Question 1764
The term cerebral "luxury perfusion" denotes...
Question 1765
The term cerebral "benign oligemia" is used to denote a region of brain with...
Question 1766
In the accompanying graphic, that depicts the changes in cerebral perfusion parameters with progressively decreasing perfusion pressure, which letter best identifies successful autoregulation?
Question 1767
In the accompanying graphic, that depicts the changes in cerebral perfusion parameters with progressively decreasing perfusion pressure, which letter best identifies benign oligemia?
Question 1768
In the accompanying graphic, that depicts the changes in cerebral perfusion parameters with progressively decreasing perfusion pressure, which letter best identifies the ischemic penumbra?
Question 1769
In the accompanying graphic, that depicts the changes in cerebral perfusion parameters with progressively decreasing perfusion pressure, which letter best identifies the infarct core?
Question 1776
The "fogging phenomenon" in CT of the brain obtained for stroke refers to...
Question 1777
In patients with ischemic infarcts, which of the following sequences is most sensitive for the presence of hemorrhagic transformation?
Question 1778
Which of the following factors is a predictor of a relatively better outcome in ischemic stroke?
Question 1779
What vascular territory is involved in this acute infarct?
Question 1780
Which of the following statements regarding the usual origin of cerebral vessels is NOT correct?
Question 1781
What vessel is indicated by the blue arrow?
Question 1782
A 35-year-old woman presents with a gradually worsening headache with nausea and vomiting. Upon arrival at the emergency department, she undergoes a non-contrast CT of the brain (shown below).
What is the most appropriate next imaging investigation?
Question 1783
This elderly man develops weakness 6-hours after carotid endarterectomy. A non-contrast CT is obtained (shown below).
What is the most likely diagnosis?
Question 1785
The anterior choroidal artery arises from the...
Question 1786
The recurrent artery of Heubner usually arises from the...
Question 1787
A 40-year-old man with end-stage renal failure suffers acute features consistent with a pontine infarct. A CT demonstrates the following features. What is the most likely underlying condition?
Question 1788
What vascular abnormality is demonstrated in the accompanying image (axial MRA, lateral DSA)?
Question 1789
In the setting of ischemic strokes, the return of DWI signal to normal after early reperfusion (i.e. within 3 to 6 hours of onset) is occasionally encountered and is known as...
Question 1790
ADC values returning to normal approximately 1 week after an ischemic infarct is known as...