Radiology of the Thorax

Question 1

five densities of xray?

Answer 1

air
fat
soft tissue/water
calcification
metal

Question 2

opacity

Answer 2

?

Question 3

consolidation

Answer 3

filling alveoli with junk

Question 4

interstitium

Answer 4

connective tissue throughout the lung

Question 5

atelectasis

Answer 5

volume loss within alveoli

-collapse

Question 6

three divisions of interstitium

Answer 6

bronchovascular
parenchymal
subpleural

Question 7

major pathologic patterns of interstitium

Answer 7

reticular
nodular
septal

Question 8

secondary pulmonary lobule

Answer 8

important for recognizing what you see on CT

Question 9

silhouette sign

Answer 9

??

Question 10

CXR frontal anatomy

Answer 10

trachea
right paratracheal stripe
carina
left mainstem bronchi

Question 11

right paratracheal stripe

Answer 11

thin along side of trachea

where adenopathy will occur

Question 12

carina

Answer 12

splitting of trachea to mainstem bronchi

endotracheal tube placement

Question 13

when kid inhales a peanut?

Answer 13

goes into the right bronchi

Question 14

CXR lateral anatomy

Answer 14

trachea
right upper lobe bronchus
carina
left mainstem bronchus

great for localizing disease

Question 15

left mainstem bronchus

Answer 15

gives you a circle laterally

because it is obliquely oriented

Question 16

3 moguls of mediastinum (left)

Answer 16

aortic arch
main pulmonary artery
left ventricle

AP window

CXR frontal anatomy

Question 17

right mediastinum

Answer 17

superior vena cava
hilum
right atrium

Question 18

azygous arch

Answer 18

creates tear drop over right main stem bronchus

Question 19

mediastinal lines/stripes

Answer 19

CXR frontal anatomy

junctional lines - where lungs meet with eachother medially
azygoesophageal recess - azygous drops down mediastinum along esophagous

Question 20

azygoesophageal recess significance?

Answer 20

it its not straight, can indicate hiatal hernia

Question 21

mediastinum windows?

Answer 21

CXR lateral anatomy
-black

retrosternal
retrotracheal
retrocardiac

Question 22

vessels of mediastinum

Answer 22

CXR lateral anatomy

aorta
left pulmonary artery - above left mainstem bronchus
IVC

Question 23

heart in mediastinum?

Answer 23

CXR lateral anatomy

right ventricle
left atrium

Question 24

left atrium

Answer 24

like a backpack on the heart

Question 25

valve position on CXR

Answer 25

frontal - aortic above mitral

lateral - line from left mainstem bronchus to cardiac recess

• above its aortic
• below or on line mitral

Question 26

CXR frontal anatomy bones?

Answer 26

spine- cervical, thoracic, lumbar vertebrae
ribs - anterior, posterior (and lateral)
clavicles
scapula
humerus

Question 27

looking at ribs?

Answer 27

looking for adequate depth of respiration by counting ribs

Question 28

CXR lateral anatomy bones?

Answer 28

spine - cervical, thoracic, lumar
ribs
sternum
scapula***
humerus

Question 29

closer to the xray beam

Answer 29

casts larger shadow

-therefore, lateral view gives ribs of different sizes

Question 30

ideal frontal CXR?

Answer 30

chest up against film to get heart

Question 31

ideal laterl CXR?

Answer 31

left up against film to get heart

Question 32

frontal CXR anatomy lungs?

Answer 32

?

Question 33

lobar anatomy?

Answer 33

lateral allows localization of mass