Elsevier Adaptive Quizzes
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1. A radiologic technologist is working on barium and iodine. Which term does
the radiologic technologist use to refer to 134/56 Ba and 131/53 I ?
a. Isobar
b. Isomer
c. Isotope
d. Isotone: d. Isotone
Isotones differ in their atomic numbers and mass numbers, but they have the same
number of neutrons, that is, a constant for the quantity a (atomic number) - z (mass
number) a-z.
2. Types of ionizing radiation used in various techniques have different ranges
of penetrability into the skin. Which type of ionizing radiation penetrates least
into the skin?
a. X-ray
b. Gamma ray
c. Beta particle
d. Alpha particle: d. Alpha
Alpha particles have the least penetration into the soft tissue, about d 0.1 mm. Beta
particles have a penetration range of 0 to 2 cm. Gamma rays and x-rays have a
penetration range of 0 to 30 cm for the soft tissues such as skin.
3. What is the outcome when the tissue atomic number is increased during
differential absorption?
a. Higher x-ray transmission
b. Fewer photoelectric interactions
c. Change in Compton interactions
d. No change in Compton interactions: d. No change in Compton interactions
When the tissue atomic number is increased, there is no change in Compton
interactions. The x-ray transmission is lower, not higher. With an increase in the
tissue atomic number, the photoelectric interactions are much higher.
4. The interaction of x-rays with matter that constitutes the greatest hazard to
patients in diagnostic radiography is what?
a. Pair production
b. Compton interaction
, Elsevier Adaptive Quizzes
Study online at https://quizlet.com/_9wf81l
c. Photoelectric interaction
d. Classic coherent scattering: c. Photoelectric interaction
The interaction of x-rays with matter that constitutes the greatest hazard to patients
in diagnostic radiography is photoelectric interaction. Pair production and classic
coherent scattering do not typically occur in the diagnostic energy range. Compton
interaction constitutes the greatest hazard to radiologic technologists.
5. How many neutrons does an atom with an atomic number of 20 and an
atomic mass number of 40 contain?
a. 20
b. 30
c. 40
d. 50: a. 20
An atom contains a number of neutrons equal to the difference between the atomic
mass number and the atomic number. As the atomic number of the atom under
discussion is 20 and its mass number is 40, the atom contains 20 (40 - 20) neutrons.
All the other options (30, 40, and 50) are incorrect as per the aforementioned
calculation.
6. The electrical energy supplied to the X-ray tube is converted into what form
of energy for the production of x-rays?
a. Nuclear energy
b. Chemical energy
c. Mechanical energy
d. Electromagnetic energy: d. Electromagnetic energy
The electrical energy supplied to the x-ray tube is converted into electromagnetic
energy for the production of x-rays. Nuclear energy, chemical energy, and mechan-
ical energy are not associated with the production of x-rays.
7. What can be inferred from the number of electrons present in the outermost
shell of an atom?
a. The number determines the valance of the atom.
b. The number is lower than its group in the periodic table.
c. The number is higher than its group in the periodic table.
d. The number is always higher than its period in the periodic table.: a. The
number determines the valance of the atom.
Study online at https://quizlet.com/_9wf81l
1. A radiologic technologist is working on barium and iodine. Which term does
the radiologic technologist use to refer to 134/56 Ba and 131/53 I ?
a. Isobar
b. Isomer
c. Isotope
d. Isotone: d. Isotone
Isotones differ in their atomic numbers and mass numbers, but they have the same
number of neutrons, that is, a constant for the quantity a (atomic number) - z (mass
number) a-z.
2. Types of ionizing radiation used in various techniques have different ranges
of penetrability into the skin. Which type of ionizing radiation penetrates least
into the skin?
a. X-ray
b. Gamma ray
c. Beta particle
d. Alpha particle: d. Alpha
Alpha particles have the least penetration into the soft tissue, about d 0.1 mm. Beta
particles have a penetration range of 0 to 2 cm. Gamma rays and x-rays have a
penetration range of 0 to 30 cm for the soft tissues such as skin.
3. What is the outcome when the tissue atomic number is increased during
differential absorption?
a. Higher x-ray transmission
b. Fewer photoelectric interactions
c. Change in Compton interactions
d. No change in Compton interactions: d. No change in Compton interactions
When the tissue atomic number is increased, there is no change in Compton
interactions. The x-ray transmission is lower, not higher. With an increase in the
tissue atomic number, the photoelectric interactions are much higher.
4. The interaction of x-rays with matter that constitutes the greatest hazard to
patients in diagnostic radiography is what?
a. Pair production
b. Compton interaction
, Elsevier Adaptive Quizzes
Study online at https://quizlet.com/_9wf81l
c. Photoelectric interaction
d. Classic coherent scattering: c. Photoelectric interaction
The interaction of x-rays with matter that constitutes the greatest hazard to patients
in diagnostic radiography is photoelectric interaction. Pair production and classic
coherent scattering do not typically occur in the diagnostic energy range. Compton
interaction constitutes the greatest hazard to radiologic technologists.
5. How many neutrons does an atom with an atomic number of 20 and an
atomic mass number of 40 contain?
a. 20
b. 30
c. 40
d. 50: a. 20
An atom contains a number of neutrons equal to the difference between the atomic
mass number and the atomic number. As the atomic number of the atom under
discussion is 20 and its mass number is 40, the atom contains 20 (40 - 20) neutrons.
All the other options (30, 40, and 50) are incorrect as per the aforementioned
calculation.
6. The electrical energy supplied to the X-ray tube is converted into what form
of energy for the production of x-rays?
a. Nuclear energy
b. Chemical energy
c. Mechanical energy
d. Electromagnetic energy: d. Electromagnetic energy
The electrical energy supplied to the x-ray tube is converted into electromagnetic
energy for the production of x-rays. Nuclear energy, chemical energy, and mechan-
ical energy are not associated with the production of x-rays.
7. What can be inferred from the number of electrons present in the outermost
shell of an atom?
a. The number determines the valance of the atom.
b. The number is lower than its group in the periodic table.
c. The number is higher than its group in the periodic table.
d. The number is always higher than its period in the periodic table.: a. The
number determines the valance of the atom.
