Elsevier Adaptive 2024/2025 Exam
Questions and Answers 100%
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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 - 🧠ANSWER ✔✔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.
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,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 - 🧠ANSWER ✔✔d. Alpha
Alpha particles have the least penetration into the soft tissue, about ≤ 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.
What is the outcome when the tissue atomic number is increased during
differential absorption?
a. Higher x-ray transmission
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,b. Fewer photoelectric interactions
c. Change in Compton interactions
d. No change in Compton interactions - 🧠ANSWER ✔✔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.
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
c. Photoelectric interaction
d. Classic coherent scattering - 🧠ANSWER ✔✔c. Photoelectric interaction
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, 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.
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 - 🧠ANSWER ✔✔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.
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Questions and Answers 100%
Guaranteed Success | Already Rated A+
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 - 🧠ANSWER ✔✔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.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. 1
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,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 - 🧠ANSWER ✔✔d. Alpha
Alpha particles have the least penetration into the soft tissue, about ≤ 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.
What is the outcome when the tissue atomic number is increased during
differential absorption?
a. Higher x-ray transmission
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. 2
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,b. Fewer photoelectric interactions
c. Change in Compton interactions
d. No change in Compton interactions - 🧠ANSWER ✔✔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.
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
c. Photoelectric interaction
d. Classic coherent scattering - 🧠ANSWER ✔✔c. Photoelectric interaction
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. 3
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, 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.
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 - 🧠ANSWER ✔✔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.
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PRIVACY STATEMENT. ALL RIGHTS RESERVED
