ARRT Registry Practice Test #1 Questions with 100% Correct Answers

ARRT Registry Practice Test #1
Questions with 100% Correct
Answers
AllAofAtheAfollowingAEXCEPTA___AwillAresultAinAanAincreaseAinAAECAresponseAtime.A
a.AdecreasingAtheAkVp
b.AIncreasingAtheAfocalAspotAsize
c.AincreasingAtheApartAthickness

d.AincreasingAtheASIDA-AAnswer✓Ab.AincreasingAtheAfocalAspotAsize



IncreasingAtheAfocalAspotAsizeAdoesAnotAchangeAtheAAECAresponseAtimeAItAaffectsAtheAspati
alAresolution.ADecreasingAtheAkVpAincreasesAtheAexposureAtimeAbecauseAmoreAphotonsAareA
absorbed,AresultingAinAfewerAreachingAtheAcell(s).ATheAsameAisAtrueAforAincreasingApartAthic
kness.AIncreasingAtheASIDAresultsAinAaAlongerAexposureAtimeAbecauseAofAbeamAdivergenceA
andAtheAdecreaseAinAtheAnumberAofAphotonsAreachingAtheAcell(s).


OfAtheAfollowing,AtheAgreatestAattenuatorAofAx-raysAis:
a.Aair
b.Abone
c.Amuscle

d.AfatA-AAnswer✓Ab.Abone



AirAallowsAforAtheAgreatestAtransmissionAofAx-
rays.ATheAprobabilityAofAboneAandAsoftAtissueA(muscle,Afat)AattenuatingAx-
raysAviaAComptonAinteractionsAisAroughlyAtheAsame.AHowever,AsinceAboneAhasAaAhigherAeff
ectiveAatomicAnumberAthanAsoftAtissue,AboneAattenuatesAmoreAx-
raysAviaAphotoelectricAinteractions.


TheA______Asinus(es)Asit(s)AdirectlyAbeneathAtheAsellaAturcica.
a.Aethmoidal
b.Afrontal
c.Amaxillary

d.AsphenoidalA-AAnswer✓Ad.Asphenoidal

,TheAsphenoidalAsinusesAareAusuallyApairedA(2)AandAareAinAtheAbodyAofAtheAsphenoidAbone.
ATheAsinusesAlieAbelowAtheAsellaAturcicaAandAextendAbetweenAtheAposteriorAethmoidalAairAc
ellsAandAtheAdorsalAsellae.


TheA_____AveinAisABESTAsuitedAforAvenipuncture.
a.Abasilic
b.Apopliteal
c.Afemoral

d.ArightAinternalAjugularA-AAnswer✓Aa.Abasilic



TheAbasilicaAandAcephalicAveinsAareAtheA2AmostAcommonAsitesAofAvenipuncture.ATheApoplite
alAandAfemoralAveinsAareAinAtheAlowerAextremities,AwhichAareAharderAtoAaccessAandAshoul
dAonlyAbeAusedAinAcasesAofAemergency.ATheArightAinternalAjugularAveinAisAmoreAcommonly
AusedAforAcentralAvenousAaccessAandAisAnotAaAcommonAsiteAforAvenipuncture.


PrimaryAradiationAbarriersAmustAbeAATALEASTA____AfeetAhigh.
a.A5
b.A6
c.A7

d.A8A-AAnswer✓Ac.A7



PrimaryAprotectiveAbarriersAareArequiredAtoAbeA7AfeetAhighAfromAtheAdoor.


TheA____AsphincterApreventsArefluxAofAstomachAcontentsAintoAtheAesophagus.
a.Apyloric
b.Acardiac
c.Aileocecal

d.AduodenalA-AAnswer✓Ab.Acardiac



TheAcardiacAsphincterAisAlocatedAatAtheAesophagogastricAjunction.AWhenAworkingAproperly,Ai
tApreventsAbackAflowAofAstomachAcontentsAintoAtheAesophagus.


TheAAECAcontrolsAwhichAofAtheAfollowingAexposureAvariables?

, a.AkVp

b.AfocalAspotAsizeA-AAnswer✓Ac.Aseconds



TheAAECAdeviceAisAdesignedAtoAcontrolAtheAtimeAofAexposure.ATheAremainingAtechnicalAfacto
rsAareAchosenAbyAtheAradiographer.


TheA______AreceivesAelectronsAimmediatelyAafterAtheyAareAreadAoutAfromAanAimagingAdete
ctor.
a.Atransformer
b.AheliumAneonAlaser
c.AliquidAcrystalAdisplay

d.Aanalog-to-digitalAconverterA-AAnswer✓Ad.Aanalog-to-digitalAconverter



ElectronsAareAanalogAdata.AOnceAtheyAleaveAtheAdetector,AtheyAareAsentAtoAtheAanalog-to-
digitalAconverterAforAsamplingAandAquantization.AHence,AtheAimageAisAconvertedAintoAaAdigi
talAimage.


AnAimageAthatAhasAmanyAshadesAofAgrayAwithAfewAdifferencesAamongAthemAisAdefinedAas
Aexhibiting:
a.AhighAspatialAresolution
b.AlowAcontrast
c.AhighAdynamicArange

d.AlowAbitAdepthA-AAnswer✓Ab.AlowAcontrast



Low-
contrastAimagesAconsistAofAmanyAgrayAshadesAwithAveryAlittleAdifferencesAamongAtheAshade
s.ATheseAimagesAareAalsoAreferredAtoAasAexhibitingAlong-
scaleAcontrast.ASpatialAresolutionAdealsAwithAimageAsharpnessAandAdynamicArangeAisAtheAi
magingAdetector'sArangeAofAresponseAtoAexposures.ABitAdepthAhasAtoAdoAwithAtheAnumberA
ofAgrayAshadesAthatAaAsystemAcanAyield.AAAlowAbitAdepthAsystemAwouldAactuallyAresultAin
AanAimageAthatAdisplaysAfewAshadesAofAgray.AInAotherAwords,AtheAimageAwouldAappearAm
oreAblackAandAwhite.


WhichAofAtheAfollowingAstructuresAisAlocatedAinAtheAmediastinum?
a.ArightAmiddleAlobeAandAesophagus