Week 7 Elastography

Question 1

What is the basics of elastography?

Answer 1

tool used in diseased tissues e.g. tumours, with areas stiffer than surrounding normal tissue

Question 2

What does Strain do?

Answer 2

Provides information on strain-estimation of elastic modulus. However, is challenging and only done in labs.

Question 3

strain relies on…. and measurement of the…..

Answer 3

1. compression of tissues

2. Resulting tissue deformation & strain

Question 4

Strain is also known as what?

Answer 4

Static method

Question 5

What does shear-wave technique rely on?

Answer 5

generation of shear waves & measurement of shear wave VEL

Question 6

What can be estimated with shear wave technique?

Answer 6

Elastic modulus

Question 7

list the 3 main points of what elastography is.

Answer 7

• tissue to resist deformation w/ applied force & transform back to original shape after force removal
• Imaging modality mapping elastic properties & properties of soft tissue
• Recent technique - pathological process alters the elastic properties of tissue

Question 8

Describe Hooke’s Law

Answer 8

states that strain in solid is proportional to applied stress w/ elastic limit of that solid.