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Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_5775_Библиотеки_им_академика_М_И_Перельмана

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C.Arteriovenousfistula D.Renalveinthrombosis
10.  The technologist could not identify flow in the portal vein of a liver transplant patient. What
adjustmentsshouldbemadetothewallfilterandpulserepetitionfrequency(PRF)?
A.DecreasewallfilteranddecreasePRF B.DecreasewallfilterandincreasePRF C.IncreasewallfilteranddecreasePRF D.IncreasewallfilterandincreasePRF
11.SpectralDoppleraliasingcanbereducedby:
A.Decreasingthescale B.Usingalower-frequencytransducer C.Samplingatagreaterdepth D.ChoosingaDoppleranglecloserto0degrees
12.Ultrasoundimagesfocusedontheportalvenoussystemareshowninapatientwithknowncirrhosis
andhepatocellularcarcinoma.Whatisthemostspecificsignoftheabnormalityshown?
A.Cavernoustransformation B.Echogenicclot C.Luminalexpansion D.Arterialflowwithintheclot
13.A28-year-oldmalewithrightscrotalpainisreferredforanultrasoundexaminationtoevaluatefor
testiculartorsion.Nocolorflowisdetectedwithineithertestis.Inordertoensurethatthefindingisnot artifactual,howshouldcolorprioritythresholdbeadjusted?
A.Colorprioritythresholdshouldbeincreased. B.Colorprioritythresholdshouldbedecreased. C.ColorprioritythresholddoesnotaffectDopplersensitivity.
14.WhichofthefollowingwillincreasetheDopplersensitivity?
A.Increasewallfilter. B.Increaseensemblelength. C.Increasepulserepetitionfrequency. D.IncreaseDopplerbeamsteering.
15.  In the following hepatic venous waveform, during which phase of the cardiac cycle does the
annotatedportionofthehepaticvenouswaveformoccur?
A.Earlydiastole B.Latediastole C.Earlysystole D.Latesystole
16.Whatisthemostlikelyetiologyofthehigh-velocityspikesinthefollowingDopplerspectraltracing
oftheportalvein?
A.Stenosis B.Clot C.Gas D.Septicemboli
17.Whatisthemostlikelyetiologyforthefollowingspectralwaveformobtainedfromthispatient’sleft
hepaticvein?
A.Mitralregurgitation B.Right-sidedheartfailure C.Tricuspidregurgitation D.Hepaticveincompression
18.Dopplerinterrogationofthedistal rightinternalcarotidartery(ICA) wasperformed. Whichofthe
followingmostlikelyresultedinthiswaveform?
A.IpsilateralICAstenosis B.ContralateralICAstenosis C.IpsilateralECAstenosis D.ContralateralECAstenosis
19.Whichofthefollowingistrueofcompoundimaging?
A.Increasestemporalresolution B.Increasessignal-to-noiseratio C.Increasesthefieldofview D.Improvesvisualizationofdeepstructures
20a.Whatisthebestdescriptionoftheabdominalaorta?Sagittal(top)andtransverse(bottom)images
areshown.
A.Saccularaneurysm B.Fusiformaneurysm C.Pseudoaneurysm D.Rupturedaneurysm
20b.Whatistheannualriskofruptureforanabdominalaorticaneurysm>5cm?
A.0% B.2% C.5% D.10% E.20%
20c. Whenpresent, whichofthe followingisassociated witha 40% coincidenceofabdominalaortic
aneurysm?
A.Thoracicaorticaneurysm B.Renalarteryaneurysm C.Splenicarteryaneurysm
D.Poplitealarteryaneurysm
21a. Aright upper quadrant ultrasoundisperformed toevaluate thispatientforabdominaldistension.
BasedonthesecolorflowDopplerimagesoftheliver,selectthebestdiagnosis.
A.Hepaticarterythrombosis B.Intrahepaticportosystemicshunt C.Cavernoustransformationoftheportalvein D.Arteriovenousmalformation
21b.Whatwouldbetheultrasoundappearanceofthemainportalvein(MPV)inthispatient?
A.MPVwillnotbeseen. B.MPVwillbenarrowedincaliber. C.MPVwillbeofnormalcaliber. D.MPVwillbeabnormallydilated.
22.Theaxialresolutionofgray-scaleimagingisgenerallybetterthanthatofpulsedDoppler.Why?
A.ShorterpulselengthsareusedinpulsedDoppler. B.LongerpulselengthsareusedinpulsedDoppler. C.Axialresolutionisindependentofpulselength. D.Axialresolutionisequaltopulselength×2.
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