Medical ultrasound scanner, also known as ultrasound diagnostic instrument, is a medical device that uses high-frequency sound waves to non-invasive detect the internal structure of the human body. Since the early 1980s, medical ultrasound scanners have played an important role in medical imaging diagnosis, especially in fields such as prenatal examination of pregnant women, cardiovascular disease, and tumor detection, becoming indispensable tools.

2、 The principle of medical ultrasound scanner

The core principle of medical ultrasound scanners is to use specific frequency sound waves (usually in the range of 2MHz to 10MHz) to non-invasive detect human tissues. When these high-frequency sound waves encounter different organizational structures within the human body, they will reflect back specific signals. These reflected signals are captured by the receiver and converted into visible images through computer processing. By analyzing these images, doctors can intuitively understand the internal structure and morphology of the human body for diagnosis.

The working principle of a medical ultrasound scanner is mainly divided into three steps: first, it emits high-frequency sound waves, which are emitted by the probe on the surface of the human body; Next is the reception of reflected signals, which are received by the probe and transmitted to the processing circuit; Finally, it is the formation of the image, where the processing circuit converts the received signal into an image and displays it on the display.

3、 The Technology of Medical Ultrasonic Scanner

The technology of medical ultrasound scanners continues to develop, from the initial A-type scanner to advanced technologies such as B-type, M-type, color blood flow imaging, 3D and 4D, which have significantly improved the image quality, resolution, and diagnostic range of medical ultrasound scanners.

The A-type scanner was the earliest ultrasonic scanner, which could only display a waveform of reflected echoes and could not form an image. The B-type scanner can form a two-dimensional flat image, which can clearly display the internal structure and morphology of the human body. The M-type scanner can display the dynamic changes in the internal structure of the human body by adding a time dimension on top of the B-type.

Color blood flow imaging technology enables medical ultrasound scanners to display blood flow in blood vessels, which is of great value for the diagnosis of cardiovascular diseases, tumors, and other diseases. 3D and 4D imaging technologies are further developed on the basis of 2D imaging, which can provide more three-dimensional images and help doctors judge the condition more accurately.

In addition, the probes of medical ultrasound scanners have undergone multiple technological innovations. From the initial single crystal probe to the current polycrystalline probe, focusing probe, linear array probe, etc., the resolution and imaging effect of ultrasonic scanning have been continuously improved. At the same time, the frequency of the probe is constantly increasing, allowing ultrasound to penetrate shallower human tissues and detect deeper situations.

4、 The Application of Medical Ultrasonic Scanner

Medical ultrasound scanners, as a non-invasive, fast, and accurate diagnostic tool, are playing an increasingly important role in the field of medical imaging diagnosis. It has a wide range of applications, including the following aspects:

Prenatal examination of pregnant women: Medical ultrasound scanners can detect the shape of the fetus by emitting high-frequency sound waves, measure various physiological indicators of the fetus, such as fetal position, head circumference, abdominal circumference, limb length, etc., in order to confirm the health status of the fetus. At the same time, 3D and 4D ultrasound technology can present fetal images in a more three-dimensional and clear manner, allowing doctors to more accurately assess the condition of the fetus.

Cardiovascular and cerebrovascular diseases: Medical ultrasound scanners can clearly display the structure and function of the heart, which is of great value for the diagnosis of cardiovascular and cerebrovascular diseases. For example, by measuring the thickness, movement status, valve function, etc. of the heart, it is possible to diagnose cardiomyopathy, valvular heart disease, etc. Meanwhile, ultrasound technology can also display lesions such as vascular stenosis and arteriosclerosis.

Tumor detection: Medical ultrasound scanners can detect tumors in the human body, such as liver tumors, breast tumors, thyroid tumors, etc. By observing information such as the size, shape, and location of tumors, reliable diagnostic evidence can be provided for doctors.

Other applications: Medical ultrasound scanners are also widely used in fields such as brain diseases, musculoskeletal system diseases, digestive system diseases, etc., providing important support for doctors' diagnosis. For example, in the diagnosis of brain diseases, medical ultrasound scanners can display the condition of cerebral blood vessels, helping doctors determine whether there is a cerebrovascular disease. In the diagnosis of musculoskeletal system diseases, medical ultrasound scanners can display damage to tissues such as muscles and ligaments, providing a basis for doctors to develop treatment plans. In the diagnosis of digestive system diseases, medical ultrasound scanners can detect the gastrointestinal tract through endoscopy and other methods, helping doctors determine the nature and degree of gastrointestinal diseases.

5、 Conclusion

In summary, medical ultrasound scanners, as a non-invasive, fast, and accurate diagnostic tool, are playing an increasingly important role in the field of medical imaging diagnosis. It is widely used in prenatal examinations for pregnant women, cardiovascular and cerebrovascular diseases, tumor detection, and other aspects, providing important support for doctors' disease diagnosis. With the continuous development of technology, the technology of medical ultrasound scanners will continue to progress, bringing greater contributions to the cause of human health.