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COMBO WITH CCI RVS REVIEW EXAM WITH
COMPLETE SOLUTION


Name the arteries of the Circle of Willis. - ANSWER 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. - ANSWER 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? - ANSWER An absent flow
recersal component, blunting of the peak velocity and prolonged upslope and
downslope.



Which of the following may not be a component of a normal arterial volume waveform?
Fast upstroke, sharp peak, rapid downslope bowed towards baseline, dicrotic notch or
reverse flow component? - ANSWER Reverse flow component because it is part of a
Doppler waveform not volume waveform.



What percent increase in mean velocity represents a normal PORH [postocclusive
reactive hyperemia] response? - ANSWER >100%.



Which of the following are falsely elevated less frequently than tibial ankle pressures? -
ANS Toe pressures.

,The volume flow rate in a reversed saphenous vein bypass graft should be? - ANS 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? - ANSWER Vasodilation opens to attempt to increase nutrive
blood flow to the extremity and distal resistance decreases.



If you have a damped Doppler velocity waveform of the subclavian artery, where would
the significant lesion be located? - ANSWER Proximal to the point of insonation.



What are the waveforms you would most likely see from CFA to the tibial arteries with an
occlusion of the superficial femoral artery? - ANSWER Triphasic CFA and proximal SFA
with monophasic at the popliteal and tibial arteries.



What is digital subtraction arteriography? -ANSWER 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? -ANSWER Aortoiliac, femoropopliteal and trifurcation arteries.



Which diagnostic parameter is the best indicator of renovascular hypertension? -
ANSWER renal/aortic ratio(RAR).Renal Artery Ratio:

Peak Systolic Velocity renal artery

------------------------------------------

Peak Systolic Velocity Aorta



Spontaneous splenorenal shunt is associated with what process? - ANSWER Portal
hypertension.

, Define Budd Chiari syndrome. - ANSWER Syndrome 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? - ANSWER Celiac artery,
SMA and IMA. They supply blood to the gut.

Postprandial weight loss and abdominal bruit, which vessel might be partly responsible?
- ANSWER 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? - ANSWER Portal hypertension.



T or F- Noninvasive diagnosis of renal artery stenosis can ve made by B-mode images of
atherosclerotic plaque. - ANSWER False, It requires a duplex system with spectral
analysis.



Proximal renal artery stenosis > than 60% is diagnosed when? - ANSWER Systolic
renal/aortic velocity ratio(RAR) is >3.5.



What will happen to the Doppler signal from the sublcavian vein during inspiration? -
ANSWER It will augment.



What will pulsatile venous Doppler from the portal vein suggest? - ANSWER Portal
hypertension.



T or F-In duplex assessment of the portral vein, flow is normally continuous with
respiration. - ANSWER False. It is normally phasic with respiration.



How is the sublcalvian vein best checked for coaptation? - ANSWER With a quick deep
breath (big sniff).



Doppler signal from the subclavian vein is expected to be? - ANSWER Pulsatile. (dont

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