Ultrasound portfolio Research Paper Example | Topics and Well Written Essays - 1750 words

Ultrasound portfolio - Research Paper Example Scientists have to scrutinize on the compression and decompression of ultrasound in the transmitting medium, such as water or air. This is only done successfully when the velocity of the traveling sound is constant while in the transmitting medium. Therefore, a simple explanation denotes that around is the epitome of longitudinal waves considered to be in an oscillating movement, which goes back and forth. The oscillation is considered to be in the same direction as the traveling sound waves, thereby encompassing successive zones of compression (Gent 1997). Similarly, the indulgence of successive zones of compression leads to rarefaction. Fig. 1 Courtesy of Hendrick, W., Hykes, D. and Stachman D. (2005) Ultrasound Physics and Instrumentation. New York: Elsevier-Mosby. In the figure above, it is evident that there is a consistent flow of waves, as reflected from the compression and transverse waves. In this figure above, the top waves denote the compression wave, while the bottom deno tes the transverse wave. This is a consistent flow of sound waves, used in the physical examination of the principles underlying sound waves. The audible frequency in this diagram is considered to be in a kind of consistent frequency, which is used as one of the physical principles of ultra sound. ... Movement in Doppler ultrasound is detected when there is a change in the sound frequency. The sound frequency change is evidently seen as the movement reflects visible change. When sound is exposed to different mediums, it is duly reflected, depending on the reflecting surface. After a reelection, the surface will detect the direction of the sound. In addition to this, the reflecting surface will dictate change in the frequency of sound, thereby changing its frequency over time. Transducers have the ability of generating electric charges when there is an applied mechanical stress or energy to their physics. Therefore, when there id a continuous operation mode in a transducer, then the voltage will have a directly proportional sound wave. However, this only depends on one principle. The basic principle in this part is that, the voltage should never be turned off. In the end, the voltage on a transducer will generate an equal sound wave. On the other hand, some transformers are not ope rated in a continuous mode. This is the pulsed mode, where the frequency has change over time. When the pulses are introduced to the transducer, it produces different wave lengths, depending on the pulsed frequency. In moist cases, the wavelength produced by ringing a transducer is doubled by the thickness. One physical principle underlying ultrasound is that, sound travels around corners. Evidently, human beings and animals have the ability to hear sounds, even when the sound is at a far distance and around corners. This evidently shows that the basic physical principle of sound is negotiating corners. This is scientifically referred to sound diffraction (Bates, 2004). However, there is a