TCD is a non-invasive ultrasound method used to examine the blood circulation within the brain. Your physician has recommended that you have this test to determine the amount of blood flow to certain areas of your brain.
TCD ultrasound images help in the diagnosis of a wide range of conditions affecting blood flow to the brain and within the brain. During TCD, sound waves, inaudible to the human ear, are transmitted through the tissues of the skull. These sound waves reflect off blood cells moving within the blood vessels, allowing their speed to be calculated.
The American Association of Neuromuscular & Electrodiagnostic Medicine (AANEM) has published a recommended policy for Electrodiagnostic Medicine to improve the quality of patient care, to encourage appropriate utilization of the procedures involved, and to assist Medicare Carrier Advisory Committees and other insurance carriers in developing policy regarding EDX testing. Unfortunately, EDX studies are poorly understood by many in the medical and lay communities. Please visit the EDX Edu section for more information on how to be a better informed prior to having EDX and other laboratory services.
Prior-authorization for services by your insurance company does not guarantee payment of medical services. Patients should call their insurance to verify that these services are a covered benefit.
EDX Services and Quick Links