Bone Voyage!
This imaging modality is best for visualizing fractures and dense bone structures.
What is CT?
A "thunderclap headache" is a hallmark sign of this condition, often evaluated first with a non-contrast CT.
What is a subarachnoid hemorrhage?
This brain imaging sequence shows fluid as bright white, highlighting ventricles and edema.
What is T2-weighted imaging?
Enlarged ventricles and transependymal flow are signs of this condition.
What is hydrocephalus?
This type of imaging of the brain is the first-line modality for evaluating trauma patients.
What is non-contrast CT?
This is the articulation joint between C1 and C2.
What is the atlantoaxial joint?
This imaging sign, seen in acute stroke, indicates a clot in the middle cerebral artery.
What is the hyperdense MCA sign?
This type of hemorrhage may cross suture lines, but does not cross dural folds/reflections
Subdural hematoma
(Key distinguishing factor from epidural hematomas, lemons vs. bananas not hard and fast)
This type of hydrocephalus occurs when CSF absorption is impaired due to prior infection, hemorrhage, or inflammation.
What is communicating hydrocephalus?
A noncontrast CT head is essential during a stroke code to exclude what pathology to determine treatment?
What is a hemorrhage?
This is an associated severe complication of nasal septum fracture.
What is a nasal septal hematoma?
This type of ischemic stroke is commonly associated with atrial fibrillation and may involve multiple vascular territories.
What is a cardioembolic stroke?
When evaluating subarachnoid hemorrhage, this imaging test helps identify aneurysms but is not used for initial diagnosis.
What is CTA?
The most common cause of congenital non-communicating hydrocephalus.
What is aqueductal stenosis?
Bonus for 100 points: Leads to obstruction of which ventricle/s?
This CT contrast reaction can be severe but is rare, requiring immediate epinephrine administration.
What is anaphylaxis?
The petrous portion of this bone is one of the densest in the body.
What is the temporal bone?
Bonus: Which area of brain is least well evaluated by CT?
This type of stroke shows a loss of sulci and hypodensity in a vascular territory on CT.
What is an acute ischemic stroke?
This type of edema, often seen in tumors and inflammatory conditions, results from the breakdown of the blood-brain barrier, leading to extracellular fluid accumulation.
What is vasogenic edema?
This imaging finding, often seen in cases of hydrocephalus, appears as an enlargement of the optic nerve sheath and flattening of the posterior globe.
What is papilledema?
MRI gadolinium-based contrast has been associated with this kidney complication, only seen in patients with GFR < 30.
What is nephrogenic systemic fibrosis?
A fracture of this bone is associated with epidural hematoma and rupture of middle meningeal artery?
What is the temporal bone?
A bright signal on diffusion-weighted imaging (DWI) (and dark signal on ADC) in the brain represents this condition.
What is acute infarction?
In cerebellar herniation, the cerebellar tonsils protrude downwards through this structure, which may cause respiratory failure.
What is the foramen magnum?
Double Jeopardy:
This fluid-sensitive MRI sequence suppresses bulk fluid but highlights edema, excellent for assessing vasogenic edema
What is FLAIR?
Triple Play:
For triple the points, name 3 instances in which CT should be ordered with contrast.
Three separate teammates must answer
What are?
CT Neck
CT for tumor, mets
CT for infection
Vascular (CTA)