What is lung perfusion scanning?

lung perfusion scanning is a medical imaging scan performed to assess the quality of blood flow into the lungs. It is usually done in accordance with lung ventilation scanning, looking at how much air enters the lungs, and both tests can be known together as scanning V/Q. The purpose of such scans is to look for areas where blood or air circulates in the lungs, suggesting that lung embolism or other respiratory problem is present. Tests are performed by an outpatient base on a imaging clinic or hospital. The patient lies flat and still on the table, and the imaging machine takes a number of images to follow the hitchhiker when it flows through blood in the lungs. Cold scan spots indicate areas where blood supply is insufficient, indicating the problem with the lungs. After scanning, the patient can usually go home immediately to the domain will be naturally excluded from the body over a few days.

in a test in/Q is first performed by ventilation scan, with an oxygen and radioactive gas mixture. Once the patient's lungs are cleaned, a lung perfusion scan can be performed. The results of both scans are compared and should be identical and show a healthy perfusion of blood with lungs and thorough oxygen circulation. Cold places for scanning are a reason for concern. In addition, there may be lung X -ray, which is used as a basis for comparison and study, depending on why the patient has scanning first.

risks associated with lung perfusion scanning are low. Radioactive isotope is provided at a very low dosage and should not expose the patient the risk of disease or other complications. Injection infections are a potential risk, but very small one if hospital staff use safe injections. In some cases, patients develop allergies to used trace dyes, in which case they may be endangered in future scansan allergic reaction. People with a history of bad reactions during medical imaging studies with radioactive substances and people with egg allergies should alert their providers before scanning lung scan.