What is the significance of TCD examination for stroke diagnosis and treatment

Transcranial Doppler ultrasound (TCD) is a very effective and noninvasive method of cerebral vascular examination. It has been widely used in clinic at present to judge and screen intracranial arterial diseases related to stroke. It is to judge the general situation of blood vessels through the change of local blood flow velocity of bilateral carotid artery and vertebral artery, and timely discover whether there is stenosis, blockage, spasm and other manifestations of intracranial blood vessels, so as to guide clinical diagnosis and achieve the purpose of early diagnosis and early treatment.