For continuous wave ultrasound, the temporal peak intensity equals the temporal average intensity.

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Multiple Choice

For continuous wave ultrasound, the temporal peak intensity equals the temporal average intensity.

Explanation:
Continuous wave ultrasound is emitted without interruption, so the intensity remains constant over time. The temporal peak intensity is simply that constant value, and the temporal average is the long-time average of the same constant. Since there are no off periods to lower the average, they are identical. If the beam were pulsed, the duty factor would cause the temporal average to be smaller than the peak, but in continuous wave mode there’s no duty-cycle reduction.

Continuous wave ultrasound is emitted without interruption, so the intensity remains constant over time. The temporal peak intensity is simply that constant value, and the temporal average is the long-time average of the same constant. Since there are no off periods to lower the average, they are identical. If the beam were pulsed, the duty factor would cause the temporal average to be smaller than the peak, but in continuous wave mode there’s no duty-cycle reduction.

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