The Principle and Application of Ultrasonic Diagnosis Technology

Ultrasonic diagnostic technology is a medical examination technology based on sound wave technology, which is widely used in various clinical fields. It has the characteristics of non-invasive, safe, fast and sensitive, and has become one of the commonly used medical examination methods. This article will introduce the principles and applications of ultrasonic diagnostic technology.

1. The principle of ultrasonic diagnostic technology
Ultrasonic diagnostic technology is to use high-frequency sound waves to examine the human body. Its principle is to generate ultrasonic images according to the different degrees of reflection and absorption of sound waves in different tissues, so as to judge the state of the tissues. The frequency of ultrasound is usually between 1 and 10MHz. The echo is sent out and received by the scanning head, and the echo signal is converted into an ultrasonic image by a computer. The imaging quality and the position of the scanning head, probe frequency, sound wave amplitude, and tissue reflection capabilities related.
When ultrasonic waves propagate in the body, phenomena such as reflection, refraction, and scattering will occur when passing through tissues. Different tissues have different degrees of reflection and absorption of ultrasonic waves, depending on factors such as tissue density, elastic coefficient, and blood vessel distribution. For example, sound waves travel slower in organs such as the liver and spleen than in fat and gas, and sound waves are also blocked in red blood cells.
Using these principles, ultrasonic diagnostic technology can detect internal organs, bones, muscles, blood vessels and other parts, such as abdominal cavity, chest cavity, head and neck, liver, pancreas, heart, lower extremity veins, etc. At the same time, ultrasonic diagnostic technology can also be used to assist in disease diagnosis and surgical operations, such as catheterization, acupuncture bio-tissue examination, etc.

2. Application of ultrasonic diagnostic technology
Ultrasonic diagnostic technology is the most advanced diagnostic technology in today's medical field. It has a wide range of applications, and is non-invasive, non-radiative, and pain-free, and is favored by patients and doctors. Some common ultrasonic diagnostic applications are introduced below:
Ultrasonic diagnostic technology is the most advanced diagnostic technology in today's medical field. It has a wide range of applications, and is non-invasive, non-radiative, and pain-free, and is favored by patients and doctors. Some common ultrasonic diagnostic applications are introduced below:

a. Echocardiography
Echocardiography is an important method in in vitro cardiac diagnosis and can be used to evaluate abnormalities of cardiac structure and function. A sound wave transmitter sends sound waves to the heart through the chest wall to observe heart movement and blood flow. Echocardiography can be used for the detection of structural heart disease, assessment of cardiac function, cardiac hemodynamic examination, etc.

b. Abdominal ultrasonography
Abdominal ultrasonography is the most common ultrasonic diagnostic examination. It can detect the condition of liver, pancreas, gallbladder, spleen, kidney and other intra-abdominal organs. It can also detect abdominal tumors, splenectomy effect evaluation, cholecystitis and other problems

c. Gynecological ultrasonography
Gynecological ultrasonography is an ultrasound diagnosis for women, which can be used to observe the ovaries, uterus, cervix, pelvic cavity, etc. Gynecological ultrasonography can be used for gynecological disease diagnosis, pregnancy testing, ovarian cysts, uterine fibroids and other problems.

d. Ultrasound Interventional Surgery
Ultrasound intervention is a new method of interventional surgery, which is widely used in clinic because of its direct vision and small trauma. At present, common ultrasound interventional procedures include laparoscopic surgery, percutaneous cavity puncture, etc.

e. Application of ultrasonography in orthopedic diseases
The diagnosis and treatment of orthopedic diseases require the support of precise technical means, and the application of ultrasonography in this field is becoming more and more extensive. For example, in the treatment of fractures, ultrasonography can be used to determine the medial and lateral healing of fracture sites to better guide rehabilitation programs. In addition, ultrasonography can be used to improve the surgical positioning accuracy of knee joints, shoulder joints and other parts, and improve the success rate of surgery.

3. Summary
The application of ultrasonic diagnostic technology is very extensive, both in clinical and scientific research are of great significance. It is not only an important tool for diagnosing diseases, but also widely used in surgical operations. In the future development, ultrasonic diagnostic technology will also continue to improve with the development of medical technology, providing better protection for people's health.