X-Ray – also known as radiographs, are the most common form of imaging used by veterinarians. Taking an x-ray involves exposing your pet to a beam of x-rays and taking a picture of their distribution as they pass through your pet. They are particularly useful for diagnosing fractures, arthritis, and pneumonia. However, not all diseases and conditions are apparent through x-rays, and for this reason your veterinarian may recommend other types of imaging.