MYTUTOR SUBJECT ANSWERS

275 views

What determines the acoustic impedance of a material and why is it useful in understanding ultrasound imaging?

Acoustic impedance is the density of a material multiplied by the speed of sound in the material.
Knowing these two values allows use to calculate how much of the sound energy is reflected at an interface between two materials, or two different types of tissue in the body. The greater the difference, the more reflection. This is the reason for the use of coupling gel between the scanner probe and the skin, removing trapped air, to reduce reflection of ultrasound at the skin, by reducing the acoustic impedance difference.

David A. A Level Physics tutor, GCSE Physics tutor, A Level Maths tut...

8 months ago

Answered by David, an A Level Physics tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

56 SUBJECT SPECIALISTS

£20 /hr

Noam T.

Degree: Mathematics with Mathematical Physics (Bachelors) - University College London University

Subjects offered: Physics, Maths

Physics
Maths

“About Myself: I am an undergraduate student at UCL studying Mathematics with Mathematical Physics. Hoping to go into research after my degree, I have a true passion for my subjects and my aim is to pass on that passion to students in ...”

£22 /hr

Abi R.

Degree: Engineering (Bachelors) - Exeter University

Subjects offered: Physics, Maths+ 3 more

Physics
Maths
Geography
Design & Technology
-Personal Statements-

“About me: I'm in my first year at the University of Exeter studying Mechanical Engineering. My favourite subjects are Maths & Science and my physics teacher is who inspired me to really love teaching others. He was great at using ana...”

£20 /hr

Dan B.

Degree: MPhys Physics (Masters) - Exeter University

Subjects offered: Physics, Maths

Physics
Maths

“Hi I'm Dan and I'm in the first year of a four-year MPhys Physics degree at the University of Exeter. I am very patient and will tailor the sessions' content and pace to suit your individual needs...”

About the author

£20 /hr

David A.

Degree: Medical Physics MSci (Masters) - University College London University

Subjects offered: Physics, Maths+ 1 more

Physics
Maths
Further Mathematics

“About me I have just finished my final exams for my masters year of my Medical Physics MSci at UCL, and I am looking forward to starting training in the NHS as a medical physicist! Tutoring I have plenty of spare time and energy this ...”

MyTutor guarantee

You may also like...

Posts by David

How is a piezoelectric crystal used to generate waves of ultrasound?

There are three boxes and one has a prize inside. You are told to choose a box. One of the other boxes is then opened, showing that it is empty. You are given the option to switch your choice to the other remaining box. Should you switch? Why?

What determines the acoustic impedance of a material and why is it useful in understanding ultrasound imaging?

What is 3!/5! written in standard form?

Other A Level Physics questions

What is specific heat capacity?

What's the highest height a ball thrown straight up will reach?

Is Pluto a planet?

What are the main causes of energy loss in a transformer?

View A Level Physics tutors

Cookies:

We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok