Principles and Techniques 6th Edition
by Joen Iannucci & Laura Jansen Howerton
Chapters 1 - 35 | Complete
,Chapter 01: Radiation History
Iannucci: Dental Radiography, 6th Edition
MULTIPLE CHOICE
1. Radiation is defined as
a. a form of energy carried by waves or streams of particles.
b. a beam of energy that has the power to penetrate substances and record image
shadows on a receptor.
c. a high-energy radiation produced by the collision of a beam of electrons with a
metal target in an x-ray tube.
d. a branch of medicine that deals with the use of x-rays.
ANSWER: A
Radiation is a form of energy carried by waves or streams of particles. An x-ray is a beam of
energy that has the power to penetrate substances and record image shadows on a receptor.
X-radiation is a high-energy radiation produced by the collision of a beam of electrons with a
metal target in an x-ray tube. Radiology is a branch of medicine that deals with the use of
x-rays.
DIF: Recall REF: Page 2 OBJ: 1
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles of radiophysics
and radiobiology
2. A radiograph is defined as
a. a beam of energy that has the power to penetrate substances and record image
shadows on a receptor.
b. a picture on film produced by the passage of nx-rays nthrough nan nobject nor nbody.
c. the nart nand nscience nof nmaking nradiographs nby nthe nexposure nof nan nimage
nreceptor ntonx-rays.
d. a nform nof nenergy ncarried nby nwaves nor na nstream nof nparticles.
ANSWER: n B
An nx-ray nis na nbeam nof nenergy nthat nhas nthe npower nto npenetrate nsubstances nand nrecord
nimage nshadows non na nreceptor. n A nradiograph nis na npicture non nfilm nproduced nby nthe
npassage nof nx-rays nthrough nan nobject nor nbody. nRadiography nis nthe nart nand nscience nof
nmaking ndental nimages nby nthenexposure nof na nreceptor nto nx-rays. n Radiation nis na nform
nof nenergy ncarried nby nwaves nor nstreams nof nparticles.
DIF: Comprehension REF: n n nPage n2 OBJ:
n 1nTOP: n CDA, nRHS, nIII.B.2. nDescribe nthe ncharacteristics nof nx-
radiation
MSC: n NBDHE, n2.0 nObtaining nand nInterpreting nRadiographs n| nNBDHE, n2.1 nPrinciples nof
nradiophysicsnand nradiobiology
3. Your npatient nasked nyou nwhy ndental nimages nare nimportant. nWhich nof nthe
nfollowing nis nthencorrect nresponse?
a. An noral nexamination nwith ndental nimages nlimits nthe npractitioner nto nwhat
nis nseennclinically.
b. All ndental ndiseases nand nconditions nproduce nclinical nsigns nand nsymptoms.
, c. Dental nimages nare nnot na nnecessary ncomponent nof ncomprehensive npatient ncare.
d. Many ndental ndiseases nare ntypically ndiscovered nonly nthrough nthe nuse nof
ndentalnimages.
ANSWER: n D
An noral nexamination nwithout ndental nimages nlimits nthe npractitioner nto nwhat nis nseen
nclinically. nMany ndental ndiseases nand nconditions nproduce nno nclinical nsigns nand
nsymptoms. nDental nimagesnare na nnecessary ncomponent nof ncomprehensive npatient ncare.
nMany ndental ndiseases nare ntypically ndiscovered nonly nthrough nthe nuse nof ndental nimages.
DIF: Application REF: n n nPage n2 OBJ: n 2
TOP: n CDA, nRHS, nIII.B.2. nDescribe nthe ncharacteristics nof nx-radiation
MSC: n NBDHE, n2.0 nObtaining nand nInterpreting nRadiographs n| nNBDHE, n2.5 nGeneral
4. The nx-ray nwas ndiscovered nby
a. Heinrich nGeissler
b. Wilhelm nRoentgen
c. Johann nHittorf
d. William nCrookes
ANSWER: n B
Heinrich nGeissler nbuilt nthe nfirst nvacuum ntube nin n1838. n Wilhelm nRoentgen ndiscovered
nthe
x-ray non nNovember n8, n1895. nJohann nHittorf nobserved nin n1870 nthat ndischarges nemitted
nfrom nthe nnegative nelectrode nof na nvacuum ntube ntraveled nin nstraight nlines, nproduced
nheat, nand nresultednin na ngreenish nfluorescence. nWilliam nCrookes ndiscovered nin nthe nlate
n1870s nthat ncathode nrays nwere nstreams nof ncharged nparticles.
