The PET scan wasn’t as bad as I thought it would be. I took a muscle relaxant ahead of time and it really helped. The scan is laying down with a camera starting at your head and slowly moving down to the mid-thigh level. The whole thing takes about 45 minutes for the Glucose to work and 45 minutes for the scan. The Glucose injection binds with the cancer cells to make them more visible on the scan and to tell how far the cancer has spread through the Lymphatic System.