Diagnosing Aphasia Aphasia is diagnosed and evaluated through testing. Initial tests, often administered by a physician who suspects aphasia, may involve asking a person to name objects, answer questions, and follow commands. A more extensive evaluation, usually done by a speech-language pathologist, employs in-depth, standardized tests to assess the person’s remaining language skills. Testing Reveals Vital Information and Guides Therapy The results of these tests indicate the severity of the aphasia and may also provide information about the exact location of the brain damage. Testing also provides information that the speech pathologist can use to design an individualized speech therapy program. Additional information about the location of the brain damage may be gathered using imaging technologies, such as magnetic resonance imaging (MRI) and computed tomography scans (CT).