Radiology Module

Question 1

Describe PA CXR

Answer 1

NAME?

Question 2

What does an AP CXR show?

Answer 2

Magnification of the heart and widening of mediastinum

Question 3

Purpose of lateral decubitus CXR

Answer 3

To assess volume of and mobile vs. loculated pleural effusion

Question 4

What makes a CXR technically adequate?

Answer 4

FAN-Full inspiration (diaphgram at level of 8-10 posterior rib, 5-6 anterior rib)-Adequate penetration-No rotation

Question 5

Silhouette sign

Answer 5

Elimination of lung/soft tissue interface caused by a mass or fluid

Question 6

Air bronchogram

Answer 6

-Tubular outline of an airway-Made visible by filling of SURROUNDING alveoli (w/fluid or exudates)

Question 7

Define atelectasis

Answer 7

Collapse or incomplete expansion of lung

Question 8

Earliest CXR finding of congestive heart failure

Answer 8

Cardiomegaly (increased cardiothoracic ratio 50+%)

Question 9

What are Kerley B lines? What condition are they associated with?

Answer 9

-Horizontal lines less than 2 cm long-Due to interstitial edema-Found in CHF

Question 10

What is the bat wing sign?

Answer 10

Sign of pulmonary edema

Question 11

Describe pneumonia on CXR

Answer 11

Space occupying lesion WITHOUT volume loss

Question 12

How do most PEs present on CXR?

Answer 12

No finding - normal CXR

Question 13

Possible PE findings on CXR?

Answer 13

-Westermark’s sign-Hampton’s hump-Increased size of hilum

Question 14

What is a pneumothorax?

Answer 14

Air inside thoracic cavity but outside of the lung

Question 15

What is the ACR Appropriateness Criteria?

Answer 15

NAME?

Question 16

How to view old and new CXRs?

Answer 16

NAME?

Question 17

Define “satisfaction of search”

Answer 17

Seeing one finding and then you stop looking for more

Question 18

What do you examine for on abdominal x-ray?

Answer 18

BonesStonesGas Mass

Question 19

Which x-rays/views comprise an acute abdominal pain exam?

Answer 19

NAME?

Question 20

Why is an AP CXR included in an acute abdominal pain exam?

Answer 20

It is more sensitive for detecting pneumoperitoneum (free air in peritoneal cavity)

Question 21

Causes of pneumoperitoneum

Answer 21

-Bowel perforation (90%)-Other causes (don’t need surgery)

Question 22

Double wall sign

Answer 22

NAME?

Question 23

What comprises an adequate c-spine x-ray series?

Answer 23

-True lateral view-AP view-Open mouth odontoid view

Question 24

What is a true lateral view of the c-spine?

Answer 24

NAME?

Question 25

How is visualization of the C7-T1 junction enhanced on x-ray?

Answer 25

-Traction on arms (if no injury present)OR-Swimmer’s view (one arm over head)

Question 26

Define subluxation

Answer 26

Malalignment of 1 bone on another

Question 27

Define pseudosubluxation

Answer 27

Physiologic misalignment that normally occurs in children (usually at C2-C3)

Question 28

Jefferson fracture

Answer 28

Compression of C1

Question 29

Hangman’s fracture

Answer 29

Through pars interarticularis of C2

Question 30

Clay shoveler’s fracture

Answer 30

Fracture of a spinous process C6-T1

Question 31

Wedge fracture

Answer 31

Compression fracture

Question 32

Burst fracture

Answer 32

C3-C7 fracture from C2 compression

Question 33

Which fractures occur MC - metacarpal/phalanges OR carpals?

Answer 33

Metacarpal/phalanges (20x more often)

Question 34

Boxer’s fracture

Answer 34

5th metacarpal fracture

Question 35

Bennett fracture

Answer 35

Intra-articular fracture-dislocation of 1st metacarpal base

Question 36

MC fractured carpal?

Answer 36

Scaphoid