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Flashcards in Normal CXR Deck (23)
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1

What is the most common accessory fissure of the lung?

Azygous fissure containing the azygous vein

2

In what condition would the costophrenic angle disappear on an CXR?

Pleural effusion

3

The right hemi-diaphragm is usually slightly higher than the left. T/F?

True

4

What is the maximum cardio-thoracic ratio that can be normal in an adult?

50%

5

For what group of adults would it potentially be normal to have a slightly larger cardio-thoracic ratio of 55%?

African American adults

6

In which bronchi is aspiration more likely to occur?

The right main bronchus as its more vertically oriented

7

Pleura are visible on an CXR. T/F?

False

8

Teenagers tend to have a small aortic knuckle. T/F?

True

9

If the aorta-pulmonary window bulges out, this could be a sign of...?

Lymphadenopathy

10

The left hilar point is general higher than the right hilarity point. T/F?

True

11

The lymph nodes in the hilum are usually visible. T/F?

False - these are not usually visible unless enlarged

12

The posterior ribs run horizontally. T/F?

True

13

The anterior ribs run at an angle. T/F?

False

14

Give examples of situations in which emergency CXRs may be performed.

Acute respiratory symptoms
Chest pain
Septic screen
Acute abdomen
Post central line/chest drain insertion

15

Give examples of situations in which elective CXRs may be performed.

Persistent / chronic respiratory symptoms
Pre-operative work up
Metastatic screen
TB contacts

16

What is the standard view used in a CXR?

PA

17

Where would an AP CXR be used?

On a ward or in the ICU

18

Why do you get a better sense of the size of the heart from a PA CXR view than an AP view?

Because in a PA view, the heart is closer to the film

19

How can the degree of inspiration on a CXR be determined?

By counting the ribs

20

How many anterior ribs should be visible on a CXR?

6 anterior ribs

21

How many posterior ribs should be visible on a CXR?

9-10 posterior ribs

22

How can rotation be assessed on a CXR?

Look for the 'teardrop' shape of the spinous processes and assess their distance from each of the clavicles

23

How can you determine if there is good exposure in a CXR?

With good exposure you shouldn't be able to see the vertebra through the heart shallow