m
,Chapterm01:mRadiationmHistory
Iannucci:mDentalmRadiography,m6thmEdition
MULTIPLEmCHOICE
1. Radiationmismdefinedmas
a. amformmofmenergymcarriedmbymwavesmorms
treamsmofmparticles.
b. ambeammofmenergymthatmhasmthempowermt
ompenetratemsubstancesmandmrecordmimag
e
shadowsmonmamreceptor.
c. amhigh-
energymradiationmproducedmbymthemcollisi
onmofmambeammofmelectronsmwithmammetal
mtargetminman mx-raymtube.
d. ambranchmofmmedicinemthatmdealsmwithmthe
usemofmx-rays.
ANS:m A
Radiationmismamformmofmenergymcarriedmbymwavesmormstreamsmofmparticles.mAnmx-
raymismambeammofmenergymthatmhasmthempowermtompenetratemsubstancesmandmrecordmima
gemshadowsmonmamreceptor.mX-radiationmismamhigh-
energymradiationmproducedmbymthemcollisionmofmambeammofmelectronsmwithmammetalm tar
getm inmanmx-
raymtube.m Radiologymismam branchm ofmmedicinemthatmdealsmwithmthemusemofmx-rays.
DIF: Recall REF:m m Pagem2 OBJ:m 1
TOP:mCDA,mRHS,mIII.B.2.mDescribemthemcharacteristicsmofmx-radiation
MSC:mNBDHE,m2.0mObtainingmandmInterpretingmRadiographsm|mNBDHE,m2.1mPrinciplesmofmra
diophysicsmandmradiobiology
2. Amradiographmismdefinedmas
a. ambeammofmenergymthatmhasmthempow
ermtompenetratemsubstancesmandmrecor
dmimagemshadowsmonmamreceptor.
b. ampicturemonmfilmmproducedmbymthempass
agemofmx-
raysmthroughmanmobjectmormbody.
c. themartmandmsciencemofmmakingmradiogra
phsmbymthemexposuremofmanmimagemrecep
tormtomx-mrays.
d. amformmofmenergymcarriedmbymwavesmorma
mstreammofmparticles.
ANS:m B
Anmx-
raymismambeammofmenergymthatmhasmthempowermtompenetratemsubstancesmandmrecordmima
gemshadowsmonmamreceptor.mAmradiographmismampicturemonmfilmmproducedmbymthempassa
gemofmx-
mraysmthroughman mobjectmormbody.mRadiographymismthemartmandmsciencemofmmakingmden
talmimagesmbymthemexposuremofmamreceptormtomx-
rays.mRadiationmismamformmofmenergymcarriedmbymwavesmormstreamsmofmparticles.
,DIF: Comprehension REF:m Pagem2
OBJ:m1mTOP:mCDA,mRHS,mIII.B.2.mDescribemthemcharacteristicsm
ofmx-radiation
MSC:mNBDHE,m2.0mObtainingmandmInterpretingmRadiographsm|mNBDHE,m2.1mPrinciplesmofmra
diophysicsmandmradiobiology
3. Yourmpatientmaskedmyoumwhymdentalmimagesmaremimportant.mWhichm
ofmthemfollowingmismthemcorrectmresponse?
a. Anmoralmexaminationmwithmdentalmimages
mlimitsmthempractitioner mtomwhatmismseenm
clinically.
b. Allmdentalmdiseasesmandmconditionsmprod
ucemclinicalmsignsmandmsymptoms.
c. Dentalmimagesmaremnotmamnecessarymcom
ponentmofmcomprehensivempatientmcare.
d. Manymdentalmdiseasesmaremtypicallymdisc
overedmonlymthroughmthemusemofmdentalmi
mages.
ANS:m D
Anmoralmexaminationmwithoutmdentalmimagesmlimitsmthempractitionermtomwhatmismseenmc
linically.mManymdentalmdiseasesmandmconditionsmproducemnomclinicalmsignsmandmsympto
ms.mDentalmimagesmaremamnecessarymcomponentmofmcomprehensivempatientmcare.mMany
mdentalmdiseasesmaremtypicallymdiscoveredmonlymthroughmthemusemofmdentalmimages.
