Chest Procedures + Anatomy Flashcards
when do we do nect chest?
differential diagnosis involving lung parenchyma
when do we do cect chest?
differential diagnosis involving vascular vs. non-vascular structures or masses
indications for routine cect chest?
- infection
- mass
- empyema
- lung ca
- trauma
- known or suspected congenital abnormalities
- correlate with radiographs
mA and pitch for cect chest?
ATCM/auto (80-240)
pitch is 1.375
anatomy region for cect chest
above lung apices to below costophrenic angles
rate of IV contrast for cect routine chest
80 ml at 3 ml/sec, 50 ml NaCl flush
scan delay for cect routine chest
35 secs
why do we need the saline flush?
to reduce beam-hardening in SVC
indications for nect chest - high reso protocol
- diffuse lung diseases/interstitial lung disease
- fibrosis, scarring of lungs
- emphysema
- inhalation injury
- bronchiectasis
- airway disease
- sacroidosis
- scleroderma
thin sections required for HRCT
=<1.5mm
what algorithm is used for HRCT
edge-enhancing/bone
incremental HRCT
- images with 10mm intervals or more between slices
what % of lung parenchyma is scanned during axial HRCT?
10
anatomy region for CTA chest for PE
apices to below hemidiaphragm
scan direction for CTA chest for PE
caudocranial
mA range for CTA chest for PE
80-835
what is the flow rate for IV contrast used for CTA chest for PE?
70 ml at 4 ml/sec
what level do we do localizer scans for CTA chest for PE
at the carina
demi-facets are found on …
thoracic vertebrae
which vertebral level is manubrium at?
T2, T3
which vertebral level is the sternal angle at?
T4, T5
which vertebral level is the inferior border of the xiphoid at?
T10
superior chest
axial slice
from medial to lateral what’re the vessels seen?
common carotid arteries
internal jugular veins
subclavian veins and arteries
subclavian veins are ___ to subclavian arteries
anterior until they run horizontally, then s. veins are inferior to s. arteries
which vessel is most posterior off the aortic arch?
left subclavian artery
