Ultrasound diagnosis type detailed explanation
Ultrasound diagnosis is a non-invasive, painless, convenient, and intuitive effective inspection method. It is widely used and has a great impact. It is called the four major medical imaging technologies together with X-ray, CT, and magnetic resonance imaging. According to the classification of medical ultrasound equipment system, it mainly includes type A, type B, type D, type M, etc. From the perspective of development trend, ultrasound has been progressing to color display and three-dimensional display.
(1) A-type (Amplitude Mode) ultrasound diagnostic method
A-mode ultrasound or A-mode ultrasound, also known as ultrasound oscillometric diagnostic method or amplitude modulated ultrasound diagnostic method. It displays ultrasound echo signals in the form of waves. It belongs to one-dimensional ultrasound and has one-dimensional limitations, that is, the amount of detection information is small and the blindness is large. Since the development of B-ultrasound, it has been gradually abandoned and clinically eliminated.
(2) B-mode (Brightness Mode) ultrasound diagnostic method
B-mode ultrasound or B-mode ultrasound, also known as ultrasound tomography. It transmits ultrasonic waves through an ultrasonic probe, so that the ultrasonic waves meet the barriers and return sound waves, and use a computer to collect these echo waves and convert them into two-dimensional images, which are finally displayed on the screen in the form of grayscale (that is, light and dark spots). B-ultrasound can perform real-time imaging and is widely used in the diagnosis of diseases of various tissues and organs, such as cardiovascular system diseases, hepatobiliary diseases, kidney and bladder diseases, reproductive system diseases, spleen lesions, ophthalmic diseases, endocrine gland lesions and other soft tissue diseases diagnosis of disease. The most famous is the examination of the fetus during pregnancy. However, the images obtained by B-ultrasound through the ultrasound probe are black and white, and only the tissue structure of each organ can be observed, and the approximate size of the organ or lesion can be measured.
(3) M-type (Motion Type) ultrasonic diagnostic method
M-mode ultrasound, also known as ultrasonic spot scanning method, is a uniaxial measurement of the curve of distance over time. It just adds a slow-scan sawtooth wave to the sound image, so that the echo signal moves and scans from left to right. The vertical direction represents the depth of the human body, and the horizontal direction represents time. M-mode ultrasound is mainly used in the examination of the cardiovascular system, displaying the motion echo curve of each layer of the heart, dynamically understanding the morphological structure and functional status of the cardiovascular system, and obtaining the corresponding technical indicators of cardiovascular physiology or pathology. It is the same as that of Ultra A, which both reflect the one-dimensional spatial structure.
(4) Color Doppler Ultrasound Diagnosis
Generalized color Doppler ultrasound, commonly known as color Doppler ultrasound. Color Doppler ultrasound is not a "color B-ultrasound" in the literal sense. It is just based on ordinary B-ultrasound, through the processing of Doppler signals, and the application of color Doppler ultrasound detection and diagnosis technology to obtain color Doppler ultrasound. blood flow image (i.e. "CDFI"). Color Doppler ultrasound is actually black and white, so it's called color Doppler ultrasound because it uses color to mark indicators such as the heart and blood flow. The resolution of color Doppler ultrasound will be higher than that of general B, so when more detailed examinations are required, more doctors are willing to use color Doppler ultrasound to check. Color Doppler ultrasound not only has the advantages of two-dimensional ultrasonic structural images, but also provides rich information on hemodynamics. Its practical application has been widely valued and welcomed, and it is clinically known as "non-invasive angiography".
(5) Three-dimensional (3D) color ultrasound and four-dimensional (4D) color ultrasound diagnostic methods
Three-dimensional (3D), four-dimensional (4D) color Doppler ultrasound is a medical imaging technology developed in recent years, in which three-dimensional (3D) color Doppler is a two-dimensional image through a special probe for three-dimensional image synthesis to display an intuitive three-dimensional image, providing a higher ratio than two. Ultrasound is more informative. 3D color Doppler ultrasound is mainly used for the research and clinical diagnosis and treatment of heart diseases, and has certain applications in obstetrics and gynecology, ophthalmology, abdominal and peripheral vascular imaging, etc. "parameters, also known as real-time "three-dimensional (3D)". This revolutionary technology can acquire 3D images in real time, surpassing the limitations of traditional ultrasound. It provides a wide range of applications including abdomen, blood vessels, small organs, obstetrics, gynecology, urology, neonatal and pediatrics, etc. It can display real-time dynamic images of unborn babies, or real-time activities of other human internal organs. image.
With the advancement of medicine and the development of ultrasound technology, a variety of new medical ultrasound equipment will continue to emerge, and ultrasound diagnosis will be more and more used in clinical practice.
