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Nuclear Medicine Ventilation/ Perfusion Lung Scan

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Nuclear Medicine Ventilation/ Perfusion Lung Scan

  1. 1. Nuclear Medicine Ventilation/ Perfusion Lung Scan Your Lung Scan is scheduled at Jamestown Hospital on ___________________________ at _________________________am/pm. Please report to the Admissions desk in the front lobby of the hospital 5-10 minutes before the scheduled time. Your procedure will take approximately 30-60 minutes. DESCRIPTION A nuclear medicine lung scan is a diagnostic procedure performed to evaluate the movement of air (ventilation) and blood flow (perfusion) both into and out of the lungs. In order to function properly, the lungs depend on an adequate supply of air to the air sacs and blood to their arteries. Conditions like emphysema, infection, and pulmonary embolism can affect lung function. Pulmonary embolism is caused by a blood clot that obstructs the blood flow into an artery. The ventilation/ perfusion lung scan can detect pulmonary embolism (blood clot) as well as other conditions which affect lung function. The procedure is routinely done as two separate studies: The first involves acquiring images after you have inhaled a small amount of radioactivity through a mouthpiece; the second involves imaging after a radiopharmaceutical has been injected into the blood. The radiologist will compare the two sets of images to identify any abnormalities or filling defects. The nuclear medicine lung scan involves the administration of a very small amount of a radioactive material which is quickly cleared from your body. The amount of radiation you will receive is comparable to that from an x-ray CT scan. PREPARATION 1. Inform your physician or the technologist if you have had a reaction to products containing human serum albumin. ** The radiopharmaceutical injected for the perfusion scan contains albumin, a blood product. Inform the technologist if your religious affiliation does not permit the use of blood products. 2. Wear comfortable, loose-fitting clothing. 3. A chest x-ray may be obtained within 12 hours of doing the scan. 4. Inform the technologist if you are pregnant or nursing an infant. PROCEDURE For the ventilation lung scan, you will need to breathe a tasteless, odorless radioactive gas through a mouthpiece for 10 minutes. This radioisotope will travel to the target organ (the lungs) and transmit a pattern of rays representing the organ size, shape, and function. The rays will be detected by a special camera which relays the information to a computer that produces a characteristic image on a monitor. You will need to lie on a scanning table with the nuclear camera placed near your chest. Multiple images will be taken of the lungs from various angles. Following the ventilation scan, the technologist will inject a diagnostic drug containing a small amount of radioactivity into a vein in your arm. Multiple images will again be taken of the lungs from various angles. It is important for you to lie still during image acquisition as movement may result in the need for additional scans. POTENTIAL RISKS A ventilation/ perfusion lung scan is not recommended during pregnancy. Discuss this matter with your physician before undergoing the procedure. ** If you are a nursing mother, formula feeding should be substituted for breast feeding. ** There is a very rare possibility of adverse patient reaction to the drug used for the perfusion study in patients with a pre-existing severe pulmonary hypertension condition. POST-PROCEDURE INSTRUCTIONS You may resume your regular activities after completion of the scan unless you are told otherwise by your physician. You should monitor the injection site for any signs of infection. REPORTS The radiologist will report the test findings to your physician. Your physician will contact you with the results within 2-3 days. If your procedure is performed on an emergency basis, the radiologist will call the report to your physician and you will be notified of the results as soon as possible after the examination is completed. FOR MORE INFORMATION Contact the Radiology Department at Jamestown Hospital 1-701-952-4852 or
  2. 2. 1-800-281-8888, Ext. 4852 NUCLEAR MEDICINE VENTILATION/ PERFUSION LUNG SCAN Radiology Department