Test Bank for Dental Radiography Principles and Techniques, 5th Edition, Joen Iannucci, Laura Howerton

TESTBANKForDentalRadiography:
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PrinciplesandTechniques6thEdition
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byJoenIannucci&LauraJansenHowerton
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Chapters1-35|Complete
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,Chapter01:Radiation History
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Iannucci:DentalRadiography,6thEdition
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MULTIPLECHOICE j




1. Radiationis defined as j j j




a. aform of energycarried bywaves or streams of particles.
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b. abeam of energythat has the power to penetrate substances and record image
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shadows on areceptor.
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c. a high-energy radiation produced by the collision of a beam of electrons with ametal
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target in an x-raytube.
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d. abranch of medicine that deals with the useof x-rays.
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ANSWER: A j




Radiation is a form of energy carried by waves or streams of particles. An x-ray is a beam ofenergy
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that has thepower to penetrate substances and record image shadows on areceptor.
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X-radiation is ahigh-energyradiation produced bythe collision ofa beam of electrons with ametal j j j j j j j j j j j j j j j j




target in an x-raytube. Radiologyis a branch of medicine that deals with the useof
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x-rays.

DIF: Recall REF: Page 2 OBJ: 1 jj j j j




TOP: CDA,RHS, III.B.2. Describe the characteristics of x-radiation
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MSC: NBDHE, 2.0 ObtainingandInterpretingRadiographs |NBDHE, 2.1 Principles ofradiophysicsand
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radiobiology
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2. Aradiograph is defined as
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a. abeam of energythat has the power to penetrate substances and record image
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shadows on areceptor.
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b. apicture on film produced bythe passageof x-rays through an object or body.
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c. the art and science of making radiographs by the exposure of an image receptor tox-rays.
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d. aform of energycarried bywaves or astream of particles.
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ANSWER: B j




An x-ray is a beam of energy that has the power to penetrate substances and record image shadows on
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areceptor. A radiograph is a picture on film produced bythe passageof x-rays through an object or
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body. Radiographyis theart and scienceof makingdental images bytheexposure of a receptor to x-
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rays. Radiation is a form of energy carried by waves or streams of particles.
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DIF: Comprehension REF: Page 2 OBJ: 1 jj j j j




TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
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MSC: NBDHE, 2.0 ObtainingandInterpretingRadiographs |NBDHE, 2.1 Principles ofradiophysicsand
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radiobiology
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3. Your patient asked you why dental images are important. Which of the following is thecorrect
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response?
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a. Anoral examination withdental images limitsthepractitioner towhat is seen
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clinically. j




b. Alldental diseases and conditions produceclinical signs and symptoms.
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, c. Dental images arenot a necessarycomponent of comprehensive patient care. j j j j j j j j j j




d. Manydental diseases are typicallydiscovered onlythrough the use of dental j j j j j j j j j j j




images.
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ANSWER: D j




An oral examination without dental images limits the practitioner to what is seen clinically. Many
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dental diseases and conditions produce no clinical signs and symptoms. Dental imagesare a necessary
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component of comprehensive patient care. Many dental diseases are typically discovered only
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through the useof dental images.
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DIF: Application REF: Page 2 OBJ: 2 jj j j j




TOP: CDA,RHS, III.B.2. Describe the characteristicsof x-radiation
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MSC: NBDHE, 2.0 ObtainingandInterpretingRadiographs |NBDHE, 2.5 General
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4. Thex-raywas discovered by
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a. Heinrich Geissler j




b. WilhelmRoentgen j




c. Johann Hittorf j




d. WilliamCrookes j




ANSWER: B j




Heinrich Geissler built thefirst vacuum tubein 1838. Wilhelm Roentgen discovered the
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x-ray on November 8, 1895. Johann Hittorf observed in 1870 that discharges emitted from the
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negative electrode of a vacuum tube traveled in straight lines, produced heat, and resultedin a
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greenish fluorescence. William Crookes discovered in the late 1870s that cathode rays werestreams
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of charged particles.
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DIF: Recall REF: Page 2 OBJ: 4 jj j j j




TOP: CDA,RHS, III.B.2. Describe the characteristicsof x-radiation
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MSC: NBDHE, 2.0 ObtainingandInterpretingRadiographs |NBDHE, 2.5 General
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5. Who exposed the first dental radiograph in the United States usingalive person?
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a. Otto Walkoff j




b. WilhelmRoentgen j




c. Edmund Kells j




d. Weston Price j




ANSWER: C j




Otto Walkoff was a German dentist who made the first dental radiograph. Wilhelm Roentgenwas a
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Bavarian physicist who discovered thex-ray. Edmund Kells exposed the first dental radiograph in
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the United States using a live person. Price introduced the bisecting technique in 1904.
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DIF: Recall REF: Page 4 OBJ: 5 jj j j j




TOP: CDA,RHS, III.B.2. Describe the characteristicsof x-radiation
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MSC: NBDHE, 2.0 ObtainingandInterpretingRadiographs |NBDHE, 2.5 General
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6. Current fast radiographic filmrequires j j j j % less exposure time than the initial exposure
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times used in 1920.
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a. 33
b. 98
c. 73

, d. 2
ANSWER: D j




Current fast radiographic film requires 98% less exposuretime than the initial exposuretimesused in
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1920.
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DIF: Comprehension REF: Page 5 OBJ: 6 jj j j j




TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
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MSC: NBDHE, 2.0 ObtainingandInterpretingRadiographs |NBDHE, 2.5 General
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7. Who modified the parallelingtechnique with the introduction of the long-conetechnique?
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a. C. Edmund Kells j j




b. FranklinW. McCormack j j




c. F.Gordon Fitzgerald
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d. Howard RileyRaper j j




ANSWER: C j




C. Edmund Kells introduced the paralleling technique in 1896. Franklin W. McCormack
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reintroduced theparallelingtechnique in1920. F. GordonFitzgerald modified theparalleling
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technique with the introduction of the long-cone technique. This is the technique currently used.
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Howard Riley Raper modified the bisecting technique and introduced the bite-wing technique in
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1925.
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DIF: Recall REF: Page 4 OBJ: 7 jj j j j




TOP: CDA,RHS, III.B.2. Describe the characteristicsof x-radiation
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MSC: NBDHE, 2.0 ObtainingandInterpretingRadiographs |NBDHE, 2.5 General
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8. Which ofthe followingis an advantageof digital imaging?
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a. Increased patient radiation exposure j j j




b. Increasedpatient comfort j j




c. Increased speed forviewingimages j j j j




d. Increased chemicalusage j j




ANSWER: C j




Patient exposure is reduced with digital imaging. Digital sensors are more sensitive to x-rays than
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film. Digital sensors are rigid and bulky, causing decreased patient comfort. The image from digital
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sensors is uploaded directly to the computer and monitor without the need for chemicalprocessing.
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This allows for immediateinterpretation and evaluation. Theimagefromdigital sensors is uploaded
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directly to the computer and monitor without the need for chemicalprocessing.
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DIF: Comprehension REF: Page 6 OBJ: 7 jj j j j




TOP: CDA,RHS, I.B.2. Demonstrate basicknowledge ofdigitalradiography
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MSC: NBDHE, 2.0 ObtainingandInterpretingRadiographs |NBDHE, 2.5 General
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9. Which discoverywas the precursor to thediscoveryof x-rays?
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a. Betaparticles j




b. Alphaparticles j




c. Cathoderays j




d. Radioactivematerials j




ANSWER: C j