LIMITED SCOPE OF RADIOGRAPHY PRACTICE EXAM QUESTIONS AND CORRECT VERIFIED ANSWERS

LIMITED SCOPE OF RADIOGRAPHY
PRACTICE EXAM QUESTIONS AND
CORRECT VERIFIED ANSWERS
whatA2statementsA2areA2correctA2regardingA2theA2linkA2betweenA2radiationA2andA2geneticA2
effectsA2-A2Ans--TheA2linkA2hasA2beenA2demonstratedA2inA2animalA2studiesA2.
IncreasedA2riskA2toA2humansA2cannotA2beA2predictedA2withA2respectA2toA2anA2individual.

TheA2changesA2inA2kilovoltageA2(kVp)A2willA2resultA2inA2theA2greatestA2reductionA2ofA2patie
ntA2dose,A2whenA2milliampere-
secondsA2(mAs)A2isA2adjustedA2toA2compensateA2forA2theA2changeA2-A2Ans--
IncreaseA2kVpA2byA230%

TheA2followingA2imageA2receptorA2(IR)A2systemA2speedsA2willA2resultA2inA2theA2lowestA2pat
ientA2doseA2-A2Ans--FasterA2speedA2IRA2system

TheA2primaryA2purposeA2ofA2usingA2gonadA2shieldsA2-A2Ans--
reduceA2theA2likelihoodA2ofA2geneticA2effects

AreA2gonadA2shieldsA2-A2Ans--ContactA2andA2shadow

gonadA2shieldingA2shouldA2beA2usedA2-A2Ans--
whenA2theA2gonadsA2areA2withinA25A2cmA2ofA2theA2radiationA2field

theA2greatestA2causeA2ofA2unnecessaryA2radiationA2toA2patientsA2thatA2canA2beA2controlled
A2byA2theA2limitedA2operatorA2isA2-A2Ans--repeatA2exposures


theA2limitedA2operatorA2canA2reduceA2repeatA2exposureA2-A2Ans--
clearlyA2instructingA2patients

howA2doesA2theA2x-rayA2beamA2restrictionA2minimizeA2patientA2exposureA2-A2Ans--
itA2limitsA2theA2radiationA2fieldA2toA2theA2areaA2ofA2interest

whatA2isA2theA2deviceA2thatA2allowsA2theA2limitedA2operatorA2toA2varyA2theA2sizeA2ofA2theA2r
adiationA2fieldA2-A2Ans--collimator

howA2doesA2filtrationA2reduceA2patientA2exposureA2-A2Ans--removesA2longer-
wavelengthA2photons

TheA2NationalA2CouncilA2onA2RadiationA2ProtectionA2andA2Measurements(NCRP)A2recom
mendationA2forA2theA2amountA2ofA2totalA2filtrationA2-A2Ans--2.5A2mmA2AlA2equiv

,ThreeA2principalA2methodsA2usedA2toA2protectA2limitedA2operatorsA2fromA2unnecessaryA2r
adiationA2exposureA2-A2Ans--time,A2distance,A2andA2shielding

TheA2followingA2isA2notA2aA2typeA2ofA2personalA2radiationA2shieldingA2-A2Ans--Shadow

personnelA2shieldingA2mustA2beA2wornA2onA2theA2rareA2occasionA2duringA2whichA2theA2limi
tedA2operatorA2mayA2needA2toA2remainA2inA2theA2radiographicA2roomA2duringA2anA2exposu
reA2toA2assistA2theA2patientA2inA2maintainingA2theA2properA2position.A2WhatA2isA2theA2sourc
eA2ofA2theA2greatestA2radiationA2hazardA2underA2thisA2circumstance.?A2-A2Ans--
scatteredA2radiationA2fromA2theA2patient

theA2termA2forA2radiationA2theA2escapesA2fromA2theA2x-rayA2tubeA2housingA2-A2Ans--
leakageA2radiation

whyA2areA2limitedA2operatorsA2prohibitedA2fromA2activitiesA2thatA2resultA2inA2directA2exposu
reA2toA2theA2primaryA2x-rayA2beamA2-A2Ans--
theyA2areA2consideredA2occupationallyA2exposedA2individuals

distance,A2asA2aA2methodA2usedA2toA2limitA2operatorA2exposure,A2meansA2thatA2-A2Ans--
theA2operatorA2shouldA2maximizeA2theA2distanceA2fromA2theA2sourceA2duringA2anA2exposu
re

shieldingA2wornA2forA2personnelA2protectionA2isA2designedA2toA2attenuateA2whatA2sourceA2
ofA2exposureA2-A2Ans--scatterA2radiation

theA2acronymA2forA2aA2commonA2typeA2ofA2personnelA2dosimeterA2-A2Ans--TLD

WhatA2isA2theA2recommendedA2placementA2forA2personnelA2dosimeterA2onA2theA2bodyA2of
A2theA2limitedA2operatorA2-A2Ans--
theA2badgeA2shouldA2beA2wornA2inA2theA2regionA2ofA2theA2collarA2onA2theA2anteriorA2surfac
eA2ofA2theA2bodyA2andA2outsideA2theA2leadA2apron,A2ifA2worn

