TEST BANK For Dental Radiography:
7bn9 7bn9 7bn9 7bn9 7bn9
Principles and Techniques 6th Edition
7bn9 7bn9 7bn9 7bn9 7bn9
by Joen Iannucci & Laura Jansen Howerton
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
Chapters 1 - 35 | Complete
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
,Chapter 01: Radiation History
7bn9 7bn9 7bn9
Iannucci: Dental Radiography, 6th Edition
7bn9 7bn9 7bn9 7bn9
MULTIPLE CHOICE 7bn9
1. Radiation is defined as 7bn9 7bn9 7bn9
a. a form of energy carried by waves or streams of particles.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
b. a beam of energy that has the power to penetrate substances and
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 record imageshadows on a receptor.
7bn9 7bn9 7bn9 7bn9 7bn9
c. a high-energy radiation produced by the collision of a beam of
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 electrons with ametal target in an x-ray tube.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
d. a branch of medicine that deals with the use of x-rays.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
ANSWER: 7bn9 A
Radiation is a form of energy carried by waves or streams of particles. An
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
x-ray is a beam ofenergy that has the power to penetrate substances and
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
record image shadows on a receptor.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
X-radiation is a high-energy radiation produced by the collision of a beam of
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
electrons with ametal target in an x-ray tube. Radiology is a branch of
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
medicine that deals with the use of
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x-rays.
DIF: Recall REF: Page 2 OBJ: 1 7bn9 7bn9 7bn9 7bn9 7 b n 9
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
of radiophysicsand radiobiology
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2. A radiograph is defined as
7bn9 7bn9 7bn9 7bn9
a. a beam of energy that has the power to penetrate substances and
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 record imageshadows on a receptor.
7bn9 7bn9 7bn9 7bn9 7bn9
b. a picture on film produced by the passage of x-rays through an object or
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 body.
c. the art and science of making radiographs by the exposure of an
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
image receptor tox-rays.
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d. a form of energy carried by waves or a stream of particles.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
ANSWER: 7bn9 B
An x-ray is a beam of energy that has the power to penetrate substances and
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
record image shadows on a receptor. A radiograph is a picture on film
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
produced by the passage of x-rays through an object or body. Radiography is
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
the art and science of making dental images by theexposure of a receptor to
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n
b
7 7bn9 7bn9 7bn9 7bn9
x-rays.
7bn9 Radiation is a form of energy carried by waves or streams of
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
particles.
7bn9
DIF: Comprehension REF: Page 2 OBJ: 7bn9 7bn9 7bn9 7bn9
1TOP:
7bn9 9
n
b
7 CDA, RHS, III.B.2. Describe the characteristics of
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
x-radiation
7bn9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
of radiophysicsand radiobiology
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3. Your patient asked you why dental images are important. Which of the
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 following is thecorrect response? 7bn9 7bn9 7bn9 7bn9
a. An oral examination with dental images limits the practitioner to
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 what is seenclinically.
7bn9 7bn9 7bn9
b. All dental diseases and conditions produce clinical signs and symptoms.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
, c. Dental images are not a necessary component of comprehensive patient care.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
d. Many dental diseases are typically discovered only through the
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 use of dentalimages.
7bn9 7bn9 7bn9
ANSWER: 7bn9 D
An oral examination without dental images limits the practitioner to what is
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seen clinically. Many dental diseases and conditions produce no clinical signs
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
and symptoms. Dental imagesare a necessary component of comprehensive
7bn9 7bn9 7bn9 7bn9 9
n
b
7 7bn9 7bn9 7bn9 7bn9 7bn9
patient care. Many dental diseases are typically discovered only through the use
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
of dental images.
7bn9 7bn9 7bn9
DIF: Application REF: Page 2 OBJ: 2 7bn9 7bn9 7bn9 7bn9 7 b n 9
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
4. The x-ray was discovered by
7bn9 7bn9 7bn9 7bn9
a. Heinrich Geissler 7bn9
b. Wilhelm Roentgen 7bn9
c. Johann Hittorf 7bn9
d. William Crookes 7bn9
ANSWER: 7bn9 B
Heinrich Geissler built the first vacuum tube in 1838.
