Angiography

Vascular color ultrasonography is an auxiliary examination method used to check whether a blood vessel is normal. Vascular ultrasonography is referred to as non-invasive angiography. The use of color Doppler ultrasound shows some vascular conditions such as the anatomy of the blood vessel and the inner diameter of the lumen. Among them, the color ultrasound is formed on the basis of the black-and-white B-ultrasound image and the pseudo-color based on the principle of Doppler effect. Through this examination, the lesion and the corresponding symptoms can be judged. Basic Information Specialist classification: cardiovascular examination classification: ultrasound Applicable gender: whether men and women apply fasting: not fasting Tips: Stop cardiotonic medication or correct severe arrhythmia before measuring heart function. Normal value Normal vascular ultrasonography has no thrombus, the degree of plaque is low, and the blood vessels are not blocked or blocked. It has a great effect on the clinical treatment of blood vessels and diseases. Clinical significance Abnormal results: vascular ultrasonography can clearly show the anatomy of the blood vessels, the inner diameter of the lumen, the presence or absence of atherosclerotic plaque, and blood flow. Long-term bed rest, patients after surgery, if the sudden swelling of the limbs, often caused by venous thrombosis, color Doppler examination can observe the presence or absence of thrombus, the scope, venous return, venous valve function. Atherosclerosis can affect the systemic blood vessels, especially in patients with diabetes. The long-term stenosis or occlusion of the limbs is an important cause of insufficient blood supply to the lower limbs. People who need to be examined: regular physical examination items, patients with cardiovascular disease. Precautions Contraindications before examination: Cardiopulmonary drugs should be discontinued or severe arrhythmias should be corrected before heart function measurement. There are generally no contraindications. Requirements for inspection: When the color ultrasound is checked, young children may not cooperate during the examination, and sedatives must be given in advance. Inspection process The patient is placed in the supine position, and the doctor performs an examination in a suitable environment. By observing the results of various blood vessel examinations, the patient's corresponding symptoms are judged. The peripheral blood vessels have long path and wide distribution. The anatomical structure and blood flow characteristics of arteriovenous vessels are different, and various types and degrees of lesions can occur. The color Doppler ultrasound examination is painless, convenient and timely, and has a great diagnostic value for peripheral vascular diseases. . Not suitable for the crowd Severe blood vessels and heart failure. Adverse reactions and risks No complications.