Endoscopic ultrasound may be a very unfamiliar term for some people, but it may not be unfamiliar to those who have already been exposed to it. With the advancement of technology, more and more people are beginning to come into contact with this technology. But for this, I still have a vague understanding. What are the main examinations of intracavitary ultrasound? What are the characteristics of color ultrasound?
What are the main examinations of intracavitary ultrasound
Intrauterine ultrasound is mainly used to check whether female friends have cervical diseases. Vaginal ultrasound is a type of intracavitary ultrasound. During the examination, the ultrasound probe is directly inserted into the vagina. Compared with abdominal ultrasound, it has high frequency, high resolution, clear images, convenient examination, no need for urine retention, and can see some lesions that cannot be seen by abdominal methods. General accessory inflammation is not within the scope of ultrasound examination and is only used for cervical inflammation and vaginitis that require this examination.
What are the characteristics of color ultrasound
1、 The relevant technology used in color ultrasound is pulse wave. When the velocity of the detected object is too high, the color of the color stream will be inaccurate, which is significantly inferior to spectral Doppler in quantitative analysis. Nowadays, color Doppler ultrasound instruments all have the function of spectral Doppler, that is, color dual function ultrasound.
2、 Color Doppler Flow Imaging (CDF), also known as Color Doppler Ultrasound Imaging (CDI), obtains echo information from sources consistent with spectral Doppler. The distribution and direction of blood flow are displayed in two dimensions, and different velocities are distinguished by different colors. Dual power Doppler ultrasound system, which displays the position of blood vessels in B-mode ultrasound images. Doppler measures blood flow, and the combination of B-mode and Doppler systems can more accurately locate any specific blood vessel.
1. Blood flow direction is distinguished by zero baseline in spectral Doppler display. Those above the zero baseline indicate blood flow towards the probe, while those below the zero baseline indicate blood flow away from the probe. In CDI, the blood flow direction is represented by color coding, and the red or yellow color spectrum represents the blood flow direction probe (thermochromic); And use blue or blue-green chromatography to represent the blood flow probe (cold color).
2. Blood vessel distribution CDI displays blood flow within the lumen of blood vessels, therefore it belongs to the channel type display and cannot display the vessel wall and outer membrane.
3. CDI can be used to classify the blood vessels of liver cancer nodules by identifying the types of blood vessels in cancer nodules. Distinguish it into blood vessels surrounding the nodule and arc-shaped blood vessels on the inner edge of the nodule. The blood vessels that flow into the nodule, the internal blood vessels of the nodule, and the outflow blood vessels of the nodule.
The above are some knowledge points about color ultrasound that we introduced today. With the development of the times, more and more technologies have entered our lives, making them increasingly convenient. However, only by understanding these things can we better use them. So I hope the above knowledge points about color ultrasound can help everyone better understand it.
