Which of the following crystals will produce sound with the lowest frequency? 

The attenuation coefficient for soft tissue using a 10MHz transducer is ________.

The dampening material in a transducer improves the systems lateral resolution.

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? 

If the PRF of a transducer is increased, then the frequency of sound produced by the transducer remain the same.

Which of the following is associated with a broader bandwidth?

For pulsed wave transducers two characteristics of the active element combine to determine the frequency of sound are:  (multiple answers)

The matching layer

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

When researching the biological effects of diagnostic ultrasound, which intensity is most commonly used?