Transcranial Doppler (TCD) is a non-invasive test for vascular disease that utilizes the ultrasound Doppler effect to detect the hemodynamics of the major arteries in the intracranial basilar arterial ring, as well as the physiological parameters of the blood flow. In recent years, it has developed rapidly at home and abroad, and has become one of the most important means of diagnosing cerebrovascular diseases.
TCD (Transcranial Doppler) is an effective technology for cerebrovascular examination, belonging to the scope of ultrasound, which can effectively detect various cerebrovascular diseases, middle-aged and elderly people, can carry out this examination, and a more comprehensive understanding of the health status of the body.
Transcranial Doppler ultrasound (TCD) is a non-invasive cerebrovascular disease screening method that utilizes the ultrasound Doppler effect to detect the Doppler signals of the arterial blood flow at the base of the skull and a series of physiological parameters and indexes from the occipital, temporal, and ophthalmic windows and other physiological holes in the head or the thinner parts of the skull.
The arteries detected include the middle cerebral artery, anterior cerebral artery, posterior cerebral artery, anterior communicating artery, posterior communicating artery, terminal segment of the internal carotid artery, siphon segment of the internal carotid artery, extracranial segment of the internal carotid artery, intracranial segment of the vertebral artery, and basilar artery.
Expanded Information
Transcranial Doppler ultrasound is used to determine the presence or absence of cerebrovascular diseases, such as cerebral stenosis, cerebral aneurysm, cerebral infarction, and cerebral hypoperfusion, by detecting the blood flow in the major arteries of the basement of the brain within the skull. However, if the examiner is an elderly person (especially a woman) with conditions such as skull thickening, tortuous arteries, and displaced arteries, the accuracy of the results will be affected.