What happens to power as the ultrasound beam propagates through the body?

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 $24.99Unlock all

Sharpen your skills for the Davies Publishing SPI Test with targeted flashcards and multiple-choice questions, complete with hints and clarifications. Prepare thoroughly for success!

Multiple Choice

What happens to power as the ultrasound beam propagates through the body?

Explanation:
As the ultrasound beam moves through tissue, its power (intensity) decreases because energy is lost to attenuation. Tissue absorbs part of the sound energy and scatters or redirects some of it away from the forward path. Higher frequencies are attenuated more, so energy reaching deeper tissues drops even more quickly. The energy lost from the forward beam becomes heat in the tissue, so less power remains to continue deeper or to produce echoes. That’s why imaging systems use gain adjustments to compensate for this predictable loss with depth. In short, the further the beam travels, the more it is attenuated, so the power decreases.

As the ultrasound beam moves through tissue, its power (intensity) decreases because energy is lost to attenuation. Tissue absorbs part of the sound energy and scatters or redirects some of it away from the forward path. Higher frequencies are attenuated more, so energy reaching deeper tissues drops even more quickly. The energy lost from the forward beam becomes heat in the tissue, so less power remains to continue deeper or to produce echoes. That’s why imaging systems use gain adjustments to compensate for this predictable loss with depth. In short, the further the beam travels, the more it is attenuated, so the power decreases.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy