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Other tests used to stage lung cancer at diagnosis include: 1  Magnetic Resonance Imaging (MRI). A type of imaging scan that uses magnetic fields to create clear images of body parts, including tissues, muscles, nerves and bones. 2  Positron Emission Tomography (PET). A type of imaging scan that is used to tell if lung cancer has spread to other parts of the body. Cells use sugar (glucose) for energy to function and cancer usually uses more than other cells or tissues. A special sugar solution is injected into the body through a vein.
Further tests if you have an abnormal screening test result. It is common for a low-dose CT scan of the lungs to show small, abnormal areas (called nodules or masses) in the lungs, especially in current or former smokers. Most lung nodules seen on CT scans are not cancer.They are more often the result of old infections, scar tissue, or other causes.But tests are often needed to be sure a nodule is not cancer. Most often the next step is to get a repeat CT scan to see if the nodule is growing over time.urther tests if you have possible signs or symptoms of lung cancer. If your doctor is concerned you might have lung cancer because of signs or symptoms you are having, a chest x-ray or chest CT scan to look for tumors in the lung is likely to be the next step.