7bn9 Wilhelm Roentgen
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7 b n 9 7bn9
discovered the
7bn9 7bn9
x-ray on November 8, 1895. Johann Hittorf observed in 1870 that discharges
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
emitted from the negative electrode of a vacuum tube traveled in straight
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
lines, produced heat, and resultedin a greenish fluorescence. William Crookes
7bn9 7bn9 7bn9 7bn9 7bn9 9
n
b
7 7bn9 7bn9 7bn9 7bn9 7bn9
discovered in the late 1870s that cathode rays were streams of charged
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
particles.
7bn9
DIF: Recall REF: Page 2 OBJ: 4 7bn9 7bn9 7bn9 7bn9 7 b n 9
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
5. Who exposed the first dental radiograph in the United States using a live
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
person?
7bn9
a. Otto Walkoff 7bn9
b. Wilhelm Roentgen 7bn9
c. Edmund Kells 7bn9
d. Weston Price 7bn9
ANSWER: 7 b n 9 C
Otto Walkoff was a German dentist who made the first dental radiograph.
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Wilhelm Roentgenwas a Bavarian physicist who discovered the x-ray. Edmund
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Kells exposed the first dental radiograph in the United States using a live
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
person.
7bn9 Price introduced the bisecting technique in 1904.
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DIF: Recall REF: Page 4 OBJ: 5 7bn9 7bn9 7bn9 7bn9 7 b n 9
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
6. Current fast radiographic film requires % less exposure time than the initial
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 exposuretimes used in 1920. 7bn9 7bn9 7bn9 7bn9
a. 33
b. 98
c. 73
, d. 2
ANSWER: 7bn9 D
Current fast radiographic film requires 98% less exposure time than the initial
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
exposure timesused in 1920.
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DIF: Comprehension REF: Page 5 OBJ: 7bn9 7bn9 7bn9 7bn9
6TOP:
7bn9 9
n
b
7 CDA, RHS, III.B.2. Describe the characteristics of
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
x-radiation
7bn9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7. Who modified the paralleling technique with the introduction of the long-cone
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 technique?
a. C. Edmund Kells
7bn9 7bn9
b. Franklin W. McCormack 7bn9 7bn9
c. F. Gordon Fitzgerald
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d. Howard Riley Raper 7bn9 7bn9
ANSWER: 7bn9 C
C. Edmund Kells introduced the paralleling technique
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 in 1896. Franklin W.
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McCormack reintroduced the paralleling technique in
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 1920. F. Gordon 7bn9 7bn9
Fitzgerald modified the parallelingtechnique with the
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n
b
7 7bn9 7bn9 7bn9 introduction of the long- 7bn9 7bn9 7bn9
cone technique. This is the technique currently used.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 Howard Riley Raper 7bn9 7bn9
modified the bisecting technique and introduced the
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 bite-wing technique in 7bn9 7bn9
1925.
7bn9
DIF: Recall REF: Page 4 OBJ: 7 7bn9 7bn9 7bn9 7bn9 7 b n 9
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
8. Which of the following is an advantage of digital imaging?
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a. Increased patient radiation exposure 7bn9 7bn9 7bn9
b. Increased patient comfort 7bn9 7bn9
c. Increased speed for viewing images 7bn9 7bn9 7bn9 7bn9
d. Increased chemical usage 7bn9 7bn9
ANSWER: 7bn9 C
Patient exposure is reduced with digital imaging. Digital sensors are more
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sensitive to x-rays than film. Digital sensors are rigid and bulky, causing
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decreased patient comfort. The image from digital sensors is uploaded directly
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to the computer and monitor without the need for chemical processing. This
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allows for immediate interpretation and evaluation. The image fromdigital sensors
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n
b
7 7bn9
is uploaded directly to the computer and monitor without the need for
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chemicalprocessing.
