Ultrasound to diagnose vascular function
Ultrasound diagnosis mainly uses the reflection principle of ultrasound, and combines the knowledge of physiology, anatomy, pathological anatomy and clinical medicine to make a general or positive diagnosis of the diseased part, nature or dysfunction.
The application of color Doppler flow imaging technology has brought the ultrasonic diagnosis technology to a new level, which is known as non-invasive angiography.
Vascular ultrasound is a subspecialty in the field of ultrasound, involving the most extensive areas. Ultrasound examinations of many organs involve blood vessels and blood flow.
The Ultrasound Branch of the Chinese Medical Doctor Association classifies the vascular ultrasound examination sites into three parts in the vascular ultrasound examination guidelines: head and neck vessels, abdominal vessels, and extremity vessels.
Vascular ultrasound can display the anatomical structure and blood flow information of blood vessels in three ways: two-dimensional gray-scale images can display the anatomical structure information of blood vessels, such as the inner diameter, shape, abnormality of the vessel wall, whether there is thrombus, etc.; color Doppler ultrasound It can qualitatively display the flow velocity, direction, and abnormal blood flow in the blood vessel; Spectral Doppler can record the changes of the blood flow in the blood vessel, quantitatively display the blood flow velocity, and calculate the blood flow. Currently used color Doppler ultrasound diagnostic equipment has these three imaging functions.
