Black and white ultra, color Doppler and four - dimensional difference

What is color Doppler
   Color Doppler ultrasonography usually uses autocorrelation technology for Doppler signal processing. After color coding, the blood flow signals obtained by autocorrelation technology are superimposed on two-dimensional images in real time to form color Doppler ultrasound blood flow images. Color Doppler ultrasound (color Doppler ultrasound) has the advantages of two-dimensional ultrasound structure image and provides abundant hemodynamics information at the same time. Its practical application has been widely valued and welcomed.
   Advantages of color Doppler
   1. It can quickly and visually display the two-dimensional plane distribution state of blood flow.
   2. It can display the direction of blood flow.
   3. It is good for identifying arteries and veins.
   4, is conducive to the identification of vascular lesions and non-vascular lesions.
   5. It is helpful to understand the nature of blood flow.
   6. It is convenient to understand the time phase and velocity of blood flow.
   7. Reliable detection of shunt and backflow.
   8. The origin, width, length and area of the blood stream can be quantitatively analyzed.
   Black and white ultra, color Doppler and four - dimensional difference
   1, black and white super display is a two-dimensional image profile;
   2, color Doppler is mainly on the basis of two-dimensional images, more than a color Doppler function, convenient to detect the direction of blood flow to determine the artery and vein, analysis of blood flow for the disease of blood supply.
   3. Four-dimensional ultrasound mainly detects fetal development with or without deformities. The most important thing is to present three-dimensional images of the fetus through two-dimensional images, so as to see the facial expressions and limbs of the fetus in the belly.
   4, 4D can also be divided into real-time 3D and static 3D. Dynamic 3D refers to the similar animation form with the probe scanning image, stereo image is real-time dynamic. Static 3D refers to the image of a three-dimensional image synthesized after scanning, and the image is presented in the way of a picture.
   

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