Diagnostic Procedures

Accurate evaluation and diagnosis of neurological problems require sophisticated medical knowledge. Greenwich Hospital neurologists are highly skilled in the use of advanced techniques to reach a proper diagnosis. 

After a complete medical history and physical examination, patients may undergo diagnostic tests appropriate for their condition. Following are among the tests offered at Greenwich Hospital:

• Arteriogram (angiogram). Arteries and veins are x-rayed to detect blockage or narrowing of the vessels.
• Cerebral angiography. Contrast material, or dye,  is injected and then followed by an x-ray to visualize blood flow through the brain.
• Computed tomography scan (CT or CAT scan). A combination of x-rays and computer technology creates highly detailed images of any part of the body, including the bones, muscles, fat, and organs.  
• Electrodiagnostic tests help diagnose disorders of the muscles and neurons.
• Electromyography (EMG). A needle placed in the muscle records and analyzes the electrical activity in the muscle.  
• Nerve conduction velocity (NCV). Surface electrodes attached to the body measure the speed of electrical signals through a nerve to diagnose and evaluate nerve damage.
• Electroencephalography/Electroencephalogram (EEG).  Electrodes attached to the scalp record the brain's continuous electrical activity.
• Evoked potential tests. Procedures that use electrodes taped to the head to measure and record the brain's electrical response to visual, auditory and sensory stimuli.
• Lumbar puncture (spinal tap). A needle placed into the spinal canal measures the pressure around the spinal cord and brain. A small amount of cerebral spinal fluid may be extracted to test for infection or other problems.
• Magnetic Resonance Imaging (MRI). A procedure that uses  a magnetic field and pulses of radio wave energy to create pictures of organs and structures inside the body.
• Myelogram. Dye injected into the spinal canal makes the structure clearly visible on x-rays.
• Positron emission tomography (PET).  A material called “radiotracer” is injected, inhaled or swallowed to help evaluate cell activity and determine how well organs and tissues are functioning.
• Ultrasound (sonography). High-frequency sound waves and a computer create images of blood vessels, tissues, and organs.

To contact Cardiology & Neurology Diagnostic Services please call 203-863-3164.