SCDA Radiation Safety Exam ||Verified Exam!!|| Most
Recent Exam Actual Complete Real Exam Questions
And Correct Answers (Verified Answers) Already
Graded A+ | Guaranteed Success!! Newest Exam!!!
Who established recommendations as to acceptable
levels of exposure to ionizing radiation? - Answer-National
Committee on Radiation Protection (NCRP)
What are the recommendations as to acceptable levels of
exposure to ionizing radiation called? - Answer-Maximum
permissible dose (MPD)
What does the MPD (maximum permissible dose)
represent? - Answer-Greatest amount of radiation
exposure that is accepted as not producing significant
harmful biological effects
What is the annual occupational dose limit of radiation for
adults? - Answer-Total effective dose equivalent being
equal to 5 rem (0.05Sv)
,2|Page
What is the annual occupational dose limit of radiation for
minors? - Answer-10% of the annual occupational dose
limit specified for adults
What is radiation dose? - Answer-Measure of how much
energy is absorbed when something or someone is
exposed to X-rays
What are the 2 commonly used ways of talking about
radiation dose in dental procedures? - Answer-1. Dose
estimated at the patients skin surface (correctly known as
"entrance surface air kerma")
2. Effective dose
What is effective dose? - Answer-Dose estimated at the
skin surface & is easier to measure and is used in national
surveys of x-ray equipment
How is radiation dose (dose) described? - Answer-Using
the quantity effective dose, expressed in millisievert (mSv)
, 3|Page
Dental radiology dose levels are usually a small fraction of
what? - Answer-One gray (milli gray : mGy or even micro
gray)
What is the effective dose for intraoral dental x-ray
imaging procedures? - Answer-1-8 uSv
X-rays are also known as what? - Answer-Radiographs
What are x-rays? - Answer-Photographic images that can
be seen on film/screen
How are x-rays produced? - Answer-By directing the x-ray
beams, invisible straight lines traveling at a constant
speed and made visible by processing the image
What are x-rays used for? - Answer-Help prevent, monitor,
and diagnose potential oral health care issues in a
patients mouth before they become a major problem
X-rays are produced by what type of machine? - Answer-A
machine whose source of energy is electricity