Patient Care ARRT registry prep exam 1
Questions and Answers (Solved Papers)
What is the primary purpose of the ALARA principle in
diagnostic imaging? - Correct Answers ✅To reduce
radiation dose to occupational workers
Which cardinal rule of radiation protection is mathematically
defined by the inverse square law? - Correct Answers
✅distance
In order reduce the occupational dose during a portable
radiograph of the chest, the technologist should: - Correct
Answers ✅stand several feet away from the patient during
the exposure
What property of lead makes it a valuable material for
radiation shielding devices? 1. high atomic number2. high
density3. high attenuation - Correct Answers ✅1, 2, and 3
Which of these materials requires the smallest half-value
layer (HVL) to effectively attenuate the x-ray beam? -
Correct Answers ✅lead
How does increasing x-ray beam energy influence the
attenuation properties of shielding materials? - Correct
Answers ✅A. Increased energy decreases attenuation
How does radiation dose change if a technologist increases
their distance from a radiation source by a factor of 2? -
,Patient Care ARRT registry prep exam 1
Questions and Answers (Solved Papers)
Correct Answers ✅D. Dose decreases by a factor of 2
squared
How does radiation dose change if a technologist decreases
their distance from a radiation source by a factor of 3? -
Correct Answers ✅B. Dose increases by a factor of 3
squared
A half-value layer (HVL) is the thickness of material required
to reduce the - Correct Answers ✅beam intensity by half
A shielding device constructed with a thickness equivalent to
1 HVL will reduce the quantity of radiation to: - Correct
Answers ✅1/2 the original quantity
A shielding device constructed with a thickness equivalent to
2 HVL's will reduce the quantity of radiation to: - Correct
Answers ✅C. 25% of the original quantity
The most commonly used shielding material in medical
imaging is: - Correct Answers ✅lead
What lead thickness equivalence is required for protective
lead aprons designated for general radiography, surgery, and
fluoroscopy? - Correct Answers ✅.5
, Patient Care ARRT registry prep exam 1
Questions and Answers (Solved Papers)
The use of leaded glasses is recommended for occupational
use in medical imaging in order to prevent which of the
following conditions? - Correct Answers ✅radiation induced
cataracts
What lead thickness equivalence is required for protective
glasses? - Correct Answers ✅.35mm
What lead thickness equivalence is required for protective
lead gloves? - Correct Answers ✅.25mm
What lead thickness equivalence is required for the protective
lead curtain and bucky slot cover of a fluoroscopy system? -
Correct Answers ✅.25 mm
What lead thickness equivalence is required for thyroid
shielding? - Correct Answers ✅.5mm
Which of the following areas of a radiography room requires a
primary protective barrier? 1. The wall behind the upright
bucky2. Floor under the table bucky3. The wall of the control
console - Correct Answers ✅1 and 2 only
What lead thickness equivalence is required for primary
barriers within a general radiography room? - Correct
Answers ✅1/16th inch
Questions and Answers (Solved Papers)
What is the primary purpose of the ALARA principle in
diagnostic imaging? - Correct Answers ✅To reduce
radiation dose to occupational workers
Which cardinal rule of radiation protection is mathematically
defined by the inverse square law? - Correct Answers
✅distance
In order reduce the occupational dose during a portable
radiograph of the chest, the technologist should: - Correct
Answers ✅stand several feet away from the patient during
the exposure
What property of lead makes it a valuable material for
radiation shielding devices? 1. high atomic number2. high
density3. high attenuation - Correct Answers ✅1, 2, and 3
Which of these materials requires the smallest half-value
layer (HVL) to effectively attenuate the x-ray beam? -
Correct Answers ✅lead
How does increasing x-ray beam energy influence the
attenuation properties of shielding materials? - Correct
Answers ✅A. Increased energy decreases attenuation
How does radiation dose change if a technologist increases
their distance from a radiation source by a factor of 2? -
,Patient Care ARRT registry prep exam 1
Questions and Answers (Solved Papers)
Correct Answers ✅D. Dose decreases by a factor of 2
squared
How does radiation dose change if a technologist decreases
their distance from a radiation source by a factor of 3? -
Correct Answers ✅B. Dose increases by a factor of 3
squared
A half-value layer (HVL) is the thickness of material required
to reduce the - Correct Answers ✅beam intensity by half
A shielding device constructed with a thickness equivalent to
1 HVL will reduce the quantity of radiation to: - Correct
Answers ✅1/2 the original quantity
A shielding device constructed with a thickness equivalent to
2 HVL's will reduce the quantity of radiation to: - Correct
Answers ✅C. 25% of the original quantity
The most commonly used shielding material in medical
imaging is: - Correct Answers ✅lead
What lead thickness equivalence is required for protective
lead aprons designated for general radiography, surgery, and
fluoroscopy? - Correct Answers ✅.5
, Patient Care ARRT registry prep exam 1
Questions and Answers (Solved Papers)
The use of leaded glasses is recommended for occupational
use in medical imaging in order to prevent which of the
following conditions? - Correct Answers ✅radiation induced
cataracts
What lead thickness equivalence is required for protective
glasses? - Correct Answers ✅.35mm
What lead thickness equivalence is required for protective
lead gloves? - Correct Answers ✅.25mm
What lead thickness equivalence is required for the protective
lead curtain and bucky slot cover of a fluoroscopy system? -
Correct Answers ✅.25 mm
What lead thickness equivalence is required for thyroid
shielding? - Correct Answers ✅.5mm
Which of the following areas of a radiography room requires a
primary protective barrier? 1. The wall behind the upright
bucky2. Floor under the table bucky3. The wall of the control
console - Correct Answers ✅1 and 2 only
What lead thickness equivalence is required for primary
barriers within a general radiography room? - Correct
Answers ✅1/16th inch
