Patient Care ARRT registry prep exam
1 with correct answers 100% 2026
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? - 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
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
1 with correct answers 100% 2026
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? - 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
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
