What does megahertz (MHz) indicate in ultrasound therapy?

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Explore the BOC Domain 4 Therapeutic Modalities Test. Engage with multiple-choice questions and in-depth explanations to fully grasp treatment and rehab topics. Prepare effectively!

Multiple Choice

What does megahertz (MHz) indicate in ultrasound therapy?

Explanation:
Megahertz shows how fast the ultrasound wave vibrates—it's the frequency, i.e., the number of million cycles per second. This tells you how quickly the wave oscillates and, in therapy, how deep and how well you can resolve the treated area: higher frequency means finer detail but shallower penetration, while lower frequency goes deeper but with less precision. It is not a measure of the energy delivered (that’s intensity) and it doesn’t describe beam density.

Megahertz shows how fast the ultrasound wave vibrates—it's the frequency, i.e., the number of million cycles per second. This tells you how quickly the wave oscillates and, in therapy, how deep and how well you can resolve the treated area: higher frequency means finer detail but shallower penetration, while lower frequency goes deeper but with less precision. It is not a measure of the energy delivered (that’s intensity) and it doesn’t describe beam density.

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