Prudent practice of sonography involves application of the ________ principle.                

The pin targets (denoted by the blue arrow) are used when performing which of the following QA tests?

In tissues that do not contain well-defined gas bodies, no effects have been reported for mechanical index values less than approximately: (choose the best answer)

What adjustment was made to create Image B?

There is a greater likelihood of cavitation bioeffects with _________ frequency trasnducers.

When obtaining a heart rate measurement on a fetus (especially during the first trimester), the AIUM requires that which of the following modes be used?

The current limit for output of a diagnostic medical sonography machine is __________________.

There is a greater likelihood of thermal bioeffects with _________ frequency trasnducers.

Which of the following principles states that there must be a decrease in pressure at the area of a stenosis.

Which of the following is the gold standard device for measuring the acoustic output of an ultrasound machine?