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