About CT Scans and X-Rays on Cats and Dogs
Computed tomographic imaging, also known as a "CT" or "cat scan" for cats and dogs, works by producing multiple individual images, or "slices," throughout a specific area of the body.
A common comparison for the image a CT scanner produces is individual slices of bread that make up a complete loaf. The CT machine creates two-dimensional slices of a section of your pet’s anatomy and then assembles them into a complete image for viewing. These slices can also be used to create three-dimensional reconstructions, which are useful for surgical planning. Once the images are produced, they are sent to a veterinary specialist for review and interpretation.
An X-ray is a quick, painless test that produces images of the structures inside your cat or dog's body, mainly the bones. X-rays pass through the body and are absorbed in different volumes depending on the material density they have to pass through.
What can X-rays and CT scans for a dog or cat help vets diagnose?
X-rays are among veterinary healthcare's most helpful and frequently used tools. They can help vets view your pet's bones, tissues, and internal organs to diagnose issues such as broken bones, bladder stones, swallowed foreign objects, and more. X-ray images can help vets spot some tumors, pregnancy, and enlarged organs, which may lead to a diagnosis such as heart disease or cancer.
However, X-ray technology cannot provide a detailed view of organs, tissues, and ligaments. Other diagnostic imaging, such as MRI and ultrasound, are more beneficial in these cases.
The high-resolution images produced by the CT machine help vets evaluate your pet's anatomy in great detail—a detail that we would otherwise not be able to see using standard X-rays. CT scanners provide excellent detail of the body's bony and soft tissue structures.
How can I prepare for my dog or cat's X-ray or CT scan appointment?
Often, X-ray and CT scans are done when an animal is brought in to have an issue looked at by the vet. For that reason, no preparation is required. Your vet will examine your pet and if an X-ray or CT scan is needed, they will take some time to explain the procedure and what they will be looking for.
If your pet's X-ray or CT scan was booked, your vet will provide all the instructions you need on the day of the procedure.
Will my dog or cat be sedated when they have their X-ray or CT scan?
Sedation is sometimes required to obtain a clear X-ray. However, sedation will not be necessary if your dog or cat is calm, not in too much pain, and can lie comfortably while the X-ray is taken.
On the other hand, sedation will be recommended if your dog or cat is squirmy, edgy, or in pain. Other reasons why sedation may be used during your pet's X-ray include whether the dog or cat's muscles need to be relaxed to get a clear image or when the X-ray is used on the skull, teeth, or spine.
For CT scans, general anesthesia is required because your pet needs to be very still during the scan.
Are X-rays & CT scans safe for dogs & cats?
While X-rays and CT scanners are generally considered safe for dogs and cats, radiation is involved, so they are typically used only occasionally and generally as diagnostic tools. In some cases, vets will use X-ray technology to glean information about a dog's pregnancy; however, other forms of imaging, such as ultrasound, could be used in that case.
If you're concerned about using X-ray or CT scanner technology for your dog or cat's health, speak to your vet. Your veterinarian will be able to explain the risks versus the benefits in your dog or cat's particular case so that you can make an informed decision regarding your pet's care.
How much will my dog or cat's X-rays or CT scan cost?
A range of factors will dictate the cost of your dog's or cat's X-rays, including the size of your pet, the area being examined, whether sedation was used, the type of clinic, where your veterinary clinic is located, and more. If you are concerned about the cost of your cat or dog's X-rays, ask your vet for an estimate before proceeding.
CT scans are the same. The cost will differ based on what needs to be done to your pet.
Note: Jackson Animal Clinic does not offer CT scans at this time. The advice provided in this post is intended for informational purposes and does not constitute medical advice regarding pets. For an accurate diagnosis of your pet's condition, please make an appointment with your vet.