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Protocols - Chest > Chest 1 > Flashcards

Chest 1 Flashcards

1
Q

What are the 3 divisions of chest anatomy?

A

-bony thorax
-respiratory system
-mediastinum

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2
Q

Protective framework

A

Bony thorax

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3
Q

Lungs and airway

A

Respiratory system

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4
Q

Space between lungs

A

Mediastinum

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5
Q

What vertebral level is the vertebra prominence?

A

C7
(Seen at T1 on AP/PA)

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6
Q

What vertebral level is the jugular notch?

A

T2-3

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7
Q

What vertebral level is the xiphoid tip?

A

T9-10

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8
Q

What are the 4 divisions of the respiratory system?

A

Pharynx
Trachea
Bronchi
Lungs

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9
Q

Why is it easier for foreign bodies to enter the right bronchus?

A

It is shorter and wider
Also more vertical
(This is important for pediatric imaging)

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10
Q

Superior portion of the lungs

A

Apex

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11
Q

Inferior portion of the lungs

A

Base

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12
Q

What part of the lungs rests on the diaphragm?

A

Base
(Power in the back and sides than in front)

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13
Q

Where are the costopherenic angles located

A

Sides of the lungs

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14
Q

What is the medial border of the lungs?

A

Hilum

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15
Q

How many lobes does the right lung have?

A

3

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16
Q

How many lobes does the left lung have?

A

2

17
Q

The ratio of the diameter of the heart at its widest point to the maximum width of the thoracic cavity, assessed by examining a chest xray

A

CTR- cardiac thoracic ratio
(The normal ratio is less than 1:2)

18
Q

Why is it best to perform an erect chest xray?

A

Allows diaphragm to move down further, demonstrates air-fluid levels, prevents engorgement of pulmonary vessels - related to size of hilum

19
Q

Why is the recommended SID for a chest at least 72”?

A

To minimize magnification of the heart and increase recorded detail

20
Q

Why is a high kV used for a chest xray?

A

For low contrast, to increase gray scale contrast

21
Q

Vasculature

A

Lung markings

22
Q

What is the preferred grid for a chest xray, why?

A

12:1
To reduce the scatter created by the high kV

23
Q

What AEC cells are selected for a PA projection?

A

Left and right

24
Q

What AEC cell is used for a lateral chest?

A

Center

25
Q

Why is a short exposure time required for a chest xray?

A

To reduce motion (heart beat)

26
Q

How many ribs should be seen above the diaphragm in a PA chest?

A

10

27
Q

How many thoracic vertebrae should be seen above the diaphragm in a lateral chest?

A

11 thoracic vertebrae

28
Q

As a general rule, in chest radiography, what kV and up requires the use of a grid?

A

Greater than 100kv

29
Q

If only one AEC cell can be chosen, which on would it be for a PA chest

A

Right
Because heart is on the left

30
Q

What 3 dimensions increase during inspiration?

A

Vertical
Transverse
AP dimension

Protocols - Chest (5 decks)

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