Which parameter primarily determines depth of penetration in ultrasound?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the Electrotherapy US Test. Study with quiz questions, flashcards, and explanations for each answer. Enhance your understanding and boost your confidence to excel in your examination!

Multiple Choice

Which parameter primarily determines depth of penetration in ultrasound?

Explanation:
Penetration depth with ultrasound is governed by the frequency. Lower frequencies travel farther because they’re less rapidly attenuated by tissue, so energy reaches deeper structures. Higher frequencies are absorbed more quickly and don’t penetrate as deeply, though they offer better surface resolution. That’s why deeper targets are treated with about 1 MHz, while superficial targets use around 3 MHz. The other parameters—ERA, time, and power—affect the area covered, duration of exposure, and heating intensity, but they don’t set how deep the ultrasound goes.

Penetration depth with ultrasound is governed by the frequency. Lower frequencies travel farther because they’re less rapidly attenuated by tissue, so energy reaches deeper structures. Higher frequencies are absorbed more quickly and don’t penetrate as deeply, though they offer better surface resolution. That’s why deeper targets are treated with about 1 MHz, while superficial targets use around 3 MHz. The other parameters—ERA, time, and power—affect the area covered, duration of exposure, and heating intensity, but they don’t set how deep the ultrasound goes.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy