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Flashcards in Respiratory Imaging Deck (23)
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1
Q

Does extrathoracic or intrathoracic air appear denser on a CXR?

A

Intrathoracic air

2
Q

CT densities are given relative to…

A

Water

3
Q

A positive CT density could be…

A

Muscle, bone, contrast, metal

4
Q

A negative CT density could be…

A

Air, lungs, fat

5
Q

A very dense spot on a CXR which does not move could be…

A

Calcium nodule

6
Q

Why do Calcium nodules appear?

A

Usually in response to infection

7
Q

Which type of Imaging may be useful for imaging a suspected collapsed lung?

A

Ultrasound

8
Q

What is meant by a ‘PA radiograph’?

A

Posterior to Anterior

9
Q

In a PA radiograph, what may the patient be asked to do?

A

Raise their arms to get scapulae out of the way

10
Q

What is meant by an AP radiograph?

A

Taken anterior to posterior

11
Q

When are AP radiographs usually taken?

A

Usually performed on the ward (mobile) when the patient is bed-ridden

12
Q

Why are AP radiographs less preferable than PA radiographs?

A

Heart shadow magnified so heart appears enlarged, scapulae may obscure a section of the lungs, patients often unable to take a big enough inspiration

13
Q

Why may a lateral view CXR be used?

A

To see what is going on behind the heart

14
Q

If a patient has adequately inspired, the ends of how many ribs should be visible on a CXR?

A

At least 6

15
Q

What is the condition called in which all major organs are on the opposite side from that expected?

A

Situs inversus

16
Q

Which side of the diaphragm is usually higher up?

A

Right due to liver

17
Q

Name the 9 mediastinal borders.

A

Aorta, pulmonary artery, left auricle, left ventricle, right atrium, trachea, hemidiaphragm, stomach bubble, horizontal fissure

18
Q

Where are mediastinal lymph nodes seen on a normal CXR?

A

They’re not seen if they are normal

19
Q

The lingula is part of which lobe?

A

Left upper lobe

20
Q

In which direction is an axial xray taken?

A

Patient’s feet facing you

21
Q

Which section of the left lung forms the border with the heart?

A

Lingula

22
Q

Which section of the right lung forms the border with the heart?

A

Right middle lobe

23
Q

What is meant by consolidation?

A

Air in the lungs has been replaced by another structure