What are the typical values of period in diagnostic ultrasound?

The correct response regarding the typical values of the period in diagnostic ultrasound is 0.06 to 0.5 microseconds. The period is defined as the time taken for one complete cycle of the sound wave. In diagnostic ultrasound, which uses frequencies typically between 2 MHz and 20 MHz to produce images, the corresponding periods are indeed very short due to the high frequency.

For instance, to derive the period from frequency, you use the formula:

[ \text{Period} = \frac{1}{\text{Frequency}} ]

When applying frequencies in the range of 2 MHz to 20 MHz, the resulting periods will fall within the microsecond range. Specifically:

• At 2 MHz, the period would be 0.5 microseconds.
• At 20 MHz, the period would be 0.05 microseconds.

Thus, the range of 0.06 to 0.5 microseconds encompasses the typical operational periods involved in diagnostic ultrasound, making this the most accurate choice. Recognizing the typical values for ultrasound periods is crucial for understanding acoustic wave properties and their implications in sonography.