ARDMS SPI

Materials used for the matching layer of a transducer must have an impedance between impedance levels of the ______________ Correct Ans ~ skin and PE element Which of the following is an abnormality that would lead to an imcrease in the Reynolds number? Correct Ans ~ stenosis of the vessel If a 3.5 MHz wave is transmitted through the media listed below, the longest wavelength will be seen in the wave moving through ____________ Correct Ans ~ bone The speed of sound is fastest in bone. Longer wavelengths occur with faster propagation speeds If you are using a transducer with a 100 microsecond pulse repetition perios, a Doppler shift greater than ____________ will lead to aliasing on the display. Correct Ans ~ 5 kHz