Chest Procedures + Anatomy

Question 1

when do we do nect chest?

Answer 1

differential diagnosis involving lung parenchyma

Question 2

when do we do cect chest?

Answer 2

differential diagnosis involving vascular vs. non-vascular structures or masses

Question 3

indications for routine cect chest?

Answer 3

• infection
• mass
• empyema
• lung ca
• trauma
• known or suspected congenital abnormalities
• correlate with radiographs

Question 4

mA and pitch for cect chest?

Answer 4

ATCM/auto (80-240)
pitch is 1.375

Question 5

anatomy region for cect chest

Answer 5

above lung apices to below costophrenic angles

Question 6

rate of IV contrast for cect routine chest

Answer 6

80 ml at 3 ml/sec, 50 ml NaCl flush

Question 7

scan delay for cect routine chest

Answer 7

35 secs

Question 8

why do we need the saline flush?

Answer 8

to reduce beam-hardening in SVC

Question 9

indications for nect chest - high reso protocol

Answer 9

• diffuse lung diseases/interstitial lung disease
• fibrosis, scarring of lungs
• emphysema
• inhalation injury
• bronchiectasis
• airway disease
• sacroidosis
• scleroderma

Question 10

thin sections required for HRCT

Answer 10

=<1.5mm

Question 11

what algorithm is used for HRCT

Answer 11

edge-enhancing/bone

Question 12

incremental HRCT

Answer 12

• images with 10mm intervals or more between slices

Question 13

what % of lung parenchyma is scanned during axial HRCT?

Answer 13

10

Question 14

anatomy region for CTA chest for PE

Answer 14

apices to below hemidiaphragm

Question 15

scan direction for CTA chest for PE

Answer 15

caudocranial

Question 16

mA range for CTA chest for PE

Answer 16

80-835

Question 17

what is the flow rate for IV contrast used for CTA chest for PE?

Answer 17

70 ml at 4 ml/sec

Question 18

what level do we do localizer scans for CTA chest for PE

Answer 18

at the carina

Question 19

demi-facets are found on …

Answer 19

thoracic vertebrae

Question 20

which vertebral level is manubrium at?

Answer 20

T2, T3

Question 21

which vertebral level is the sternal angle at?

Answer 21

T4, T5

Question 22

which vertebral level is the inferior border of the xiphoid at?

Answer 22

T10

Question 23

superior chest
axial slice
from medial to lateral what’re the vessels seen?

Answer 23

common carotid arteries
internal jugular veins
subclavian veins and arteries

Question 24

subclavian veins are ___ to subclavian arteries

Answer 24

anterior until they run horizontally, then s. veins are inferior to s. arteries

Question 25

which vessel is most posterior off the aortic arch?

Answer 25

left subclavian artery