Color Doppler ultrasound also known as B-ultrasound, is a medical device. It is suitable for ultrasound examination of various parts of the body, especially for the diagnosis of the heart, limb blood vessels and superficial organs as well as abdomen and maternity.
Doppler ultrasound can be divided into five categories: pulsed Doppler, continuous Doppler, high pulse repetition rate Doppler, multi-point Doppler and color Doppler flow imaging, among which Pulsed Doppler is the most widely used. It uses a series of electronic techniques to display a spectrum of a certain volume (SV) of blood flow at a point in the heart or large blood vessels in real time using a Doppler principle in the case of two-dimensional echocardiographic localization. It is a non-invasive technique that detects intracardiac shunting and reflux. Continuous Doppler can continuously transmit impulses, so it has the ability to measure high-speed blood flow, which has obvious advantages for quantitative analysis of stenosis, regurgitation and shunt lesions in the cardiovascular system.
Basic color: red, green, blue
Red: facing the probe
Blue: back to the probe
Positive turbulence: yellow
Reverse turbulence: close to dark blue
Role: real-time display of spatial information of blood flow signals
Adapt to illness
1, heart disease. Such as congenital heart disease, rheumatic heart disease, coronary heart disease, etc.
2. Limb blood vessels. Such as arteritis, arteriosclerosis, arteriovenous fistula, arteriovenous embolism and so on.
3, body surface organs. Such as breast mass, breast hyperplasia, thyroid tumor, thyroiditis, testicular epididymal tumor, inflammation and so on.
4, abdominal disease. Such as abdominal organ tumors, cirrhosis, biliary stones, urinary stones, tuberculosis and so on.
5, gynecological diseases. Such as uterine fibroids, endometrial lesions, ovarian disease, ectopic pregnancy, pelvic diseases.