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A sound wave is created by a transducer, reflects off an object, and returns to the transducer.  The go return time is 130µs.  What is the maximum PRF?

What is the equation for acoustic impedance?

The maximum imaging depth (depth of view) during an ultrasound exam is 10 cm. The sonographer adjusts the imaging depth to 20 cm. What happens to pulse repetition period? 

A sound wave with an intensity of 50 W/cm2 strikes a boundary and is totally refelcted. What is the intensity reflection coefficient?

Snell’s law can be applied to the surface of a transducer to determine the beam profile of the wave that emanates from the surface.

Operating frequency of a transducer is directly related to the:

More attenuation will occur with

Sound that is traveling through a medium with an interface at 90 degrees and continues to travel to the next medium. The impedance of the first and second medium are nearly identical.  What percentage of the intensity is transmitted?

Media A and Media B have the same densities.  The speed in Media A is 10% higher than Media B.  Which of the two mediums have the higher acoustic impedance?

Which of the following imaging modalities demonstrates the highest intensity?