DIF: Application REF:m m Pagem2 OBJ:m 2
TOP:mCDA,mRHS,mIII.B.2.mDescribemthemcharacteristicsmofmx-radiation
MSC:mNBDHE,m2.0mObtainingmandmInterpretingmRadiographsm|mNBDHE,m2.5mGeneral
4. Themx-raymwasmdiscoveredmby
a. HeinrichmGeissler
b. WilhelmmRoentgen
c. JohannmHittorf
d. WilliammCrookes
ANS:m B
HeinrichmGeisslermbuiltmthemfirstmvacuummtubeminm1838.mWilhelmmRoentgenmdiscover
edmthemx-
raymonmNovemberm8,m1895.mJohannmHittorfmobservedminm1870mthatmdischargesmemitte
dmfrommthemnegativemelectrodemofmamvacuummtubemtraveledminmstraightmlines,mproduc
edmheat,
andmresultedminmamgreenishmfluorescence.mWilliammCrookesmdiscoveredminmthemlatem187
0smthatmcathodemraysmweremstreamsmofmchargedmparticles.
DIF: Recall REF:m m Pagem2 OBJ:m 4
TOP:mCDA,mRHS,mIII.B.2.mDescribemthemcharacteristicsmofmx-radiation
MSC:mNBDHE,m2.0mObtainingmandmInterpretingmRadiographsm|mNBDHE,m2.5mGeneral
, 5. WhomexposedmthemfirstmdentalmradiographminmthemUnitedmStatesmusingmamlivemperson?
a. OttomWalkoff
b. WilhelmmRoentgen
c. EdmundmKells
d. WestonmPrice
ANS:m C
OttomWalkoffmwasmamGermanmdentistmwhommademthemfirstmdentalmradiograph.mWilhelm
mRoentgenmwasmamBavarianmphysicist mwhomdiscoveredmthemx-
ray.mEdmundmKellsmexposedmthemfirstmdentalmradiographminmthemUnitedmStatesmusingma
mlivemperson.mPrice mintroducedmthembisectingmtechniqueminm1904.
DIF: Recall REF:m m Pagem4 OBJ:m 5
TOP:mCDA,mRHS,mIII.B.2.mDescribemthemcharacteristicsmofmx-radiation
MSC:mNBDHE,m2.0mObtainingmandmInterpretingmRadiographsm|mNBDHE,m2.5mGeneral
6. Currentmfastmradiographicmfilmmrequires
%mlessmexposuremtimemthanmtheminitialmexposuremtimesmusedminm1920.
a. 33
b. 98
c. 73
d. 2
ANS:m D
Currentmfastmradiographicmfilmmrequiresm98%mlessmexposuremtimemthanmtheminitialmexpo
suremtimesmusedminm1920.
DIF: Comprehension REF:m Pagem5
OBJ:m6mTOP:mCDA,mRHS,mIII.B.2.mDescribemthemcharacteristicsm
ofmx-radiation
MSC:mNBDHE,m2.0mObtainingmandmInterpretingmRadiographsm|mNBDHE,m2.5mGeneral
7. Whommodifiedmthemparallelingmtechniquemwithmthemintroductionmofmthem
long-mconemtechnique?
a. C.mEdmundmKells
b. FranklinmW.mMcCormack
c. F.mGordonmFitzgerald
d. HowardmRileymRaper
ANS:m C
C.mEdmundmKellsmintroducedmthemparallelingmtechniqueminm1896.mFranklinmW.mMcCor
mackmreintroducedmthemparallelingmtechniqueminm1920.mF.mGordonmFitzgeraldmmodified
mthemparallelingmtechniquemwithmthemintroductionmofmthemlong-
conemtechnique.mThismismthemtechniquemcurrentlymused.mHowardmRileymRapermmodified
mthembisectingmtechniquemandmintroducedmthembite-wingmtechniqueminm1925.
DIF: Recall REF:m m Pagem4 OBJ:m 7
TOP:mCDA,mRHS,mIII.B.2.mDescribemthemcharacteristicsmofmx-radiation
MSC:mNBDHE,m2.0mObtainingmandmInterpretingmRadiographsm|mNBDHE,m2.5mGeneral