minutes.
3. Lung quantitation: This study is generally done to determine what percentage each segment of your lungs is contributing to the total function of your lungs. It is sometimes done with the breathing (aerosol) and sometimes done with the perfusion (scan). The images are acquired basically the same, but computer manipulation of the images is done following the scan.

The images will be reviewed and the results will be sent to your physician. Your physician will discuss these results with you and explain what they mean in relation to your health.

Your questions and comments:
call (805) 563-5870.

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