TEST BANK - Dental Radiography:
Principles and Techniques 6th Edition by
Joen Iannucci & Laura J. Howerton
VERIFIED CORRECT ANSWERS
WITH RATIONALES| CHAPTERS 1-35
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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.
CORRECT ANSWER> 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.
CORRECT ANSWER> 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
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x-radiation
ud
yS
2
H
, 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.
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.
CORRECT ANSWER> 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
CORRECT ANSWER> 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
St
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
ud
yS
3
H
, 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
CORRECT ANSWER> 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
d. 2
CORRECT ANSWER> 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
St
c. F. Gordon Fitzgerald
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d. Howard Riley Raper
yS
4
H
Principles and Techniques 6th Edition by
Joen Iannucci & Laura J. Howerton
VERIFIED CORRECT ANSWERS
WITH RATIONALES| CHAPTERS 1-35
St
ud
yS
1
H
, 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.
CORRECT ANSWER> 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.
CORRECT ANSWER> 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
St
x-radiation
ud
yS
2
H
, 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.
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.
CORRECT ANSWER> 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
CORRECT ANSWER> 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
St
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
ud
yS
3
H
, 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
CORRECT ANSWER> 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
d. 2
CORRECT ANSWER> 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
St
c. F. Gordon Fitzgerald
ud
d. Howard Riley Raper
yS
4
H
