14. Chest XRay Basics

Question 1

opacity

Answer 1

dense structures appear white

Question 2

lucency

Answer 2

less dense structures
appear dark/black

Question 3

costophrenic angle

Answer 3

diaphragm meets ribs

Question 4

costophrenic angle blunting can indicate

Answer 4

small pleural effusion

Question 5

hemidiaphragm

Answer 5

half of diaphragm

Question 6

elevated hemidiaphragm can indicate

Answer 6

abscess
hematoma
tumor
atelectasis
rib fracture

Question 7

kerley lines indicate

Answer 7

pulm edema

Question 8

standard chest XRAY

Answer 8

posterior-anterior (PA)

Question 9

PA chest XRAY

Answer 9

beam pass from posterior to anterior
- source is posterior
- film is anterior

Question 10

AP chest Xray

Answer 10

beam passes through pts from anterior to posterior
- source is anterior
- film is posterior

Question 11

AP and PA images are viewed

Answer 11

looking from the front of pt
(face to face)

Question 12

are AP or PA more common

Answer 12

AP are less common

Question 13

are AP or PA lower quality

Answer 13

AP is lower quality

Question 14

in which view is heart magnified

Answer 14

AP

Question 15

are chest Xrays taken on inspiration or expiration

Answer 15

inspiration

Question 16

deeper inspiration show

Answer 16

more lung
less haziness
less heart enlargement

Question 17

good inspiration on PA CXR should show what?

Answer 17

10-11 posterior ribs

Question 18

a centered image shows

Answer 18

medial ends of clavicles equidistant from midline

Question 19

pneumothorax

Answer 19

hyperinflated lung on one side
tracheal deviation

Question 20

NG tube on CXR

Answer 20

NG descend midline in thorax
sit below diaphragm in gastric bibble

Question 21

gastric bubble

Answer 21

radiolucent rounded area under hemidiaphragm

gas in fundus of stomach

Question 22

NG tube cross what

Answer 22

diaphragm midline

Question 23

central line position

Answer 23

tip of catheter at junction of SVC and RA

Question 24

central line tip too high

Answer 24

thrombus risk

Question 25

central line tip too low

Answer 25

arrythmia

Question 26

ETT tip

Answer 26

5 cm above carina

Question 27

ETT width

Answer 27

2/3 of tracheal diameter
cuff not expanding trachea

Question 28

Breathing

Answer 28

lungs expanded
normal CPAs
normal hemidiaphragms
normal cardiac borders

Question 29

RLL atelectasis

Answer 29

R lower opacification
indistinct heart border
ipsilateral tracheal division

Question 30

LUL atelectatis

Answer 30

ipsilateral tracheal deviation
veil-like opacity
obscure L upper heart border

Question 31

RUL atelectasis

Answer 31

ipsilateral tracheal deviation
R upper zone opacification

Question 32

lung atelectasis

Answer 32

diffuse lung opacification
ipsilateral tracheal deviation

Question 33

bilateral lower lobe atelectasis

Answer 33

bilateral lower zone opacification

Question 34

circulation assessment

Answer 34

mediastinum
- size
- position
- aortic aneyrusm

Question 35

disability assesment

Answer 35

fractures
metastasis

Question 36

exposure assessment

Answer 36

subQ emphysema
free air
misc