TEST BANK For Dental Radiography:
Principles and Techniques 6th Edition
by Joen Iannucci & Laura Jansen Howerton
Chapters 1 - 35 | Complete
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Chapter 01: Radiation History
Iannucci: Dental Radiography, 6th Edition
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 r ecord
image shadows on a receptor.
c. a high-energy radiation produced by the collision of a beam of electrons w ith
a metal target in an x- ray tube.
d. a branch of medicine that deals with the use of x-rays.
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 Prin ciples of radiophysics and
radiobiology
2. A radiograph is defined as
a. a beam of energy that has the power to penetrate substances and r ecord
image shadows on a receptor.
b. a picture on film produced by the passage of x-rays through an object or b ody.
c. the art and science of making radiographs by the exposure of an image recep tor
to x-rays.
d. a form of energy carried by waves or a stream of particles.
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 x-radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.1 Prin ciples of radiophysics and
radiobiology
3. Your patient asked you why dental images are important. Which of the following i s
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 symp toms.
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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.
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
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 emitte d from
the negative electrode of a vacuum tube traveled in straight lines, produc ed heat, and
resulted in a greenish fluorescence. William Crookes discovered in the lat e 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
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
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
ANSWER: C
Otto Walkoff was a German dentist who made the first dental radiograph. Wilh elm 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 b isecting 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 i nitial
exposure times used in 1920.
a. 33
b. 98
c. 73
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d. 2
ANSWER: D
Current fast radiographic film requires 98% less exposure time than th e 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
c. F. Gordon Fitzgerald
d. Howard Riley Raper
ANSWER: C
C. Edmund Kells introduced the paralleling technique in 1896. Frank lin W. McCormack
reintroduced the paralleling technique in 1920. F. Gordon Fitzgerald modified the
paralleling technique with the introduction of the long-con e technique. This is the
technique currently used. Howard Riley Raper modified the bisecting techniqu e and
introduced the bite-wing technique in 1925.
DIF: Recall REF: Page 4 OBJ: 7
TOP: CDA, RHS, III.B.2. Describe the characteristics of x-radiation
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
8. Which of the following is an advantage of digital imaging?
a. Increased patient radiation exposure
b. Increased patient comfort
c. Increased speed for viewing images
d. Increased chemical usage
ANSWER: C
Patient exposure is reduced with digital imaging. Digital sensors are more sensitive to x-rays
than film. Digital sensors are rigid and bulky, causing decreased patient co mfort. The image
from digital sensors is uploaded directly to the computer and moni tor without the need for
chemical processing. This allows for immediate interpretation and evaluat ion. The image
from digital sensors is uploaded directly to the computer and moni tor without the need for
chemical processing.
DIF: Comprehension REF: Page 6 OBJ: 7 TOP:
CDA, RHS, I.B.2. Demonstrate basic knowledge of digital radiography
MSC: NBDHE, 2.0 Obtaining and Interpreting Radiographs | NBDHE, 2.5 General
9. Which discovery was the precursor to the discovery of x-rays?
a. Beta particles
b. Alpha particles
c. Cathode rays
d. Radioactive materials
ANSWER: C Powered by TCPDF (www.tcpdf.org)
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