Choosing the proper test is critical to the care of your patient. However, your decision can be based on many factors.

MRI is generally the gold standard. In situations where results are extremely time sensitive (head trauma, disk disease), MRI is not available, cost is a limiting factor, or time under anesthesia is critical then a CAT scan may be a better diagnostic test. Occasionally, both tests are indicated if the disease might involve both bone and soft tissue.

Our Medical Director, Dr. Uzzle is available to discuss questions on which test is recommended in a particular situation, he can also draw on his extensive experience and on the expertise of a team of board-certified radiologists.

For more information please contact us and refer to the following general guidelines for selecting MRI and/or CAT Scanning.

General guidelines for selecting MRI and/or CAT Scanning

Problem Location MRI CAT Scan
Seizure Brain Best test Useful if disease thought to extend into the brain from a boney structure and assessing ventricle size
Poor balance / Vestibular disease Brainstem Best test Useful for ear disease
Back or neck pain
Weak and wobbly
Incontinence
Spinal Cord Best test Useful for visualizing mineralized disk material in spinal canal

Can be combined with contrast study (myelogram)

Lameness Elbow

Complex fracture

Best test
Lameness Joints (shoulder, knee, others) Best test
Portosystemic shunt Liver Best test
Nasal discharge Nasal cavity and sinuses MRI and CAT scan thought to be equally useful
Cancer or other diseases in thoracic cavity Lungs Best test
Cancer and disease in abdomen Abdomen Best test Useful for defining borders of mass for surgical planning
Atlanto-axial subluxation Vertebral malformations Vertebrae and spinal cord MRI best for spinal cord imaging but reconstruction CT best for defining location of the vertebrae