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The SPECT scan was used to take special images of your lungs.

The scan involves injecting special materials directly into a blood vessel. The materials accumulate in particular areas of the lungs, depending on their properties. The special materials give off weak radiation for a certain time. This enables a special camera to measure how much of these materials have accumulated in specific areas.

To do the scan, the person usually lies on a bed in a large piece of equipment that takes pictures of the inside of the body. At the same time CT images are produced using X-rays, and images are produced by the special camera. A computer overlays these images, produced in different ways, on top of one another. This enables an assessment of how active the cells are in the area being examined. This provides conclusions about whether there are any changes in your lungs.