Unlike traditional radiography, CT scanning takes x-rays 360° around the patient which creates cross-sectional images of the animal. The patient is moved millimeters at a time, with more images being taken each time until the suspected area is imaged. A computer then uses this information to produce the image the veterinarian sees, a detailed picture with multiple viewpoints. The number of images taken depends on the size of the area where a problem is suspected. CT scanning requires the patient to be perfectly still, so general anesthesia or heavy sedation is used to ensure the patient stays in the proper position and a clear image is obtained.