ARRT Registry Practice Test #1Questions and Answers Updated 2026

ARRT Registry Practice Test
#1Questions and Answers
Updated 2026
AllBofBtheBfollowingBEXCEPTB___BwillBresultBinBanBincreaseBinBAECBresponseBtime.B

a.BdecreasingBtheBkVp

b.BIncreasingBtheBfocalBspotBsize

c.BincreasingBtheBpartBthickness

d.BincreasingBtheBSIDB-BAnswerb.BincreasingBtheBfocalBspotBsize



IncreasingBtheBfocalBspotBsizeBdoesBnotBchangeBtheBAECBresponseBtimeBItBaffectsBtheB
spatialBresolution.BDecreasingBtheBkVpBincreasesBtheBexposureBtimeBbecauseBmoreBph
otonsBareBabsorbed,BresultingBinBfewerBreachingBtheBcell(s).BTheBsameBisBtrueBforBincr
easingBpartBthickness.BIncreasingBtheBSIDBresultsBinBaBlongerBexposureBtimeBbecauseBo
fBbeamBdivergenceBandBtheBdecreaseBinBtheBnumberBofBphotonsBreachingBtheBcell(s).



OfBtheBfollowing,BtheBgreatestBattenuatorBofBx-raysBis:

a.Bair

b.Bbone

c.Bmuscle

d.BfatB-BAnswerb.Bbone



AirBallowsBforBtheBgreatestBtransmissionBofBx-
rays.BTheBprobabilityBofBboneBandBsoftBtissueB(muscle,Bfat)BattenuatingBx-
raysBviaBComptonBinteractionsBisBroughlyBtheBsame.BHowever,BsinceBboneBhasBaBhighe
rBeffectiveBatomicBnumberBthanBsoftBtissue,BboneBattenuatesBmoreBx-
raysBviaBphotoelectricBinteractions.



TheB______Bsinus(es)Bsit(s)BdirectlyBbeneathBtheBsellaBturcica.

a.Bethmoidal

b.Bfrontal

,c.Bmaxillary

d.BsphenoidalB-BAnswerd.Bsphenoidal



TheBsphenoidalBsinusesBareBusuallyBpairedB(2)BandBareBinBtheBbodyBofBtheBsphenoidB
bone.BTheBsinusesBlieBbelowBtheBsellaBturcicaBandBextendBbetweenBtheBposteriorBeth
moidalBairBcellsBandBtheBdorsalBsellae.



TheB_____BveinBisBBESTBsuitedBforBvenipuncture.

a.Bbasilic

b.Bpopliteal

c.Bfemoral

d.BrightBinternalBjugularB-BAnswera.Bbasilic



TheBbasilicaBandBcephalicBveinsBareBtheB2BmostBcommonBsitesBofBvenipuncture.BTheBp
oplitealBandBfemoralBveinsBareBinBtheBlowerBextremities,BwhichBareBharderBtoBaccessB
andBshouldBonlyBbeBusedBinBcasesBofBemergency.BTheBrightBinternalBjugularBveinBisBm
oreBcommonlyBusedBforBcentralBvenousBaccessBandBisBnotBaBcommonBsiteBforBvenipun
cture.



PrimaryBradiationBbarriersBmustBbeBATBLEASTB____BfeetBhigh.

a.B5

b.B6

c.B7

d.B8B-BAnswerc.B7



PrimaryBprotectiveBbarriersBareBrequiredBtoBbeB7BfeetBhighBfromBtheBdoor.



TheB____BsphincterBpreventsBrefluxBofBstomachBcontentsBintoBtheBesophagus.

a.Bpyloric

b.Bcardiac

,c.Bileocecal

d.BduodenalB-BAnswerb.Bcardiac



TheBcardiacBsphincterBisBlocatedBatBtheBesophagogastricBjunction.BWhenBworkingBprop
erly,BitBpreventsBbackBflowBofBstomachBcontentsBintoBtheBesophagus.



TheBAECBcontrolsBwhichBofBtheBfollowingBexposureBvariables?

a.BkVp

b.BfocalBspotBsizeB-BAnswerc.Bseconds



TheBAECBdeviceBisBdesignedBtoBcontrolBtheBtimeBofBexposure.BTheBremainingBtechnical
BfactorsBareBchosenBbyBtheBradiographer.



TheB______BreceivesBelectronsBimmediatelyBafterBtheyBareBreadBoutBfromBanBimagingB
detector.

a.Btransformer

b.BheliumBneonBlaser

c.BliquidBcrystalBdisplay

d.Banalog-to-digitalBconverterB-BAnswerd.Banalog-to-digitalBconverter



ElectronsBareBanalogBdata.BOnceBtheyBleaveBtheBdetector,BtheyBareBsentBtoBtheBanalog
-to-
digitalBconverterBforBsamplingBandBquantization.BHence,BtheBimageBisBconvertedBintoBa
BdigitalBimage.



AnBimageBthatBhasBmanyBshadesBofBgrayBwithBfewBdifferencesBamongBthemBisBdefine
dBasBexhibiting:

a.BhighBspatialBresolution

b.BlowBcontrast

c.BhighBdynamicBrange

, d.BlowBbitBdepthB-BAnswerb.BlowBcontrast



Low-
contrastBimagesBconsistBofBmanyBgrayBshadesBwithBveryBlittleBdifferencesBamongBtheBs
hades.BTheseBimagesBareBalsoBreferredBtoBasBexhibitingBlong-
scaleBcontrast.BSpatialBresolutionBdealsBwithBimageBsharpnessBandBdynamicBrangeBisBth
eBimagingBdetector'sBrangeBofBresponseBtoBexposures.BBitBdepthBhasBtoBdoBwithBtheB
numberBofBgrayBshadesBthatBaBsystemBcanByield.BABlowBbitBdepthBsystemBwouldBactu
allyBresultBinBanBimageBthatBdisplaysBfewBshadesBofBgray.BInBotherBwords,BtheBimageB
wouldBappearBmoreBblackBandBwhite.



WhichBofBtheBfollowingBstructuresBisBlocatedBinBtheBmediastinum?

a.BrightBmiddleBlobeBandBesophagus

b.BleftBupperBlobeBandBheart

c.BaortaBandBthyroid

d.BtracheaBandBthymusB-BAnswerd.BtracheaBandBthymus



StructuresBlocatedBinBtheBmediastinumBareBtheBheart,BgreatBvessels,Btrachea,Besophag
us,Bthymus,Blymphatics,Bnerves,BfibrousBtissue,BandBfat.



ABterminallyBillBpatientBhasBaskedBtheBdoctorBaboutBpossibleBvolunteerBopportunitiesBi
nBtheBhospital.BSheBsaysBthatBifBsheBcanBvolunteerBinBtheBhospital,BsheBmightBbeBable
BtoBextendBherBlifeBaBbitBlongerBfromBdoingBgoodBdeeds.BThisBrepresentsBtheB____Bst
ageBofBgriefBforBtheBpatient.B

a.Bbargaining

b.Banger

c.Bdenial

d.BdepressionB-BAnswera.Bbargaining



TheBbargainingBstageBfocusesBonBtheBhopeBtheBpatientBhasBtoBextendBherBlife.BAngerB
canBoccurBonceBtheBpatientBrealizesBherBlifeBisBbeingBinterruptedBbyBtheBillness.BDenia
lBcanBincludeBrejectingBinformationBandBpreferringBtoBbeBleftBalone.BDepressionBaffects