What is the doppler stethoscope?
The stethoscope is a tool that allows people to hear sound inside the object, and Doppler Stetoscope is a special variety. Regular stethoscopes that use many medical experts intensify the sound produced by the object. On the other hand, Doppler's stethoscope can send sound waves to the body and register a frequency at which it bounces back. The shift of the frequency of a moving object, such as the heart inside the chest of a person or an ambulance that travels towards a traffic junction, is called the Doppler effect. Compared to a conventional stethoscope, Doppler's stethoscope is more useful in environments with high ambient sound, for example in a helicopter.
The sound travels in the wave and can have different frequencies. The frequency is how many times one wave repeats in the set time period. The sound is measured in Hertz (Hz) units, which individually represent one complete wave cycle per second. People can normally hear sounds of 20 to 20,000 Hz, but the noise that the body is doing is usually between 100 and 200 Hz. These soundY include heart rhythm and breathing, essentially caused by the movement of the participating organs. The heart takes care of and relaxes to the pumping of blood and the lungs spread and retreat to set out in the air.
Conventional stethoscopes are placed on the skin and the doctor then listens to the reinforced sounds that the body makes. The Doppler stethoscope is also placed on the body, but it produces the sound in the ultrasonic frequency range and sends these waves to the body. Ultrasound denotes any sound above the highest hearing limit of 20,000 Hz for people. Although the doctor does not hear ultrasound jumping back from the relevant organs, the Doppler Stetoscope changes ultrasound to an audio signal that the doctor can hear.
For Doppler Stetoscope, such as the lungs and circulatory system, only moving parts of the body are suitable, because it is necessary to move the object to the Doppler effect. When the sound of the producing object approaches everything thatHe listens to him, the frequency of the heard sound will increase; When the object moves further, it decreases. This effect is used by standby services where sirens sound different if they approach closer or if they move.
When the ultrasound bounces back from the moving part, it turns into a frequency depending on how far the part is at that time. For example, the deflated lungs are further from the front of the chest than the inflated lungs, and therefore ultrasound detects a change in frequency. When he registers the change, he changes the sound that the doctor hears.
Compared to conventional stethoscopes, Doppler Stetoscope has one significant advantage. He hears an ultrasound he produces himself and does not hear a majority of noise already present in the environment. In the noisy place of the stethoscope as in combat situations as in combat situations as an emergency medical helicopter or in combat situations, it provides a more accurate and clearer image of the health of the individual patient. It also has an application in a fetal ultrasound where it can be used to detect heartsthe child's rhythm in the womb.