An ultrasound scanner constructs an image by emitting high-frequency ultrasound pulses and receiving the reflected acoustic signals back. It uses the difference between the propagation speed and reflection characteristics of ultrasound waves inside different tissues or objects to form an image. This technology is widely used in the medical field to examine and diagnose organs and tissues inside the body, such as the fetus, heart, and liver of a pregnant woman.
Ultrasonic imaging has many advantages, including non-radiation, non-invasive, real-time imaging, and good repeatability. Therefore, it is widely used in medical, industrial, scientific research and other fields.
It is important to note that ultrasound imaging is capable of providing two-dimensional planar images, but its spatial resolution and image quality may be limited relative to other imaging techniques such as CT scanning or MRI. In addition, ultrasound imaging is also affected by the characteristics and morphology of the object. Therefore, when selecting an imaging technique, the specific application needs and limitations need to be considered.