Fluoroscopy AAPA ACTUAL UPDATED
QUESTIONS AND CORRECT ANSWERS
Gray - CORRECT ANSWERS✅✅The SI unit of the absorbed dose is the:
Relative biological effectiveness - CORRECT ANSWERS✅✅Is a term used to compare the
effects of radiation on living systems:
80% - CORRECT ANSWERS✅✅What percentage of a cell is water?
Tunica Fibrosa - CORRECT ANSWERS✅✅What is the protective layer of the eyeball, or
globe?
The lubricating effects of blinking - CORRECT ANSWERS✅✅What is an orbital defense
against infection?
1-2 weeks - CORRECT ANSWERS✅✅Older, damaged cells of the corneal epithelium are
shed from the eye during blinking or tearing. The cells is this layer are repopulated how
often?
1. Fiber cells contain more cholesterol than any other than any other cell in the human body.
2. Fiber cells produce crystallin, a protein that helps determine how well the lens refracts
light.
3. The loss of fiber cells contributes to the formation of cataracts. - CORRECT
ANSWERS✅✅What 3 things are true about the fiber cells of the lens?
Neuron ganglia - CORRECT ANSWERS✅✅Which structures trigger aversion reflexes
when potentially dangerous intense light hits the retina?
Photoreceptor Transduction - CORRECT ANSWERS✅✅What is the process by which rod
and cone cells transform light energy into nerve impulses?
, What are characteristics of deterministic radiation effects? - CORRECT ANSWERS✅✅1.
The severity of damage to tissue is dose dependent.
2. A dose threshold exists such that the probability of damage from low doses is negligible.
True - CORRECT ANSWERS✅✅True or false: radiation-induced cataracts can result from
a single high dose or from chronic low-dose exposure of the lens, which is why occupational
exposures over time represent a major concern for fluoroscopy operators.
Linear no-threshold - CORRECT ANSWERS✅✅The as low as reasonably achievable
(ALARA) principle is based on what model?
10 - CORRECT ANSWERS✅✅Children are up to how many times more sensitive to tissue
and DNA damage from ionizing radiation than are adults?
5% per Sv - CORRECT ANSWERS✅✅The risk of any radiation-induced cancer from a
single fluoroscopic exam is what percent per Sv?
Sebaceous Carcinoma - CORRECT ANSWERS✅✅According to the article, which cancer
of the eyelid has been linked to ionizing radiation and ultraviolet sunlight?
Keratitis - CORRECT ANSWERS✅✅What is another name for corneal ulcers?
False - CORRECT ANSWERS✅✅True or false: a single well-defined lower dose threshold
has been established for radiation cataracts.
20 mSv - CORRECT ANSWERS✅✅According to the International Commision on
Radiological Protection, the annual limit for occupational exposure to the eye lens is how
many mSv?
1.3 to 2 Gy - CORRECT ANSWERS✅✅Based on studies of atomic bomb survivors
published in the 1960s, experts believe that radiation cataract formation requires a single dose
of 1.3Gy to what?
QUESTIONS AND CORRECT ANSWERS
Gray - CORRECT ANSWERS✅✅The SI unit of the absorbed dose is the:
Relative biological effectiveness - CORRECT ANSWERS✅✅Is a term used to compare the
effects of radiation on living systems:
80% - CORRECT ANSWERS✅✅What percentage of a cell is water?
Tunica Fibrosa - CORRECT ANSWERS✅✅What is the protective layer of the eyeball, or
globe?
The lubricating effects of blinking - CORRECT ANSWERS✅✅What is an orbital defense
against infection?
1-2 weeks - CORRECT ANSWERS✅✅Older, damaged cells of the corneal epithelium are
shed from the eye during blinking or tearing. The cells is this layer are repopulated how
often?
1. Fiber cells contain more cholesterol than any other than any other cell in the human body.
2. Fiber cells produce crystallin, a protein that helps determine how well the lens refracts
light.
3. The loss of fiber cells contributes to the formation of cataracts. - CORRECT
ANSWERS✅✅What 3 things are true about the fiber cells of the lens?
Neuron ganglia - CORRECT ANSWERS✅✅Which structures trigger aversion reflexes
when potentially dangerous intense light hits the retina?
Photoreceptor Transduction - CORRECT ANSWERS✅✅What is the process by which rod
and cone cells transform light energy into nerve impulses?
, What are characteristics of deterministic radiation effects? - CORRECT ANSWERS✅✅1.
The severity of damage to tissue is dose dependent.
2. A dose threshold exists such that the probability of damage from low doses is negligible.
True - CORRECT ANSWERS✅✅True or false: radiation-induced cataracts can result from
a single high dose or from chronic low-dose exposure of the lens, which is why occupational
exposures over time represent a major concern for fluoroscopy operators.
Linear no-threshold - CORRECT ANSWERS✅✅The as low as reasonably achievable
(ALARA) principle is based on what model?
10 - CORRECT ANSWERS✅✅Children are up to how many times more sensitive to tissue
and DNA damage from ionizing radiation than are adults?
5% per Sv - CORRECT ANSWERS✅✅The risk of any radiation-induced cancer from a
single fluoroscopic exam is what percent per Sv?
Sebaceous Carcinoma - CORRECT ANSWERS✅✅According to the article, which cancer
of the eyelid has been linked to ionizing radiation and ultraviolet sunlight?
Keratitis - CORRECT ANSWERS✅✅What is another name for corneal ulcers?
False - CORRECT ANSWERS✅✅True or false: a single well-defined lower dose threshold
has been established for radiation cataracts.
20 mSv - CORRECT ANSWERS✅✅According to the International Commision on
Radiological Protection, the annual limit for occupational exposure to the eye lens is how
many mSv?
1.3 to 2 Gy - CORRECT ANSWERS✅✅Based on studies of atomic bomb survivors
published in the 1960s, experts believe that radiation cataract formation requires a single dose
of 1.3Gy to what?
