A CT Scan is an X-ray scan, but of your whole body. You end up with cool cross-sectional images of your insides. In the world of MS, CT Scans aren’t actually the most reliable when it comes to diagnosing the disease. Where they come in handy, however, is excluding other causes of neurologic impairment. In other words, they help you on the path to pinpointing the source of your ailments.