,Chapter 01: Essential Concepts of Radiologic Science
p3 p3 p3 p3 p3 p3
Bushong: Radiologic Science for Technologists, 12th Edition
p3 p3 p3 p3 p3 p3 p3
MULTIPLE CHOICE p3
1. Matter is measured in p3 p3 p3 .
a. kilograms
b. joules
c. electron volts p3
d. rems
ANS: A p3
Matter is measured in kilograms.
p3 p3 p3 p3
2. Atoms and molecules are the fundamental building blocks of
p3 p3 p3 p3 p3 p3 p3 p3 .
a. energy
b. radiation
c. matter
d. gravity
ANS: C p3
Atoms and molecules are the fundamental building blocks of matter.
p3 p3 p3 p3 p3 p3 p3 p3 p3
3. Ice and steam are examples of two forms of
p3 p3 p3 p3 p3 p3 p3 p3 .
a. matter
b. radiation
c. energy
d. work
ANS: A p3
Ice and steam are examples of two forms of matter.
p3 p3 p3 p3 p3 p3 p3 p3 p3
4. The formula E = mc2 is the basis for the theory that led to the development of
p3 p3 p3 p3
p3
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 .
a. x-rays
b. electromagnetic radiation p3
c. nuclear power p3
d. cathode ray tubes p3 p3
ANS: C p3
The formula E = mc2 is the basis for the theory that led to the development of nuclear power.
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
5. Radio waves, light, and x-rays are all examples of
p3 p3 p3 p3 p3 p3 p3 p3 energy.
a. nuclear
b. thermal
c. electrical
d. electromagnetic
ANS: D p3
Electromagnetic energy includes radio waves, light, and x-rays as well as other parts of the
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
spectrum.
p3
, 6. A moving object has
p3 p3 p3 energy.
a. potential
b. kinetic
c. nuclear
d. electromagnetic
ANS: B p3
A moving object has kinetic energy.
p3 p3 p3 p3 p3
7. What is the removal of an electron from an atom called?
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
a. Ionization
b. Pair production p3
c. Irradiation
d. Electricity
ANS: A p3
The removal of an electron from an atom is called ionization.
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
8. Ionizing radiation is capable of removing
p3 p3 p3 p3 p3 from atoms as it passes through the
p3 p3 p3 p3 p3 p3
matter.
p3
a. neutrons
b. protons
c. electrons
d. ions
ANS: C p3
Ionizing radiation is capable of removing electrons from atoms as it passes through the matter.
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
9. The energy of x-rays is _
p3 p3 p3 p3 p3 .
a. thermal
b. potential
c. kinetic
d. electromagnetic
ANS: D p3
X-rays are a form of electromagnetic energy.
p3 p3 p3 p3 p3 p3
10. The biggest source of man-made ionizing radiation exposure to the public is
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
.
a. atomic fallout p3
b. diagnostic x-rays p3
c. smoke detectors p3
d. nuclear power plants p3 p3
ANS: B p3
Medical x-ray exposure is the biggest source of man-made radiation.
p3 p3 p3 p3 p3 p3 p3 p3 p3
11. In the United States, we are exposed to
p3 p3 p3 p3 p3 p3 p3 _ mSv/year of ionizing radiation from the
p3 p3 p3 p3 p3 p3
natural environment.
p3 p3
a. 0 to 5 p3 p3
b. 5 to 20 p3 p3
c. 20 to 90 p3 p3
, d. 100 to 300 p3 p3
ANS: A p3
We are exposed to about 3 mSv/yr of ionizing radiation from natural environmental sources
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
in the United States.
p3 p3 p3 p3
12. Today, radiology is considered to be a(n)
p3 p3 p3 p3 p3 p3 occupation.
a. safe
b. unsafe
c. dangerous
d. high-risk
ANS: A p3
Today, radiology is considered to be a safe occupation because of effective radiation
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
protection practices.
p3 p3
13. is a special quantity of radiologic science. p3 p3 p3 p3 p3 p3
a. Mass
b. Velocity
c. Radioactivity
d. Momentum
ANS: C p3
Radioactivity is a special quantity of radiologic science. p3 p3 p3 p3 p3 p3 p3
14. What does ALARA mean?
p3 p3 p3
a. All Level Alert Radiation Accident
p3 p3 p3 p3
b. As Low As Reasonably Achievable
p3 p3 p3 p3
c. Always Leave A Restricted Area p3 p3 p3 p3
d. As Low As Regulations Allow
p3 p3 p3 p3
ANS: B p3
ALARA means As Low As Reasonably Achievable.
p3 p3 p3 p3 p3 p3
15. Computed tomography was developed in the p3 p3 p3 p3 p3 .
a. 1890s
b. 1920s
c. 1970s
d. 1990s
ANS: C p3
Computed tomography was developed in the 1970s.
p3 p3 p3 p3 p3 p3
16. Filtration is used to p3 . p3 p3
a. absorb low-energy x-rays p3 p3
b. remove high-energy x-rays p3 p3
c. restrict the useful beam to the body part imaged
p3 p3 p3 p3 p3 p3 p3 p3
d. fabricate gonadal shields p3 p3
ANS: A p3
Filtration is used to absorb low-energy x-rays.
