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RIU 320 Lecture Notes - Lecture 24: Sonographer, Sound, Top

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amethystbear941

30 Apr 2020

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Radiation and Imaging - Ultrasound

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Introduction: parameters describe features of a sound wave. The values of seven parameters are required to completely characterize a sound wave: seven parameters that describe sound waves , period, frequency, amplitude, power, intensity, wavelength, speed, the source of a sound wave is the ultrasound system and transducer. The quantity, or level, of some of the parameters are established by the ultrasound system. The sonographer can adjust the level of some of these parameters, whereas others cannot be changed: other parameters are determined by the tissue through which the sound is traveling. Frequency: the number of particular events that occur in a specific duration of time. For example, the frequency of presidential elections in the. Hertz is another way to say per second : 1 cycle/ second= 1 hertz, 1,000 cycles/ second= 1 khz, 1,000,000 cycles/second= 1 mhz, typical values: in clinical imaging, frequency ranges from approximately 2 mhz to 15mhz.

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