7bn9 7bn9
DIF: Comprehension REF: Page 6 OBJ: 7 7bn9 7bn9 7bn9 7bn9 7bn9
TOP:
7bn9 CDA, RHS, I.B.2. Demonstrate basic knowledge of
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
digital radiography
7bn9 7bn9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
9. Which discovery was the precursor to the discovery of x-rays?
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a. Beta particles 7bn9
b. Alpha particles 7bn9
c. Cathode rays 7bn9
d. Radioactive materials 7bn9
ANSWER: 7bn9 C
7bn9 7bn9 7bn9 7bn9 7bn9
Principles and Techniques 6th Edition
7bn9 7bn9 7bn9 7bn9 7bn9
by Joen Iannucci & Laura Jansen Howerton
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
Chapters 1 - 35 | Complete
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
,Chapter 01: Radiation History
7bn9 7bn9 7bn9
Iannucci: Dental Radiography, 6th Edition
7bn9 7bn9 7bn9 7bn9
MULTIPLE CHOICE 7bn9
1. Radiation is defined as 7bn9 7bn9 7bn9
a. a form of energy carried by waves or streams of particles.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
b. a beam of energy that has the power to penetrate substances and
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 record imageshadows on a receptor.
7bn9 7bn9 7bn9 7bn9 7bn9
c. a high-energy radiation produced by the collision of a beam of
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 electrons with ametal target in an x-ray tube.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
d. a branch of medicine that deals with the use of x-rays.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
ANSWER: 7bn9 A
Radiation is a form of energy carried by waves or streams of particles. An
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
x-ray is a beam ofenergy that has the power to penetrate substances and
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
record image shadows on a receptor.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
X-radiation is a high-energy radiation produced by the collision of a beam of
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
electrons with ametal target in an x-ray tube. Radiology is a branch of
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
medicine that deals with the use of
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
x-rays.
DIF: Recall REF: Page 2 OBJ: 1 7bn9 7bn9 7bn9 7bn9 7 b n 9
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
of radiophysicsand radiobiology
7bn9 7bn9 7bn9 7bn9
2. A radiograph is defined as
7bn9 7bn9 7bn9 7bn9
a. a beam of energy that has the power to penetrate substances and
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 record imageshadows on a receptor.
7bn9 7bn9 7bn9 7bn9 7bn9
b. a picture on film produced by the passage of x-rays through an object or
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 body.
c. the art and science of making radiographs by the exposure of an
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
image receptor tox-rays.
7bn9 7bn9 7bn9 7bn9
d. a form of energy carried by waves or a stream of particles.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
ANSWER: 7bn9 B
An x-ray is a beam of energy that has the power to penetrate substances and
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
record image shadows on a receptor. A radiograph is a picture on film
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
produced by the passage of x-rays through an object or body. Radiography is
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
the art and science of making dental images by theexposure of a receptor to
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 9
n
b
7 7bn9 7bn9 7bn9 7bn9
x-rays.
7bn9 Radiation is a form of energy carried by waves or streams of
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
particles.
7bn9
DIF: Comprehension REF: Page 2 OBJ: 7bn9 7bn9 7bn9 7bn9
1TOP:
7bn9 9
n
b
7 CDA, RHS, III.B.2. Describe the characteristics of
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
x-radiation
7bn9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Principles
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
of radiophysicsand radiobiology
7bn9 7bn9 7bn9 7bn9
3. Your patient asked you why dental images are important. Which of the
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 following is thecorrect response? 7bn9 7bn9 7bn9 7bn9
a. An oral examination with dental images limits the practitioner to
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 what is seenclinically.
7bn9 7bn9 7bn9
b. All dental diseases and conditions produce clinical signs and symptoms.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
, c. Dental images are not a necessary component of comprehensive patient care.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
d. Many dental diseases are typically discovered only through the
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
7bn9 use of dentalimages.
7bn9 7bn9 7bn9
ANSWER: 7bn9 D
An oral examination without dental images limits the practitioner to what is
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
seen clinically. Many dental diseases and conditions produce no clinical signs
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
and symptoms. Dental imagesare a necessary component of comprehensive
7bn9 7bn9 7bn9 7bn9 9
n
b
7 7bn9 7bn9 7bn9 7bn9 7bn9
patient care. Many dental diseases are typically discovered only through the use
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
of dental images.
7bn9 7bn9 7bn9
DIF: Application REF: Page 2 OBJ: 2 7bn9 7bn9 7bn9 7bn9 7 b n 9
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
4. The x-ray was discovered by
7bn9 7bn9 7bn9 7bn9
a. Heinrich Geissler 7bn9
b. Wilhelm Roentgen 7bn9
c. Johann Hittorf 7bn9
d. William Crookes 7bn9
ANSWER: 7bn9 B
Heinrich Geissler built the first vacuum tube in 1838.
