Radiology Flashcards
What is the mnemonic for reading head CTs?
Blood Can Be Very Bad
Blood (SDH, EDH, IPH, SAH)
Cisterns (Sylvian, quadrigeminal)
Brain (masses, shift)
Ventricles (large, small)
Bone (fractures)
Where is the quadrigeminal cistern?
Between the cerebellum and the midbrain
On a CT, if material is the same shade you say that it is _____-densee.
iso
Upward deviation of the R bronchus in the setting of blunt trauma suggests what pathology?
Aortic disruption
On a chest CTA, what are signs of RV strain?
- PA trunk > 3 cm
- RV > LV
- Septum flattened toward the LV
Why does V/Q have a higher exposure of radiation to fetuses compared to CTA?
In V/Q, the radiation comes from the injected nuclear dye which sits in the bladder, directly next to the uterus. The radiation in CTAs comes from the scanner which can be shielded with a lead apron.
What is the typical CXR for CF?
Hyperinflated
Reticular opacities worse in the upper lung fields
Air bronchograms
True or false: tunneled lines are subclavians.
False
They are (usually) IJs that go over the clavicle.
The carina sits at what vertebral level?
T6
(C6rina)
_____________ is a sign of patellar tendon rupture.
Patella alta
What does HIDA stand for?
Hepatobiliary iminodiacetic acid
What is the conversion of Gray to rad?
Both are units of radiation exposure. Gray is international standardized. rad is conventional.
1 Gray is 100 rad
What CXR findings suggest interstitial edema?
Lines that extend to the pleura (Kerley B lines)
Pulmonary vessels don’t extend to the pleura and should not be seen < 5 mm from the thoracic wall.
What is the sign of pulmonary venous congestion on CXR?
Prominent superior vascular markings (should be less than inferior)
What body habitus pathology can mimic pneumothorax and subcutaneous emphysema?
Skin folds
A rolled over piece of skin can mimic both. The key to differentiating the two is to look at the pleural edge: a normal pneumothorax will have a thin pleural edge; a skin fold will have a thickened, hyperdense stripe of tissue.
Collapse of the RUL due to a mass will lead to the _____________ sign.
Golden S
