Radiology Flashcards Preview

Hugh's MD2 Foundation > Radiology > Flashcards

Flashcards in Radiology Deck (19):
1

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

Expiratory

1

What contrast is typically used with MRI?

Gadolinium

2

Why are brain tumours more dense on contrast CT?

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

3

What does anechoic mean?

Produces no echos - appears black on image

6

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

5-6.5

6

What is distinct about pleural effusion?

Meniscus conture of the opacity

7

How does fluid appear in T2 MRI?

Bright

8

What are windows in CT scan examination?

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

8

Does pathology appear bright in T1 or T2 weight MRI?

T2

10

Are urinary tract stones hyper or hypodense on CT?

Hyperdense

11

How does fluid appear in T1 MRI?

Dark

12

How do hyperechoic or more echogenic structures appear on US?

Whiter

13

Fluffy opacity is usually caused by what?

Fluid in alveolar

14

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

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

15

What is an exostosis?

Abnormal outgrowth of bone

16

What does endosteal refer to?

Damage to the inner surface of the cortex of bone

17

What is a swimmer's view?

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

18

Is density or intensity of signal used in describing MRI?

Insensity

19

Is density or intensity of signal used in describing CT?

Density