Foundation Lectures

Question 1

Are the displacements caused by pneumothorax more obvious on an inspiratory or expiratory film?

Answer 1

Expiratory

Question 2

What contrast is typically used with MRI?

Answer 2

Gadolinium

Question 3

Why are brain tumours more dense on contrast CT?

Answer 3

Contrast leaks out of the tumour capillaries because their BBB is more compromised

Question 4

What does anechoic mean?

Answer 4

Produces no echos - appears black on image

Question 5

What is the number of ant. ribs that can be seen on a CXR of normal lungs?

Answer 5

5-6.5

Question 6

What is distinct about pleural effusion?

Answer 6

Meniscus conture of the opacity

Question 7

How does fluid appear in T2 MRI?

Answer 7

Bright

Question 8

What are windows in CT scan examination?

Answer 8

The rangeof hounsfield units in which an image is viewed. Can determine what tissues will be seen

Question 9

Does pathology appear bright in T1 or T2 weight MRI?

Answer 9

T2

Question 10

Are urinary tract stones hyper or hypodense on CT?

Answer 10

Hyperdense

Question 11

How does fluid appear in T1 MRI?

Answer 11

Dark

Question 12

How do hyperechoic or more echogenic structures appear on US?

Answer 12

Whiter

Question 13

Fluffy opacity is usually caused by what?

Answer 13

Fluid in alveolar

Question 14

A starburst pattern or Codman’s triangle in the periosteum indicates what is happening with bone growth?

Answer 14

Rapid new bone growth is out stripping the ability of the periosteum to compensate

Question 15

What is an exostosis?

Answer 15

Abnormal outgrowth of bone

Question 16

What does endosteal refer to?

Answer 16

Damage to the inner surface of the cortex of bone

Question 17

What is a swimmer’s view?

Answer 17

Lateral x-ray of cervical spine with one arm up and one down

Question 18

Is density or intensity of signal used in describingMRI?

Answer 18

Intensity

Question 19

Is density or intensity of signal used in describingCT?

Answer 19

Density