Carotid artery examination includes physical examination, carotid ultrasound, carotid angiography, magnetic resonance imaging and other tests. 1. Physical examination: This examination method refers to the use of visual, tactile, percussion and auditory methods by professionals to explore the carotid artery, in order to clarify whether the carotid artery appears to be a mass, pressure and pain, restriction of movement and other conditions. 2. Carotid ultrasound: Carotid ultrasound refers to the use of color Doppler ultrasound diagnostic equipment to explore the carotid arteries to find out whether the carotid arteries have thickening of the carotid artery wall, thrombus, plaque, stenosis, occlusion and other abnormalities, and also to assess the situation of blood flow in the carotid arteries. 3. Carotid angiography: Carotid angiography refers to the injection of contrast medium into the blood vessels to visualize the carotid blood vessels under CT, so as to check whether the blood vessels are stenotic and the length of the stenotic segments. 4. Magnetic Resonance Imaging (MRI): This examination method uses the movement of hydrogen nuclei in the human body under an applied magnetic field and imaging for carotid examination, which can detect whether there is any abnormality in carotid tissues and blood vessels. When choosing a method to check the carotid artery, it is recommended to consult a medical professional before making a decision.