Radiation Protection (ARRT) Board
Exam Test Graded A+
Radiation-Induced biologic damage to living organisms is termed ______ effects. - Answer somatic
Non-stochastic effects may also be referred to as ______ effects. - Answer deterministic
Lens of eye annual dose: _____ mSv - Answer 150
Embryo/fetus 1 month dose: _____ mSv - Answer 0.5
Thyroid annual dose: _______ mSv - Answer 500
Gonads annual dose: ______ mSv - Answer 50
Skin, hands, and feet annual dose: _____ mSv - Answer 500
Somatic effects that occur within minuites, hours, days or weeks after initial irradiation are termed
_______. - Answer early, or shirt term effects
What minimum radiation dose is required in order for acute radiation syndrome (ARS) to occur? -
Answer 100 rad (1 Gy)
The latent period (in ARS) decreases as radiation exposure _______. - Answer Increases
How does oxygenation affect cell/tissue radiosensitivity? - Answer The presence of oxygen increases
cell/tissue radiosensitivity.
What is the LD 50/30 for adult humans? - Answer 300 to 400 rad (3-4 Gy)
, A dose of 200 rad (2 Gy) to the skin can cause a radiation-induced reddening, termed _________. -
Answer erythema
Ionizing radiation-induced hair loss is termed _______. - Answer epilation or alopecia
What is the name of the particularly radiosensitive male sex cell? - Answer Spermatogonia
What is the target organ believed responsible for radiation-induced leukemia? - Answer Bone Marrow
What radiation exposure dose to the ovaries will result in temporary infertility? - Answer 200 rad (2 Gy)
In which portion of pregnancy is the embryo/fetus most radiosensitive? - Answer The first trimester
What is defined as "the estimated dose to the gonads that, if received by the total population gene pool,
would produce the total genetic effect on the population as the sum of the individual doses actually
recieved"? - Answer Genetically significant dose (GSD)
What are the three guidelines for determining when the gonads should be shielded? - Answer When the
gonads are within 5 cm of the primary beam, when the patient is of reproductive age and when the
clincal objectives permit
What three parts of the body should be shielded from the useful beam whenever possible? - Answer
The lens of the eye, the breasts, the reproductive organs.
When a 1 mm Pb flat contact shield is used to shield female reproductive organs, their dose is reduced
by about how much? - Answer 50%
When a 1-mm Pb flat contact shield is used to shield male reproductive organs, their dose is reduced by
about how much? - Answer 90% to 95%
Exam Test Graded A+
Radiation-Induced biologic damage to living organisms is termed ______ effects. - Answer somatic
Non-stochastic effects may also be referred to as ______ effects. - Answer deterministic
Lens of eye annual dose: _____ mSv - Answer 150
Embryo/fetus 1 month dose: _____ mSv - Answer 0.5
Thyroid annual dose: _______ mSv - Answer 500
Gonads annual dose: ______ mSv - Answer 50
Skin, hands, and feet annual dose: _____ mSv - Answer 500
Somatic effects that occur within minuites, hours, days or weeks after initial irradiation are termed
_______. - Answer early, or shirt term effects
What minimum radiation dose is required in order for acute radiation syndrome (ARS) to occur? -
Answer 100 rad (1 Gy)
The latent period (in ARS) decreases as radiation exposure _______. - Answer Increases
How does oxygenation affect cell/tissue radiosensitivity? - Answer The presence of oxygen increases
cell/tissue radiosensitivity.
What is the LD 50/30 for adult humans? - Answer 300 to 400 rad (3-4 Gy)
, A dose of 200 rad (2 Gy) to the skin can cause a radiation-induced reddening, termed _________. -
Answer erythema
Ionizing radiation-induced hair loss is termed _______. - Answer epilation or alopecia
What is the name of the particularly radiosensitive male sex cell? - Answer Spermatogonia
What is the target organ believed responsible for radiation-induced leukemia? - Answer Bone Marrow
What radiation exposure dose to the ovaries will result in temporary infertility? - Answer 200 rad (2 Gy)
In which portion of pregnancy is the embryo/fetus most radiosensitive? - Answer The first trimester
What is defined as "the estimated dose to the gonads that, if received by the total population gene pool,
would produce the total genetic effect on the population as the sum of the individual doses actually
recieved"? - Answer Genetically significant dose (GSD)
What are the three guidelines for determining when the gonads should be shielded? - Answer When the
gonads are within 5 cm of the primary beam, when the patient is of reproductive age and when the
clincal objectives permit
What three parts of the body should be shielded from the useful beam whenever possible? - Answer
The lens of the eye, the breasts, the reproductive organs.
When a 1 mm Pb flat contact shield is used to shield female reproductive organs, their dose is reduced
by about how much? - Answer 50%
When a 1-mm Pb flat contact shield is used to shield male reproductive organs, their dose is reduced by
about how much? - Answer 90% to 95%