DIF: Recall REF: n n nPage n2 OBJ: n 4
TOP: n CDA, nRHS, nIII.B.2. nDescribe nthe ncharacteristics nof nx-radiation
MSC: n NBDHE, n2.0 nObtaining nand nInterpreting nRadiographs n| nNBDHE, n2.5 nGeneral
5. Who nexposed nthe nfirst ndental nradiograph nin nthe nUnited nStates nusing na nlive nperson?
a. Otto nWalkoff
b. Wilhelm nRoentgen
c. Edmund nKells
d. Weston nPrice
ANSWER: n C
Otto nWalkoff nwas na nGerman ndentist nwho nmade nthe nfirst ndental nradiograph. nWilhelm
nRoentgennwas na nBavarian nphysicist nwho ndiscovered nthe nx-ray. n Edmund nKells nexposed
nthe nfirst ndental nradiograph nin nthe nUnited nStates nusing na nlive nperson. n n nPrice
nintroduced nthe nbisecting ntechnique nin n1904.
DIF: Recall REF: n n nPage n4 OBJ: n 5
TOP: n CDA, nRHS, nIII.B.2. nDescribe nthe ncharacteristics nof nx-radiation
MSC: n NBDHE, n2.0 nObtaining nand nInterpreting nRadiographs n| nNBDHE, n2.5 nGeneral
6. Current nfast nradiographic nfilm nrequires % nless nexposure ntime nthan nthe ninitial
nexposurentimes nused nin n1920.
a. 33
b. 98
c. 73
, d. 2
ANSWER: n D
Current nfast nradiographic nfilm nrequires n98% nless nexposure ntime nthan nthe ninitial
nexposure ntimesnused nin n1920.
DIF: Comprehension REF: n n nPage n5 OBJ:
n 6nTOP: n CDA, nRHS, nIII.B.2. nDescribe nthe ncharacteristics nof nx-
radiation
MSC: n NBDHE, n2.0 nObtaining nand nInterpreting nRadiographs n| nNBDHE, n2.5 nGeneral
7. Who nmodified nthe nparalleling ntechnique nwith nthe nintroduction nof nthe nlong-cone
ntechnique?
a. C. nEdmund nKells
b. Franklin nW. nMcCormack
c. F. nGordon nFitzgerald
d. Howard nRiley nRaper
ANSWER: n C
C. nEdmund nKells nintroduced nthe nparalleling ntechnique nin n1896. nFranklin nW.
nMcCormack nreintroduced nthe nparalleling ntechnique nin n1920. nF. nGordon nFitzgerald
nmodified nthe nparallelingntechnique nwith nthe nintroduction nof nthe nlong-cone ntechnique.
nThis nis nthe ntechnique ncurrently nused. nHoward nRiley nRaper nmodified nthe nbisecting
ntechnique nand nintroduced nthe nbite-wing ntechnique nin n1925.
DIF: Recall REF: n n nPage n4 OBJ: n 7
TOP: n CDA, nRHS, nIII.B.2. nDescribe nthe ncharacteristics nof nx-radiation
MSC: n NBDHE, n2.0 nObtaining nand nInterpreting nRadiographs n| nNBDHE, n2.5 nGeneral
8. Which nof nthe nfollowing nis nan nadvantage nof ndigital nimaging?
a. Increased npatient nradiation nexposure
b. Increased npatient ncomfort
c. Increased nspeed nfor nviewing nimages
d. Increased nchemical nusage
ANSWER: n C
Patient nexposure nis nreduced nwith ndigital nimaging. nDigital nsensors nare nmore nsensitive nto
nx-rays nthan nfilm. nDigital nsensors nare nrigid nand nbulky, ncausing ndecreased npatient
ncomfort. nThe nimage nfrom ndigital nsensors nis nuploaded ndirectly nto nthe ncomputer nand
nmonitor nwithout nthe nneed nfor nchemical nprocessing. nThis nallows nfor nimmediate
ninterpretation nand nevaluation. nThe nimage nfromndigital nsensors nis nuploaded ndirectly nto
nthe ncomputer nand nmonitor nwithout nthe nneed nfor nchemicalnprocessing.
DIF: Comprehension REF: n n nPage n6 OBJ: n7
nTOP: n CDA, nRHS, nI.B.2. nDemonstrate nbasic nknowledge nof ndigital
nradiography
MSC: n NBDHE, n2.0 nObtaining nand nInterpreting nRadiographs n| nNBDHE, n2.5 nGeneral
9. Which ndiscovery nwas nthe nprecursor nto nthe ndiscovery nof nx-rays?
a. Beta nparticles
b. Alpha nparticles
c. Cathode nrays
d. Radioactive nmaterials
ANSWER: n C