7bn9 Wilhelm Roentgen
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7 b n 9 7bn9
discovered the
7bn9 7bn9
x-ray on November 8, 1895. Johann Hittorf observed in 1870 that discharges
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
emitted from the negative electrode of a vacuum tube traveled in straight
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
lines, produced heat, and resultedin a greenish fluorescence. William Crookes
7bn9 7bn9 7bn9 7bn9 7bn9 9
n
b
7 7bn9 7bn9 7bn9 7bn9 7bn9
discovered in the late 1870s that cathode rays were streams of charged
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
particles.
7bn9
DIF: Recall REF: Page 2 OBJ: 4 7bn9 7bn9 7bn9 7bn9 7 b n 9
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
7 b n 9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
5. Who exposed the first dental radiograph in the United States using a live
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
person?
7bn9
a. Otto Walkoff 7bn9
b. Wilhelm Roentgen 7bn9
c. Edmund Kells 7bn9
d. Weston Price 7bn9
ANSWER: 7 b n 9 C
Otto Walkoff was a German dentist who made the first dental radiograph.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9
Wilhelm Roentgenwas a Bavarian physicist who discovered the x-ray. Edmund
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Kells exposed the first dental radiograph in the United States using a live
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person.
7bn9 Price introduced the bisecting technique in 1904.
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DIF: Recall REF: Page 4 OBJ: 5 7bn9 7bn9 7bn9 7bn9 7 b n 9
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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6. Current fast radiographic film requires % less exposure time than the initial
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7bn9 exposuretimes used in 1920. 7bn9 7bn9 7bn9 7bn9
a. 33
b. 98
c. 73
, d. 2
ANSWER: 7bn9 D
Current fast radiographic film requires 98% less exposure time than the initial
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exposure timesused in 1920.
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DIF: Comprehension REF: Page 5 OBJ: 7bn9 7bn9 7bn9 7bn9
6TOP:
7bn9 9
n
b
7 CDA, RHS, III.B.2. Describe the characteristics of
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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 paralleling technique with the introduction of the long-cone
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7bn9 technique?
a. C. Edmund Kells
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b. Franklin W. McCormack 7bn9 7bn9
c. F. Gordon Fitzgerald
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d. Howard Riley Raper 7bn9 7bn9
ANSWER: 7bn9 C
C. Edmund Kells introduced the paralleling technique
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 in 1896. Franklin W.
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McCormack reintroduced the paralleling technique in
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 1920. F. Gordon 7bn9 7bn9
Fitzgerald modified the parallelingtechnique with the
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n
b
7 7bn9 7bn9 7bn9 introduction of the long- 7bn9 7bn9 7bn9
cone technique. This is the technique currently used.
7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 7bn9 Howard Riley Raper 7bn9 7bn9
modified the bisecting technique and introduced the
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1925.
7bn9
DIF: Recall REF: Page 4 OBJ: 7 7bn9 7bn9 7bn9 7bn9 7 b n 9
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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8. Which of the following is an advantage of digital imaging?
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a. Increased patient radiation exposure 7bn9 7bn9 7bn9
b. Increased patient comfort 7bn9 7bn9
c. Increased speed for viewing images 7bn9 7bn9 7bn9 7bn9
d. Increased chemical usage 7bn9 7bn9
ANSWER: 7bn9 C
Patient exposure is reduced with digital imaging. Digital sensors are more
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sensitive to x-rays than film. Digital sensors are rigid and bulky, causing
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decreased patient comfort. The image from digital sensors is uploaded directly
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to the computer and monitor without the need for chemical processing. This
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allows for immediate interpretation and evaluation. The image fromdigital sensors
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n
b
7 7bn9
is uploaded directly to the computer and monitor without the need for
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chemicalprocessing.
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DIF: Comprehension REF: Page 6 OBJ: 7 7bn9 7bn9 7bn9 7bn9 7bn9
TOP:
7bn9 CDA, RHS, I.B.2. Demonstrate basic knowledge of
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digital radiography
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MSC: NBDHE, 2.0 Obtaining and 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 7bn9
b. Alpha particles 7bn9
c. Cathode rays 7bn9
d. Radioactive materials 7bn9
ANSWER: 7bn9 C
