Ultrasonic scanners construct images by emitting high-frequency ultrasonic pulses and receiving reflected acoustic signals. It uses the difference of the propagation speed and reflection characteristics of ultrasonic waves in different tissues or objects to form images. This technology is widely used in the medical field to examine and diagnose the internal organs and tissues of the body, such as the fetus, the heart and the liver of pregnant women.
Ultrasonic imaging has many advantages, including no radiation, no trauma, real-time imaging and good repeatability. Therefore, it is widely used in medical, industrial, scientific research and other fields.
It should be noted that ultrasonic imaging can provide a two-dimensional plane image, but its spatial resolution and image quality may be limited compared with other imaging technologies such as CT scanning or MRI. In addition, ultrasonic imaging is also influenced by the characteristics and shapes of objects. Therefore, when choosing imaging technology, it is necessary to comprehensively consider the specific application requirements and limitations.