What is the ultrasound doppler?
Ultrasound Doppler is a high -frequency tone emitting technology for measuring its "reflection" from the object of various densities, as well as the movement and speed of everything in the object. It has applications in various fields, including military and industrial, but is best known as a means of medical imaging. The pelvic area of the pregnant woman has semi -solid bones, thick muscle tissue and watery liquid. Ultrasound can distinguish them. In addition, the ability to measure the "doppler shift" in a reflected sound wave can also determine whether blood pumping from the heart of the unborn child is sufficient and healthy. Surfaces and things in their life space. Example Doppler Effect is a car that drives around a stationary pedestrian. As the car is approaching, the sound of its engine is heard to increase more and more to a noticeably higher playground; And as the car passes and recedes, the sound corresponds to the height. Its speed and sound are constant constant; But the sound waves generated by the engine are actually compressed or stretchedabout the movement. A blind pedestrian can evaluate the characteristics of this pitch and make a good determination of the direction and speed of the car movement.
Doppler's effect was theoretically articulated by the Austrian physicist in 1842, but it was not another hundred years when sonography, visual graphs or sound display became an energetic scientific area. Doppler Sonography, requiring continuous measurement of minor changes in discouraged sound frequencies over time, corresponded to more multiple and fast electrical and electronic systems. Improvement of medical devices using Doppler ultrasound continues to develop, especially in their contact probe and their data display.
The touched ultrasound probe is electroacoustic converters, converting electricity into sound energy and vice versa. The sound created by them cannot be heard or felt by people - from 1 to 18 megahertz in the frequencyor, variables to penetrate deeper into human tissues. Doppler's ultrasound could emit a continuous tone, but most models transmit the tone and receive its echoes as a sequence of very fast pulses. The advantage of the latter is that one impulse can also be analyzed, such as converting the time delay of the echo to distance and creating more accurate three -dimensional images.
Most doppler sonograms are digital calculations of electronically coded audio data to the best recreation of the real body anatomy. One area of the ongoing sonographer Y is to clarify and exhaust exactly how each type of human tissue absorbs some and reflects some of all frequencies in the range of these tools. Computer programs for display translation are updated with new, true information.
Medical Doppler ultrasonic device measures the direction and speed of things in the human body with high accuracy. The most common application is blood assessment such as reduced heart rateThe artery or reverse reverse flow of one of its weakened valves. It is also a valuable added tool for monitoring the fetal development in the womb by measuring your own blood circulation and the healthy speed of fluid exchange with the mother.