What is Transcranial Doppler (TCD)?

Answer:

Transcranial Doppler, abbreviated as TCD, is a non-invasive test for vascular disease that utilizes the ultrasound Doppler effect to detect the hemodynamics of major arteries in the intracranial basilar arterial ring, as well as physiological parameters of each 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 a variety of cerebrovascular diseases, middle-aged and elderly people, you can carry out this examination, a more comprehensive understanding of the health status of the body.

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Transcranial Doppler ultrasound (TCD) is the use of the ultrasound Doppler effect to visualize the head from occipital, temporal, and ophthalmic windows, such as the occipital and ocular windows 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 in the base of the skull and a series of physiological parameters from the occipital window, temporal window, ocular window and other physiological foramina in the head, or the thin parts of the skull.

The arteries that can be 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 of the major arteries of the base 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.