1302 BASIC CONCEPTS IN DENTAL
RADIOLOGY POST TEST QUESTIONS &
ANSWERS
A fetus has more susceptible to damage from an ex radiation does equal to that given to
an adult because the fetus has - ANSWER More rapidly reproducing cells
The cumulative effect of x-rays on living material means - ANSWER Damage from
radiation is never completely repaired
What is the standard international unit equivalent to the REM? - ANSWER Sievert
Background, radiation, cause radiation from the following sources except - ANSWER
Medical radiographs
The radiation that is admitted from x-ray tube and strikes a patient directly is called -
ANSWER Primary radiation
A radiation film badges used to - ANSWER Monitor the radiation to which the wearer is
exposed
what is the most effective ways to protect an operator from scattered radiation is
through - ANSWER Shielding
Using F speed instead of D speed, radiographic, film requires - ANSWER Shorter
exposure time
All of the following properties of x-rays are useful except ionizing substances in human
and water - ANSWER Penetrating matter, producing a latent image in phosphorus, film
and fluorescing material, such as screen material
The producers x-ray with greater penetrating power of the operator should adjust the -
ANSWER Kilovoltage
Protective Apron should be inspected annually for - ANSWER The presence of cracks
When matter is irradiated by x-rays what radiation is produced? - ANSWER Secondary
radiation
What is the maximum permissible dose the MPD of radiation allowed annually by the
NCRP for a pregnant occupationally exposed worker? - ANSWER 0.5 REM.
Kilovoltage determines the ________ of the x-ray beam - ANSWER Penetrating quality
, The most penetrating x-rays travel in the short, wavelengths are, filtration eliminates the
high energy, x-rays thus reduces the patient to non-productive, radiation - ANSWER
The first statement is true. The second statement is false.
___________ is an appropriate area to temper early, store film packets, following
removal from the mouth - ANSWER Disposable cup
To prevent cross-contamination during dental radiography procedures, the operator
should do all of the following, except a) wear gloves b) transfer a saliva contaminated
Film packets in a disposable container c) use autoclavable or disposable image
receptor holders d) we are protective eyewear e) stand behind a protective barrier. -
ANSWER E stand behind a protective barrier
Compared to radiographic images of a patient with complete dentition exposure. Time
for periapical radiographic images on an endentulous patient should be. - ANSWER
Decreased
Blurred radiographic, images are not caused by movement of the - ANSWER Protective
apron
The following information that should be affixed to an extra oral radiographic image,
except - ANSWER The patient's age
Hey darkened area on an exposed and processed radiographic image is described as -
ANSWER Radiolucent
The overall lightness or darkness of a radiographic image is called - ANSWER Density
The mental foramen is observed in the - ANSWER Mandibular premolar
The following are principles of shadow, casting or ideal projection, except a. The object
tooth an image receptor should be parallel to each other.b. The radiation source should
be as small as possible.c. The object tooth and image receptor should be as far away
as possible d. The radiation beam should strike the object and receptor at right
angles.e. The radiation source and the object tooth should be as far apart as possible -
ANSWER C. The object tooth and image receptor should be as far away as possible.
The internal oblique line should be observed in the____________ radiographic image -
ANSWER Mandibular molar
Inter-proximal carries can be best detected with the___________ radiographic image -
ANSWER Bitewing
They complete radiographic survey CRS should be exposed on a typical adult patient
How often - ANSWER As frequently as indicated by the patient's clinical needs
RADIOLOGY POST TEST QUESTIONS &
ANSWERS
A fetus has more susceptible to damage from an ex radiation does equal to that given to
an adult because the fetus has - ANSWER More rapidly reproducing cells
The cumulative effect of x-rays on living material means - ANSWER Damage from
radiation is never completely repaired
What is the standard international unit equivalent to the REM? - ANSWER Sievert
Background, radiation, cause radiation from the following sources except - ANSWER
Medical radiographs
The radiation that is admitted from x-ray tube and strikes a patient directly is called -
ANSWER Primary radiation
A radiation film badges used to - ANSWER Monitor the radiation to which the wearer is
exposed
what is the most effective ways to protect an operator from scattered radiation is
through - ANSWER Shielding
Using F speed instead of D speed, radiographic, film requires - ANSWER Shorter
exposure time
All of the following properties of x-rays are useful except ionizing substances in human
and water - ANSWER Penetrating matter, producing a latent image in phosphorus, film
and fluorescing material, such as screen material
The producers x-ray with greater penetrating power of the operator should adjust the -
ANSWER Kilovoltage
Protective Apron should be inspected annually for - ANSWER The presence of cracks
When matter is irradiated by x-rays what radiation is produced? - ANSWER Secondary
radiation
What is the maximum permissible dose the MPD of radiation allowed annually by the
NCRP for a pregnant occupationally exposed worker? - ANSWER 0.5 REM.
Kilovoltage determines the ________ of the x-ray beam - ANSWER Penetrating quality
, The most penetrating x-rays travel in the short, wavelengths are, filtration eliminates the
high energy, x-rays thus reduces the patient to non-productive, radiation - ANSWER
The first statement is true. The second statement is false.
___________ is an appropriate area to temper early, store film packets, following
removal from the mouth - ANSWER Disposable cup
To prevent cross-contamination during dental radiography procedures, the operator
should do all of the following, except a) wear gloves b) transfer a saliva contaminated
Film packets in a disposable container c) use autoclavable or disposable image
receptor holders d) we are protective eyewear e) stand behind a protective barrier. -
ANSWER E stand behind a protective barrier
Compared to radiographic images of a patient with complete dentition exposure. Time
for periapical radiographic images on an endentulous patient should be. - ANSWER
Decreased
Blurred radiographic, images are not caused by movement of the - ANSWER Protective
apron
The following information that should be affixed to an extra oral radiographic image,
except - ANSWER The patient's age
Hey darkened area on an exposed and processed radiographic image is described as -
ANSWER Radiolucent
The overall lightness or darkness of a radiographic image is called - ANSWER Density
The mental foramen is observed in the - ANSWER Mandibular premolar
The following are principles of shadow, casting or ideal projection, except a. The object
tooth an image receptor should be parallel to each other.b. The radiation source should
be as small as possible.c. The object tooth and image receptor should be as far away
as possible d. The radiation beam should strike the object and receptor at right
angles.e. The radiation source and the object tooth should be as far apart as possible -
ANSWER C. The object tooth and image receptor should be as far away as possible.
The internal oblique line should be observed in the____________ radiographic image -
ANSWER Mandibular molar
Inter-proximal carries can be best detected with the___________ radiographic image -
ANSWER Bitewing
They complete radiographic survey CRS should be exposed on a typical adult patient
How often - ANSWER As frequently as indicated by the patient's clinical needs
