Radiation Safety Exam Study Guide
Dental radiographs are NOT used for
detection of soft tissue trauma
Which radiation produces diagnostically useful radiographs?
primary
If the tubehead drifts, which component of the x-ray machine needs attention?
extension arm
Which term describes light or white areas on the radiograph?
Radiopaque
X-ray wavelengths with the greatest energy and usefulness are
shorter
Which component of the x-ray machine functions in positioning the tubehead?
Extension arm
Which is the heart of the x-ray generating system?
the x-ray tube
Which structure appears radioplaque on dental x-ray film?
metal restorations
Radiographic density is controlled by the
miliamperes (mA) setting
Damage from ionizing x-radiation to genetic cells
can affect future generations
Which tissue has the highest radiation sensitivity?
Small lymphocytes
A lead apron and a thyroid collar
must be used on all patients but are optional for adults
Which controls the penetrating power of the x-ray beam?
Kilovoltage selector
The lead collimator
Restricts the size and shape of the primary beam
Chronic radiation exposure occurs when:
d. small doses of radiation are received over a long time period
Damage to which cells could lead to genetic mutations?
Ovarian and sperm
The annual maximum permissible dose (MPD) of radiation for an occupational worker
is:
5 rem
Which is NOT consistent with the ALARA principle?
Exposing radiographs at predetermined intervals
When in storage, the lead apron should be
hung
Dental imaging:
detects conditions that might otherwise remain undetected
detects conditions that might otherwise remain undetected
Dental radiographs are NOT used for
detection of soft tissue trauma
Which radiation produces diagnostically useful radiographs?
primary
If the tubehead drifts, which component of the x-ray machine needs attention?
extension arm
Which term describes light or white areas on the radiograph?
Radiopaque
X-ray wavelengths with the greatest energy and usefulness are
shorter
Which component of the x-ray machine functions in positioning the tubehead?
Extension arm
Which is the heart of the x-ray generating system?
the x-ray tube
Which structure appears radioplaque on dental x-ray film?
metal restorations
Radiographic density is controlled by the
miliamperes (mA) setting
Damage from ionizing x-radiation to genetic cells
can affect future generations
Which tissue has the highest radiation sensitivity?
Small lymphocytes
A lead apron and a thyroid collar
must be used on all patients but are optional for adults
Which controls the penetrating power of the x-ray beam?
Kilovoltage selector
The lead collimator
Restricts the size and shape of the primary beam
Chronic radiation exposure occurs when:
d. small doses of radiation are received over a long time period
Damage to which cells could lead to genetic mutations?
Ovarian and sperm
The annual maximum permissible dose (MPD) of radiation for an occupational worker
is:
5 rem
Which is NOT consistent with the ALARA principle?
Exposing radiographs at predetermined intervals
When in storage, the lead apron should be
hung
Dental imaging:
detects conditions that might otherwise remain undetected
detects conditions that might otherwise remain undetected