p3 p3 p3 p3 p3 p3
p3 p3 p3 p3 p3 p3
Bushong: Radiologic Science for Technologists, 12th Edition
p3 p3 p3 p3 p3 p3 p3
MULTIPLE CHOICE p3
1. Matter is measured in p3 p3 p3 .
a. kilograms
b. joules
c. electron volts p3
d. rems
ANS: A p3
Matter is measured in kilograms.
p3 p3 p3 p3
2. Atoms and molecules are the fundamental building blocks of
p3 p3 p3 p3 p3 p3 p3 p3 .
a. energy
b. radiation
c. matter
d. gravity
ANS: C p3
Atoms and molecules are the fundamental building blocks of matter.
p3 p3 p3 p3 p3 p3 p3 p3 p3
3. Ice and steam are examples of two forms of
p3 p3 p3 p3 p3 p3 p3 p3 .
a. matter
b. radiation
c. energy
d. work
ANS: A p3
Ice and steam are examples of two forms of matter.
p3 p3 p3 p3 p3 p3 p3 p3 p3
4. The formula E = mc2 is the basis for the theory that led to the development of
p3 p3 p3 p3
p3
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 .
a. x-rays
b. electromagnetic radiation p3
c. nuclear power p3
d. cathode ray tubes p3 p3
ANS: C p3
The formula E = mc2 is the basis for the theory that led to the development of nuclear power.
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
5. Radio waves, light, and x-rays are all examples of
p3 p3 p3 p3 p3 p3 p3 p3 energy.
a. nuclear
b. thermal
c. electrical
d. electromagnetic
ANS: D p3
Electromagnetic energy includes radio waves, light, and x-rays as well as other parts of the
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
spectrum.
p3
, 6. A moving object has
p3 p3 p3 energy.
a. potential
b. kinetic
c. nuclear
d. electromagnetic
ANS: B p3
A moving object has kinetic energy.
p3 p3 p3 p3 p3
7. What is the removal of an electron from an atom called?
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
a. Ionization
b. Pair production p3
c. Irradiation
d. Electricity
ANS: A p3
The removal of an electron from an atom is called ionization.
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
8. Ionizing radiation is capable of removing
p3 p3 p3 p3 p3 from atoms as it passes through the
p3 p3 p3 p3 p3 p3
matter.
p3
a. neutrons
b. protons
c. electrons
d. ions
ANS: C p3
Ionizing radiation is capable of removing electrons from atoms as it passes through the matter.
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
9. The energy of x-rays is _
p3 p3 p3 p3 p3 .
a. thermal
b. potential
c. kinetic
d. electromagnetic
ANS: D p3
X-rays are a form of electromagnetic energy.
p3 p3 p3 p3 p3 p3
10. The biggest source of man-made ionizing radiation exposure to the public is
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
.
a. atomic fallout p3
b. diagnostic x-rays p3
c. smoke detectors p3
d. nuclear power plants p3 p3
ANS: B p3
Medical x-ray exposure is the biggest source of man-made radiation.
p3 p3 p3 p3 p3 p3 p3 p3 p3
11. In the United States, we are exposed to
p3 p3 p3 p3 p3 p3 p3 _ mSv/year of ionizing radiation from the
p3 p3 p3 p3 p3 p3
natural environment.
p3 p3
a. 0 to 5 p3 p3
b. 5 to 20 p3 p3
c. 20 to 90 p3 p3
, d. 100 to 300 p3 p3
ANS: A p3
We are exposed to about 3 mSv/yr of ionizing radiation from natural environmental sources
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
in the United States.
p3 p3 p3 p3
12. Today, radiology is considered to be a(n)
p3 p3 p3 p3 p3 p3 occupation.
a. safe
b. unsafe
c. dangerous
d. high-risk
ANS: A p3
Today, radiology is considered to be a safe occupation because of effective radiation
p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3 p3
protection practices.
p3 p3
13. is a special quantity of radiologic science. p3 p3 p3 p3 p3 p3
a. Mass
b. Velocity
c. Radioactivity
d. Momentum
ANS: C p3
Radioactivity is a special quantity of radiologic science. p3 p3 p3 p3 p3 p3 p3
14. What does ALARA mean?
p3 p3 p3
a. All Level Alert Radiation Accident
p3 p3 p3 p3
b. As Low As Reasonably Achievable
p3 p3 p3 p3
c. Always Leave A Restricted Area p3 p3 p3 p3
d. As Low As Regulations Allow
p3 p3 p3 p3
ANS: B p3
ALARA means As Low As Reasonably Achievable.
p3 p3 p3 p3 p3 p3
15. Computed tomography was developed in the p3 p3 p3 p3 p3 .
a. 1890s
b. 1920s
c. 1970s
d. 1990s
ANS: C p3
Computed tomography was developed in the 1970s.
p3 p3 p3 p3 p3 p3
16. Filtration is used to p3 . p3 p3
a. absorb low-energy x-rays p3 p3
b. remove high-energy x-rays p3 p3
c. restrict the useful beam to the body part imaged
p3 p3 p3 p3 p3 p3 p3 p3
d. fabricate gonadal shields p3 p3
ANS: A p3
Filtration is used to absorb low-energy x-rays.
p3 p3 p3 p3 p3 p3