TheA2NCRPA2recommendedA2annualA2effectiveA2doseA2limitA2forA2occupationalA2exposure
A2-A2Ans--5.0A2remA2(0.05A2Sv)


TheA2NCRPA2recommendedA2monthlyA2effectiveA2(orA2equivalent)A2doseA2limitA2toA2theA2f
etusA2forA2aA2pregnantA2workerA2-A2Ans--0.05A2remA2(0.0005A2Sv)

RadiationA2monitoringA2ofA2personnelA2isA2requiredA2whenA2whatA2percentageA2ofA2theA2a
nnualA2occupationalA2effectiveA2doseA2limitA2isA2likelyA2toA2beA2receivedA2-A2Ans--10%

TheA2conventionalA2(BritishA2system)A2radiationA2unitA2toA2expressA2radiationA2intensityA2i
nA2theA2airA2-A2Ans--Roentgen

TheA2conventionalA2(BritishA2system)A2unitA2commonlyA2usedA2toA2reportA2occupationalA2
doseA2toA2radiationA2workersA2inA2theA2UnitedA2StatesA2isA2theA2-A2Ans--rem

, WhatA2isA2theA2conventionalA2(BritishA2system)A2radiationA2unitA2ofA2absorbedA2doseA2-
A2Ans--Rad


AccordingA2toA2theA2Bergonie-
TribondeauA2law,A2theA2followingA2typesA2ofA2cellsA2areA2mostA2radiosensitiveA2-A2Ans--
embryonicA2tissueA2cells

TypeA2ofA2x-
rayA2photonA2interactionA2withA2theA2bodyA2isA2primarilyA2responsibleA2forA2theA2radiationA2
doseA2absorbedA2byA2theA2patientA2-A2Ans--Photoelectric

TheA2NCRPA2(reportA2#102)A2recommendationA2forA2leadA2equivalencyA2ofA2apronsA2use
dA2forA2personnelA2protectionA2-A2Ans--0.5A2mm

ErythemaA2asA2itA2relatesA2toA2radiationA2exposureA2-A2Ans--
reddeningA2ofA2theA2skinA2causedA2byA2aA2highA2radiationA2dose

TheA2guidingA2philosophyA2ofA2radiationA2protectionA2-A2Ans--ALARA--
asA2lowA2asA2reasonablyA2achievable

TheA2followingA2statementsA2reflectsA2currentA2scientificA2opinionA2regardingA2theA2effects
A2ofA2diagnosticA2levelsA2ofA2ionizingA2radiationA2-A2Ans--
ThereA2isA2anA2increasedA2riskA2ofA2cancer,A2leukemia,A2birthA2defects,A2andA2cataracts

TheA2followingA2changesA2willA2decreaseA2patientA2doseA2-A2Ans--usingA2aA2faster-
speedA2classA2imagingA2systemA2
increasingA2theA2gridA2ratioA2toA2aA216:1A2ratio

WhenA2radiationA2exposureA2occursA2duringA2pregnancy,A2theA2greatestA2riskA2ofA2birthA2d
efectsA2occursA2whenA2theA2exposureA2-A2Ans--exceedsA25A2radA2toA2theA2uterusA2
occursA2withinA2theA2firstA2trimesterA2ofA2pregnancy

AtA2whatA2kVpA2levelsA2doA2ComptonA2interactionsA2occurA2-A2Ans--
theyA2occurA2throughoutA2theA2diagnosticA2radiologyA2kVpA2range

TheA2principalA2sourceA2ofA2scatterA2radiationA2inA2radiographyA2-A2Ans--TheA2IR

TheA2fourA2essentialsA2elementsA2requiredA2forA2x-rayA2productionA2-A2Ans--
AA2target,A2aA2vacuum,A2anA2electronA2source,A2andA2aA2highA2potentialA2difference

TheA2greatestA2portionA2ofA2theA2x-rayA2beamA2isA2madeA2upA2ofA2-A2Ans--
BremsstrahlungA2radiation

TheA2penetratingA2powerA2ofA2theA2x-rayA2beamA2isA2controlledA2byA2varyingA2theA2-
A2Ans--kilovoltageA2(kVp)