Electromyography Study (EMG)
What is an EMG Study?
An EMG is a two-part test that includes:
Nerve Conduction Studies (NCS): An NCS Study measures how quickly electrical signals move through your nerves.
Needle Electromyography: Involves the insertion of a fine needle electrode into specific muscles to record electrical activity at rest and during movement.
Together, these components help determine whether muscle weakness or dysfunction is caused by muscle conditions or nerve disorders.
What Can an EMG Diagnose?
EMG studies are often ordered when patients experience symptoms such as:
- Tingling or numbness
- Muscle weakness
- Cramping or twitching
- Radiating pain in the arms or legs
These symptoms may be associated with:
- Carpal tunnel syndrome
- Peripheral neuropathy
- Sciatica or pinched nerves
- Radiculopathy
- ALS (Lou Gehrig's Disease)
- Myasthenia gravis or other neuromuscular disorders
How is an EMG Performed?
EMG studies are typically performed by a trained specialist at select Capitol Imaging Services locations. During the test:
- You will lie comfortably on an exam table.
- For the nerve conduction portion, small electrodes are placed on the skin. A mild electrical stimulus is applied to measure nerve response time.
- For the needle EMG, a fine, sterile needle is inserted into specific muscles. The electrode in the needle records the electrical activity of the muscle.
These recordings help identify patterns that indicate nerve or muscle dysfunction.
What Will the Patient Experience?
How Long Does an EMG Take?
Have Questions? We Have Answers!
Capitol Imaging Services is proud to offer EMG studies at the select locations listed below. Our highly trained technologists and reading physicians are committed to accurate, compassionate care.
To learn more or to find the nearest CIS center that performs EMG studies, contact us today. We are happy to answer your questions and help coordinate your appointment.
