Lesson 1 (Part 2)

Question 1

Echoic

Answer 1

Containing echos

- brightness

Question 2

Anechoic

Answer 2

Without internal echoes

- black

Question 3

Hyperechoic

Answer 3

Brighter echos than the surrounding echos

Question 4

Hypoechoic

Answer 4

Darker echos than the surrounding echos

Question 5

Isoechoic

Answer 5

Similar echos to the surrounding echos

Question 6

Homogeneous

Answer 6

Smooth

- this is how we should look

Question 7

Heterogeneous

Answer 7

Not smooth

- irregular

Question 8

What is another word for doppler? Why?

Answer 8

1. Duplex

2. Because they are on top of each other

Question 9

Doppler U/S

Answer 9

Uses the change in frequency to detect the speed of an object

Question 10

What happens with the sound of a moving fire truck that gets closer to you?

Answer 10

The sound waves are compressed and closer together which means it get louder

Question 11

Where is vessel blood flow the greatest?

Answer 11

In veins

- the smaller the diameter the faster the flow will be

Question 12

What is speed of flow measured in?

Answer 12

cm/s

Question 13

What is medical imaging with ultrasound called?

Answer 13

Sonography

Question 14

How are 2D scans presented? (2)

Answer 14

1. Linear
   - rectangle
2. Sector
   - pie

Question 15

What is a sector scan composed of?

Answer 15

Many scan lines with a common origin

Question 16

What is the source of the doppler effect?

Answer 16

Blood flow