Global Aphasia Evaluation
The evaluation of aphasia begins with a medical history and physical examination.
The diagnosis of aphasia can be made without testing, but testing is required to determine the underlying cause for aphasia.
Tests for aphasia may include:
- CT scanning of the brain
- MRI scan of the brain
- SPECT scanning:
- A newer method that may provide earlier detection of stroke in some cases
- PET scanning of the brain:
- Can detect changes in brain metabolism and activity.
- Blood clotting studies
- Blood electrolytes
- Blood glucose
- Pulse oximetry
Other tests that may be required if a stroke or TIA is the cause for the aphasia:
- Carotid angiogram:
- A special x-ray procedure that can detect blood vessel narrowing in the carotid arteries, which often cause strokes.
- Carotid duplex ultrasound, or doppler ultrasound:
- Can detect narrowing and reduced blood flow in the carotid arteries that supply the brain
- C-reactive protein
- Coagulation profile and bleeding time
- Homocysteine level
- LDL level
- HDL level
- VLDL level
- Total cholesterol level
- Often elevated in people who are at high risk for stroke
Continue to Global Aphasia Treatment
- Berthier ML. Poststroke aphasia : epidemiology, pathophysiology and treatment. Drugs Aging. 2005;22(2):163-82. 
- Dobkin BH. Clinical practice. Rehabilitation after stroke. N Engl J Med. 2005 Apr 21;352(16):1677-84. 
- Grossman M, Ash S. Primary progressive aphasia: aNeurocase. 2004 Feb;10(1):3-18. 
- Mesulam MM. Primary progressive aphasia--a language-based dementia. N Engl J Med. 2003 Oct 16;349(16):1535-42.