Lesson 1 (Part 2)

Question 1

Echotexture

Answer 1

The characteristic pattern or structure of tissue layers as seen during ultrasonic imaging

Question 2

What are 2 examples of echotexture terms?

Answer 2

1. Homogeneous
2. Heterogenous
   - inhomogeneous

Question 3

Homogeneous

Answer 3

Even echogenicity throughout the structure

Question 4

Inhomogeneous (heterogeneous)

Answer 4

Contains mixed echos in the same structure

Question 5

Contour

Answer 5

Term used to describe the border of a structure or organ

Question 6

What are 2 contour terms?

Answer 6

1. Smooth

2. Irregular/ lobulated

Question 7

Size

Answer 7

Rough measurements of the structure or organ

- normal range

Question 8

Artifacts

Answer 8

Is a structure in an image which is not directly similar with the actual tissue being scanned
- can also hinder our image

Question 9

What are 2 common artifacts?

Answer 9

1. Shadowing

2. Acoustic enhancements

Question 10

Shadowing

Answer 10

Absorb or attenuates the sound waves more rapidly

Question 11

What is an example of shadowing?

Answer 11

Stones

Question 12

Acoustic enhancement

Answer 12

Sound travels very fast through fluid causing brightness

Question 13

What is an example of acoustic enhancements?

Answer 13

The gall bladder attenuates less sound than surrounding tissue
- appears darker

Question 14

Attenuate

Answer 14

Is the reduction in amplitude of the ultrasound beam as a function of distance through the imaging medium