SCDA Radiation Safety, SCDA Radiation Safety Exam,
RADIATION SAFETY SCDA Given Study Guide Questions
With Complete Solutions
.01 rem is equal to how much mSv? Correct Answer 1 mSv
~improper film positioning
-cone cutting
~improper horizontal angulation (overlapping)
-improper vertical tubehead angulation
~double exposure
-improper instrument assembly
~film backwards
-improper film selection
~film bending
-overexposure and underexposure
~patient movement
-film movement Correct Answer What are the most common
exposure errors?
1 mSv is equal to how much rem? Correct Answer .01 rem
A dose reduction exceeding what percent can be achieved in
dental radiology by using rectangular collimation? Correct
Answer 60%
A personnel monitoring device or film badge is one way to tell if
you're receiving radiation Correct Answer How do dental
radiographers know how much radiation we are receiving?
,As Low As Reasonably Achievable Correct Answer What
does "ALARA" stand for?
At least 6 feet away, at a right angle to the cone Correct
Answer How far does the operator need to stand from the
patient during exposure, and at what angle from the cone?
Careful positioning, careful selection of exposure factors, and
proper film processing all reduce retakes Correct Answer
What can be done to reduce your own radiation exposure?
Collimation Correct Answer A device that narrows a beam of
particles or waves
collimator Correct Answer a lead disc with a round or
rectangular hole in the center that is manufactured into the end
of the dental cone; this limits the size of the x ray beam to the
area that is requested by the doctor
cones Correct Answer long and lined with lead; recommended
for modern dental radiography equipment
D - Maintain a large DISTANCE between the source of
radiation and the operator Correct Answer What does the D in
TDS mean?
dark films Correct Answer films that are caused by too many
rays striking the film resulting in undaignostic radiographs
dark films Correct Answer This film can be caused by:
, -light leaks
-developing time too long
-developer concentration too strong or too high
improper fixing
paper stuck to film
Decay damage, change in bone patterns, impacted teeth, cysts,
and tumors Correct Answer What can X-rays identify?
Dental assistant's responsibility Correct Answer It is the
______________________________'s responsibility to avoid
giving any unecessary radiation to the patient
Dental radiology dose levels are usually a small fraction of
what? Correct Answer One gray (milli gray : mGy or even
micro gray)
Doctor's responsibility Correct Answer It is the
__________________'s responsibility to weigh out the risks to
make sure the radiograph is more important than the harm that
they would get
effect of radiation exposure that are expressed in the exposed
person rather than the offspring (ex. burns on skin) Correct
Answer Somatic effect
effect of radiation exposure to the reproductive cells causing
alterations in genetic code which can lead to mutations in
offspring Correct Answer Genetic effect
RADIATION SAFETY SCDA Given Study Guide Questions
With Complete Solutions
.01 rem is equal to how much mSv? Correct Answer 1 mSv
~improper film positioning
-cone cutting
~improper horizontal angulation (overlapping)
-improper vertical tubehead angulation
~double exposure
-improper instrument assembly
~film backwards
-improper film selection
~film bending
-overexposure and underexposure
~patient movement
-film movement Correct Answer What are the most common
exposure errors?
1 mSv is equal to how much rem? Correct Answer .01 rem
A dose reduction exceeding what percent can be achieved in
dental radiology by using rectangular collimation? Correct
Answer 60%
A personnel monitoring device or film badge is one way to tell if
you're receiving radiation Correct Answer How do dental
radiographers know how much radiation we are receiving?
,As Low As Reasonably Achievable Correct Answer What
does "ALARA" stand for?
At least 6 feet away, at a right angle to the cone Correct
Answer How far does the operator need to stand from the
patient during exposure, and at what angle from the cone?
Careful positioning, careful selection of exposure factors, and
proper film processing all reduce retakes Correct Answer
What can be done to reduce your own radiation exposure?
Collimation Correct Answer A device that narrows a beam of
particles or waves
collimator Correct Answer a lead disc with a round or
rectangular hole in the center that is manufactured into the end
of the dental cone; this limits the size of the x ray beam to the
area that is requested by the doctor
cones Correct Answer long and lined with lead; recommended
for modern dental radiography equipment
D - Maintain a large DISTANCE between the source of
radiation and the operator Correct Answer What does the D in
TDS mean?
dark films Correct Answer films that are caused by too many
rays striking the film resulting in undaignostic radiographs
dark films Correct Answer This film can be caused by:
, -light leaks
-developing time too long
-developer concentration too strong or too high
improper fixing
paper stuck to film
Decay damage, change in bone patterns, impacted teeth, cysts,
and tumors Correct Answer What can X-rays identify?
Dental assistant's responsibility Correct Answer It is the
______________________________'s responsibility to avoid
giving any unecessary radiation to the patient
Dental radiology dose levels are usually a small fraction of
what? Correct Answer One gray (milli gray : mGy or even
micro gray)
Doctor's responsibility Correct Answer It is the
__________________'s responsibility to weigh out the risks to
make sure the radiograph is more important than the harm that
they would get
effect of radiation exposure that are expressed in the exposed
person rather than the offspring (ex. burns on skin) Correct
Answer Somatic effect
effect of radiation exposure to the reproductive cells causing
alterations in genetic code which can lead to mutations in
offspring Correct Answer Genetic effect
