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The time from the start of one pulse to the start of the next pulse is termed:

Duty factor is:

For continuous wave ultrasound, the beam is always “on” and the pulse average and temporal average intensities are [a].

A typical value for the duty factor of a continuos wave used in diagnostic imaging is:

The beam does not have the same intensity at different locations.

What is the value of the duty factor for continuous wave ultrasound?

A pulsed beam has different intensities at different times.

Pulse duration increases if the period of a cycle:

__________ refers to the physical space or distance the beam occupies.

Which of the following does not change when the operator changes the imaging depth?