Questions and Correct Answers, Latest
2024/2025. 100% Correct.
Name the arteries of the Circle of Willis.
Anterior cerebral artery (left and right)
Anterior communicating artery
Internal carotid artery (left and right)
Posterior cerebral artery (left and right)
Posterior communicating artery (left and right)
The basilar artery and middle cerebral arteries, supplying the brain, are also considered part of the
circle
Name the branches of the ICA proximal to distal.
Ophthalmic artery, Supraorbital, frontal and nasal arteries
What will a Doppler waveform abnormality in the lower extremity arterial circulation distal to a
hemodynamically significant stenosis show?
An absent flow recersal component, blunting of the peak velocity and prolonged upslope and
downslope.
A normal arterial volume waveform may have all EXCEPT: Swift upstroke, sharp peak, rapid
downslope bowed toward baseline, dicrotic notch or reverse flow component?
Reverse flow component because it is part of a Doppler waveform not volume waveform.
A normal PORH (postocclusive reactive hyperemia) response is a major velocity increase of what
percent increase in mean velocity?
>100%.
What are falsely elevated less frequently than tibial ankle pressures?
Toe pressures.
The volume flow rate in a reversed saphenous vein bypass graft should be?
The same throughout the graft even though the velocities may differ.
With both arterial obstructive disease and distal ischemia, what happens to vessel size and distal
resistance?
Vasodilation opens to attempt to increase nutrive blood flow to the extremity and distal resistance
decreases.
When you have a damped Doppler velocity waveform of the subclavian artery, where would the
significant lesion be located?
Proximal to the point of insonation.
, What waveforms will you likely see from CFA to tibial arteries with a superficial femoral artery
occlusion?
Triphasic CFA and proximal SFA with monophasic at the popliteal and tibial arteries.
What is digital subtraction arteriography?
a method in which radiographic images of blood vessels filled with contrast material are digitized
and then subtracted from images obtained before administration of the material. The method
increases the contrast between the vessels and the background.
The common radiologic terms "inflow", "outflow" and "runoff" refer respectively to what?
Aortoiliac, femoropopliteal and trifurcation arteries.
Which diagnostic parameter is the best indicator of renovascular hypertension?
renal/aortic ratio(RAR).Renal Artery Ratio:
Peak Systolic Velocity renal artery
------------------------------------------
Peak Systolic Velocity Aorta
Spontaneous splenorenal shunt is associated with what process?
Portal hypertension.
Define Budd Chiari syndrome.
Syndrome is caused by blood clots that completely or partially block the large veins that carry blood
from the liver (hepatic veins) into the inferior vena cava.
The splanchnic arteries are? and where do they supply blood?
Celiac artery, SMA and IMA. They supply blood to the gut.
When examining a patient with weight loss, postprandial pain, and an abdominal bruit, what vessel
is most likely to be partly responsible?
SMA though CA and IMA may be involved.(chronic mesenteric ischemia)
Patient presents with an enlarged coronary vein with retrograde flow, what is this a finding of?
Portal hypertension.
T or F- Noninvasive diagnosis of renal artery stenosis can ve made by B-mode images of
atherosclerotic plaque.
False, It requires a duplex system with spectral analysis.
Proximal renal artery stenosis > than 60% is diagnosed when?
Systolic renal/aortic velocity ratio(RAR) is >3.5.
What will happen to the Doppler signal from the sublcavian vein during inspiration?
It will augment.
What will pulsatile venous Doppler from the portal vein suggest?