The thickness of the active element is ____ of the wavelength of sound in the active element. 

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

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?

The maximum imaging depth during an ultrasound exam is 10 cm.  The sonographer adjusts the imaging depth to 20 cm. What happens to PRF?

Overall compensation gain is set at 36dB.  If the gain is reduced by one half, what will the new gain be?

The distance to a reflector in soft tissue is 15cm.  What is the round trip time to this depth?

Exceeding the Curie Point of a transducer element will result in:

In oblique incidence the sound is ____ at a boundary between two media where propagation speeds are different.

Which of the following is a negative effect of using a dampening material in the transducer assembly? 

The thickness of the ___________ is 1/4 of the wavelength of sound in the matching layer.