TEST BANK FOR DENTAL RADIOGRAPHY,
PRINCIPLES AND TECHNIQUES, JOEN IANNUCCI &
LAURA JANSEN HOWERTON, 6TH EDITION
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Chapter 01: Radiation History
| || |
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.
ANS: | | 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 ||x-rays ||through ||an ||object ||or ||body.
c. the ||art ||and ||science ||of ||making ||radiographs ||by |the ||exposure ||of ||an ||image ||receptor ||to
x-rays.
||
d. a ||form ||of ||energy ||carried ||by |waves ||or ||a ||stream ||of ||particles.
ANS: | | B
An ||x-ray ||is ||a ||beam ||of ||energy ||that ||has ||the ||power ||to ||penetrate ||substances ||and ||record ||image
||shadows ||on ||a ||receptor. | | A ||radiograph ||is ||a ||picture ||on ||film ||produced ||by ||the ||passage ||of ||x-
rays ||through ||an ||object ||or ||body. ||Radiography |is ||the ||art ||and ||science ||of ||making ||dental ||images
||by |the ||exposure ||of ||a ||receptor ||to ||x-rays. | | Radiation ||is ||a ||form ||of ||energy ||carried ||by ||waves ||or
||streams ||of ||particles.
DIF: Comprehension 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
3. Your ||patient ||asked ||you ||why |dental ||images ||are ||important. ||Which ||of ||the ||following ||is ||the
correct ||response?
||
a. An ||oral ||examination ||with ||dental ||images ||limits ||the ||practitioner ||to ||what ||is ||seen
||clinically.
b. All ||dental ||diseases ||and ||conditions ||produce ||clinical ||signs ||and ||symptoms.
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c. Dental ||images ||are ||not ||a ||necessary |component ||of ||comprehensive ||patient ||care.
d. Many |dental ||diseases ||are ||typically |discovered ||only |through ||the ||use ||of ||dental
images.
||
ANS: | | D
An ||oral ||examination ||without ||dental ||images ||limits ||the ||practitioner ||to ||what ||is ||seen ||clinically.
||Many |dental ||diseases ||and ||conditions ||produce ||no ||clinical ||signs ||and ||symptoms. | | Dental
||images ||are ||a ||necessary ||component ||of ||comprehensive ||patient ||care. ||Many ||dental ||diseases ||are
||typically ||discovered ||only ||through ||the ||use ||of ||dental ||images.
DIF: Application REF: | | Page ||2 OBJ: | | | | 2
TOP: | | CDA, ||RHS, ||III.B.2. ||Describe ||the ||characteristics |of ||x-radiation
MSC: | | NBDHE, ||2.0 ||Obtaining ||and ||Interpreting |Radiographs ||| |NBDHE, ||2.5 ||General
4. The ||x-ray |was ||discovered ||by
a. Heinrich ||Geissler
b. Wilhelm ||Roentgen
c. Johann ||Hittorf
d. William ||Crookes
ANS: | | B
Heinrich ||Geissler ||built ||the ||first ||vacuum ||tube ||in ||1838. | | | | Wilhelm ||Roentgen ||discovered ||the
x-ray ||on ||November ||8, ||1895. | | Johann ||Hittorf ||observed ||in ||1870 ||that ||discharges ||emitted
||from ||the ||negative ||electrode ||of ||a ||vacuum ||tube ||traveled ||in ||straight ||lines, ||produced ||heat, ||and
||resulted ||in ||a ||greenish ||fluorescence. ||William ||Crookes ||discovered ||in ||the ||late ||1870s ||that
||cathode ||rays ||were ||streams ||of ||charged ||particles.
DIF: Recall REF: | | Page ||2 OBJ: | | | | 4
TOP: | | CDA, ||RHS, ||III.B.2. ||Describe ||the ||characteristics |of ||x-radiation
MSC: | | NBDHE, ||2.0 ||Obtaining ||and ||Interpreting |Radiographs ||| |NBDHE, ||2.5 ||General
5. Who ||exposed ||the ||first ||dental ||radiograph ||in ||the ||United ||States ||using ||a ||live ||person?
a. Otto ||Walkoff
b. Wilhelm ||Roentgen
c. Edmund ||Kells
d. Weston ||Price
ANS: | | C
Otto ||Walkoff ||was ||a ||German ||dentist ||who ||made ||the ||first ||dental ||radiograph. | | Wilhelm
||Roentgen ||was ||a ||Bavarian ||physicist ||who ||discovered ||the ||x-ray. | | Edmund ||Kells ||exposed ||the
||first ||dental ||radiograph ||in ||the ||United ||States ||using ||a ||live ||person. | | Price ||introduced ||the
||bisecting ||technique ||in ||1904.
