When you might need a CT scan: An imaging test might be appropriate if you have an abnormal neurological exam or your doctor can't diagnose your headache based on your symptoms and an exam.

A chest X-ray or CT scan often incidentally finds lung nodules which are small growths While most lung nodules are benign ...

The computer puts them together to make a 3 dimensional (3D) image. You might have a CT scan of your abdomen and chest to look for any abnormal areas in your liver or elsewhere in the body. MRI stands ...