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

TESTBANK ForDentalRadiography:
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PrinciplesandTechniques6th Edition
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byJoen Iannucci&LauraJansenHowerton
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Chapters1-35 |Complete
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,Chapter 01: Radiation History
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Iannucci:DentalRadiography,6thEdition
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MULTIPLE CHOICE b




1. Radiation is defined as b b b




a. a form of energy carried by waves or streams of particles.
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b. a beam of energythat has the power to penetrate substances and record image
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shadows on a receptor.
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c. a high-energy radiation produced by the collision of a beam of electrons with ametal
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btarget in an x-raytube. b b b b




d. a branch of medicine that deals with the use of x-rays.
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ANSWER: A b




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 the power to penetrate substances and record image shadows on a receptor.
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X-radiation is a high-energy radiation produced bythe collision of a beam of electrons with ametal b b b b b b b b b b b b b b b b




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

DIF: Recall REF: Page 2 OBJ: 1 bb b b b




TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
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MSC: NBDHE, 2.0 Obtainingand InterpretingRadiographs |NBDHE, 2.1 Principles of radiophysicsand
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radiobiology
b




2. A radiograph is defined as
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a. a beam of energythat has the power to penetrate substances and record image
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shadows on a receptor.
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b. a picture on film produced bythe passage of 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-
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rays.
d. a form of energy carried by waves or a stream of particles.
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ANSWER: B b




An x-ray is a beam of energy that has the power to penetrate substances and record image shadows
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on a receptor. A radiograph is a picture on film produced bythe passage of x-rays through an object
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or body. Radiographyis the art and science of making dental images bytheexposure of a receptor to
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x-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 bb b b b




TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
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MSC: NBDHE, 2.0 Obtainingand InterpretingRadiographs |NBDHE, 2.1 Principles of radiophysicsand
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radiobiology
b




3. Your patient asked you why dental images are important. Which of the following is the
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correct response?
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a. An oral examination with dental images limits the practitioner to what is seen
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clinically. b




b. All dental diseases and conditions produce clinical signs and symptoms.
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, c. Dental images are not a necessarycomponent of comprehensive patient care. b b b b b b b b b b




d. Manydental diseases are typicallydiscovered only through the use of dental
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images.
b




ANSWER: D b




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 use of dental images.
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DIF: Application REF: Page 2 OBJ: 2 bb b b b




TOP: CDA, RHS, III.B.2. Describe the characteristicsof x-radiation
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MSC: NBDHE, 2.0 Obtainingand Interpreting Radiographs |NBDHE, 2.5 General
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4. The x-ray was discovered by
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a. Heinrich Geissler b




b. Wilhelm Roentgen b




c. Johann Hittorf b




d. William Crookes b




ANSWER: B b




Heinrich Geissler built the first vacuum tube in 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 were
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streams of charged particles.
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DIF: Recall REF: Page 2 OBJ: 4 bb b b b




TOP: CDA, RHS, III.B.2. Describe the characteristicsof x-radiation
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MSC: NBDHE, 2.0 Obtainingand Interpreting Radiographs |NBDHE, 2.5 General
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5. Who exposed the first dental radiograph in the United States using a live person?
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a. Otto Walkoff b




b. Wilhelm Roentgen b




c. Edmund Kells b




d. Weston Price b




ANSWER: C b




Otto Walkoff was a German dentist who made the first dental radiograph. Wilhelm Roentgenwas a
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Bavarian physicist who discovered the x-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 bb b b b




TOP: CDA, RHS, III.B.2. Describe the characteristicsof x-radiation
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MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs |NBDHE, 2.5 General
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6. Current fast radiographic film requires b b b b % 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 b




Current fast radiographic film requires 98% less exposure time than the initial exposure timesused
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in 1920.
b b




DIF: Comprehension REF: Page 5 OBJ: 6 bb b b b




TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
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MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs |NBDHE, 2.5 General
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7. Who modified the parallelingtechnique with the introduction of the long-cone technique?
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a. C. Edmund Kells b b




b. Franklin W. McCormack b b




c. F.Gordon Fitzgerald b b




d. Howard RileyRaper b b




ANSWER: C b




C. Edmund Kells introduced the paralleling technique in 1896. Franklin W. McCormack
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reintroduced the parallelingtechnique in 1920. F. Gordon Fitzgerald modified the paralleling
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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.
b




DIF: Recall REF: Page 4 OBJ: 7 bb b b b




TOP: CDA, RHS, III.B.2. Describe the characteristicsof x-radiation
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MSC: NBDHE, 2.0 Obtainingand Interpreting Radiographs |NBDHE, 2.5 General
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8. Which of the followingis an advantage of digital imaging?
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a. Increased patient radiation exposure b b b




b. Increased patient comfort b b




c. Increased speed for viewing images b b b b




d. Increased chemical usage b b




ANSWER: C b




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 chemical processing.
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This allows for immediate interpretation and evaluation. The image fromdigital 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 bb b b b




TOP: CDA, RHS, I.B.2. Demonstrate basic knowledge of digital radiography
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MSC: NBDHE, 2.0 Obtainingand Interpreting Radiographs |NBDHE, 2.5 General
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9. Which discovery was the precursor to the discovery of x-rays?
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a. Beta particles b




b. Alpha particles b




c. Cathode rays b




d. Radioactive materials b




ANSWER: C b