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RADIOGRAPHY AND TECHNIQUES 6th
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EDITION BY JOEN M IANNUCCI
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,Chapter 01: Radiation Historyyu yu yu
Iannucci: Dental Radiography, 6th Edition
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MULTIPLE CHOICE yu
1. Radiation is defined as yu yu yu
a. a form of energy carried by waves or
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streams of particles.
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b. a beam of energy that has the power to
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penetrate substances and record image
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shadows on a receptor. yu yu yu
c. a high-energy radiation produced by the
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collision of a beam of electrons with a
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metal target in an x-ray tube.
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d. a branch of medicine that deals with the
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use of x-rays.
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ANS: A yu
Radiation is a form of energy carried by waves or streams of particles. An x-ray is a
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beam of energy that has the power to penetrate substances and record image
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shadows on a receptor. X-radiation is a high-energy radiation produced by the
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collision of a beam of electrons with a metal target in an x-ray tube. Radiology
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is a branch of medicine that deals with the use of x-rays.
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DIF: Recall REF: Page 2 OBJ: 1 y u y u yu yu
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, 2.1 Principles of
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radiophysics and radiobiology
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2. A radiograph is defined as
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a. a beam of energy that has the power
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to penetrate substances and record
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image shadows on a receptor.
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b. a picture on film produced by the
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passage of x-rays through an object or
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body.
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c. the art and science of making
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radiographs by the exposure of an
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image receptor to x- rays.
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d. a form of energy carried by waves or a
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stream of particles.
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ANS: B yu
An x-ray is a beam of energy that has the power to penetrate substances and record
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image shadows on a receptor. A radiograph is a picture on film produced by the
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passage of x- rays through an object or body. Radiography is the art and science
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of making dental images by the exposure of a receptor to x-rays. Radiation is a
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form of energy carried by waves or streams of particles.
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, DIF: Comprehension REF: Page 2 OBJ: 1 y u yu yu
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, 2.1 Principles of
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radiophysics and radiobiology
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3. Your patient asked you why dental images are important. Which of
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the following is the correct response?
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a. An oral examination with dental images yu yu yu yu yu
limits the practitioner to what is seen yu yu yu yu yu yu yu
clinically. yu
b. All dental diseases and conditions yu yu yu yu
produce clinical signs and symptoms. yu yu yu yu yu
c. Dental images are not a necessary yu yu yu yu yu
component of comprehensive patient yu yu yu yu
care. yu
d. Many dental diseases are typically yu yu yu yu
discovered only through the use of yu yu yu yu yu yu
dental images. yu yu
ANS: D yu
An oral examination without dental images limits the practitioner to what is seen
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clinically. Many dental diseases and conditions produce no clinical signs and
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symptoms. Dental images are a necessary component of comprehensive patient care.
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Many dental diseases are typically discovered only through the use of dental
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images.
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DIF: Application REF: Page 2 OBJ: 2 y u y u yu yu
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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4. The x-ray was discovered by
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a. Heinrich Geissler yu
b. Wilhelm Roentgen yu
c. Johann Hittorf yu
d. William Crookes yu
ANS: B yu
Heinrich Geissler built the first vacuum tube in 1838. Wilhelm Roentgen
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discovered the x-ray on November 8, 1895. Johann Hittorf observed in 1870 that
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discharges emitted from the negative electrode of a vacuum tube traveled in
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straight lines, produced heat,
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and resulted in a greenish fluorescence. William Crookes discovered in the late
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1870s that cathode rays were streams of charged particles.
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DIF: Recall REF: Page 2 OBJ: 4 y u y u yu yu
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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