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.
SELECTED 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
,file:///C:/Users/user/Downloads/Test%20Bank%20For%20Dental%20Radiography
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.
SELECTED 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 x-radiation
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.
SELECTED CORRECT ANSWER: D
, file:///C:/Users/user/Downloads/Test%20Bank%20For%20Dental%20Radiography
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
SELECTED 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
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