DIF: Recall REF: | | Page ||4 OBJ: | | | | 5
TOP: | | CDA, ||RHS, ||III.B.2. ||Describe ||the ||characteristics |of ||x-radiation
MSC: | | NBDHE, ||2.0 ||Obtaining ||and ||Interpreting ||Radiographs ||| |NBDHE, ||2.5 ||General
6. Current ||fast ||radiographic ||film ||requires || % ||less ||exposure ||time ||than ||the ||initial ||exposure
times ||used ||in ||1920.
||
a. 33
b. 98
c. 73
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d. 2
ANS: | | D
Current ||fast ||radiographic ||film ||requires ||98% ||less ||exposure ||time ||than ||the ||initial ||exposure ||times
||used ||in ||1920.
DIF: Comprehension REF: | | Page ||5 OBJ:
| | 6 ||TOP: | | CDA, ||RHS, ||III.B.2. ||Describe ||the ||characteristics ||of ||x-
radiation
MSC: | | NBDHE, ||2.0 ||Obtaining ||and ||Interpreting ||Radiographs ||| ||NBDHE, ||2.5 ||General
7. Who ||modified ||the ||paralleling ||technique ||with ||the ||introduction ||of ||the ||long-cone ||technique?
a. C. ||Edmund ||Kells
b. Franklin ||W. ||McCormack
c. F. ||Gordon ||Fitzgerald
d. Howard ||Riley ||Raper
ANS: | | C
C. ||Edmund ||Kells ||introduced ||the ||paralleling ||technique ||in ||1896. ||Franklin ||W. ||McCormack
||reintroduced ||the ||paralleling ||technique ||in ||1920. ||F. ||Gordon ||Fitzgerald ||modified ||the ||paralleling
||technique ||with ||the ||introduction ||of ||the ||long-cone ||technique. ||This ||is ||the ||technique ||currently
||used. ||Howard ||Riley ||Raper ||modified ||the ||bisecting ||technique ||and ||introduced ||the ||bite-wing
||technique ||in ||1925.
DIF: Recall REF: | | Page ||4 OBJ: | | | | 7
TOP: | | CDA, ||RHS, ||III.B.2. ||Describe ||the ||characteristics |of ||x-radiation
MSC: | | NBDHE, ||2.0 ||Obtaining ||and ||Interpreting |Radiographs ||| |NBDHE, ||2.5 ||General
8. Which ||of ||the ||following ||is ||an ||advantage ||of ||digital ||imaging?
a. Increased ||patient ||radiation ||exposure
b. Increased ||patient ||comfort
c. Increased ||speed ||for ||viewing ||images
d. Increased ||chemical ||usage
ANS: | | C
Patient ||exposure ||is ||reduced ||with ||digital ||imaging. ||Digital ||sensors ||are ||more ||sensitive ||to ||x-rays
||than ||film. ||Digital ||sensors ||are ||rigid ||and ||bulky, ||causing ||decreased ||patient ||comfort. ||The ||image
||from ||digital ||sensors ||is ||uploaded ||directly ||to ||the ||computer ||and ||monitor ||without ||the ||need ||for
||chemical ||processing. ||This ||allows ||for ||immediate ||interpretation ||and ||evaluation. ||The ||image ||from
||digital ||sensors ||is ||uploaded ||directly ||to ||the ||computer ||and ||monitor ||without ||the ||need ||for
||chemical ||processing.
DIF: Comprehension REF: | | Page ||6 OBJ: | | 7
||TOP: | | CDA, ||RHS, ||I.B.2. ||Demonstrate ||basic ||knowledge ||of ||digital
||radiography
MSC: | | NBDHE, ||2.0 ||Obtaining ||and ||Interpreting |Radiographs ||| |NBDHE, ||2.5 ||General
9. Which ||discovery ||was ||the ||precursor ||to ||the ||discovery ||of ||x-rays?
a. Beta ||particles
b. Alpha ||particles
c. Cathode ||rays
d. Radioactive ||materials
ANS: | | C