FLUOROSCOPY AAPA EXAM UPDATED QUESTIONS AND
ANSWER
Gray - CORRECT ANSWER✅✅The SI unit of the absorbed dose is the:
Relative biological effectiveness - CORRECT ANSWER✅✅Is a term used to compare the effects of
radiation on living systems:
80% - CORRECT ANSWER✅✅What percentage of a cell is water?
Tunica Fibrosa - CORRECT ANSWER✅✅What is the protective layer of the eyeball, or globe?
The lubricating effects of blinking - CORRECT ANSWER✅✅What is an orbital defense against infection?
1-2 weeks - CORRECT ANSWER✅✅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 ANSWER✅✅What 3
things are true about the fiber cells of the lens?
Neuron ganglia - CORRECT ANSWER✅✅Which structures trigger aversion reflexes when potentially
dangerous intense light hits the retina?
Photoreceptor Transduction - CORRECT ANSWER✅✅What is the process by which rod and cone cells
transform light energy into nerve impulses?
What are characteristics of deterministic radiation effects? - CORRECT ANSWER✅✅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 ANSWER✅✅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 ANSWER✅✅The as low as reasonably achievable (ALARA) principle is
based on what model?
10 - CORRECT ANSWER✅✅Children are up to how many times more sensitive to tissue and DNA
damage from ionizing radiation than are adults?
5% per Sv - CORRECT ANSWER✅✅The risk of any radiation-induced cancer from a single fluoroscopic
exam is what percent per Sv?
Sebaceous Carcinoma - CORRECT ANSWER✅✅According to the article, which cancer of the eyelid has
been linked to ionizing radiation and ultraviolet sunlight?
Keratitis - CORRECT ANSWER✅✅What is another name for corneal ulcers?
False - CORRECT ANSWER✅✅True or false: a single well-defined lower dose threshold has been
established for radiation cataracts.
20 mSv - CORRECT ANSWER✅✅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 ANSWER✅✅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?
Procedures are more complex and time consuming - CORRECT ANSWER✅✅Why have radiation doses
and reports of significant tissue injury from interventional fluoroscopy procedures increased over the
last two decades?
ANSWER
Gray - CORRECT ANSWER✅✅The SI unit of the absorbed dose is the:
Relative biological effectiveness - CORRECT ANSWER✅✅Is a term used to compare the effects of
radiation on living systems:
80% - CORRECT ANSWER✅✅What percentage of a cell is water?
Tunica Fibrosa - CORRECT ANSWER✅✅What is the protective layer of the eyeball, or globe?
The lubricating effects of blinking - CORRECT ANSWER✅✅What is an orbital defense against infection?
1-2 weeks - CORRECT ANSWER✅✅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 ANSWER✅✅What 3
things are true about the fiber cells of the lens?
Neuron ganglia - CORRECT ANSWER✅✅Which structures trigger aversion reflexes when potentially
dangerous intense light hits the retina?
Photoreceptor Transduction - CORRECT ANSWER✅✅What is the process by which rod and cone cells
transform light energy into nerve impulses?
What are characteristics of deterministic radiation effects? - CORRECT ANSWER✅✅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 ANSWER✅✅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 ANSWER✅✅The as low as reasonably achievable (ALARA) principle is
based on what model?
10 - CORRECT ANSWER✅✅Children are up to how many times more sensitive to tissue and DNA
damage from ionizing radiation than are adults?
5% per Sv - CORRECT ANSWER✅✅The risk of any radiation-induced cancer from a single fluoroscopic
exam is what percent per Sv?
Sebaceous Carcinoma - CORRECT ANSWER✅✅According to the article, which cancer of the eyelid has
been linked to ionizing radiation and ultraviolet sunlight?
Keratitis - CORRECT ANSWER✅✅What is another name for corneal ulcers?
False - CORRECT ANSWER✅✅True or false: a single well-defined lower dose threshold has been
established for radiation cataracts.
20 mSv - CORRECT ANSWER✅✅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 ANSWER✅✅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?
Procedures are more complex and time consuming - CORRECT ANSWER✅✅Why have radiation doses
and reports of significant tissue injury from interventional fluoroscopy procedures increased over the
last two decades?
