Radiation Protection Test Questions with Verified Answers
Added Filtration - -The placement of aluminum wavelengths) and reduce patient radiation dose.
discs in the path of the x-ray beam between the port seal
of the tube head and the PID.
Filtration - -Any material the x-ray beam passes
through filters the beam, this is built into the tube head or it
ALARA - -The oral health care team has an ethical may be added.
responsibility to embrace the ALARA (as low as
reasonably achievable) concept, recommended by the
International Commission on Radiological Protection to Inherent Filtration - -Filtration built into the machine
minimum radiation risks. by the manufacturer. This includes the glass of the x-ray
tube, the insulating oil, and the material that seals the port.
Aluminum equivalent - -Total filtration is the sum of
the inherent and added filtration expressed in millimeters Total Filtration - -The sum of the inherent and added
of aluminum equivalent. filtration expressed in millimeters of aluminum equivalent.
Area Monitoring - -This procedure involves making Scatter Radiation - -Sometimes called secondary
an on -site survey to measure the output of the dental x- radiation, that has been deflected from its path by impact
ray unit, to check for possible high-level radiation areas in during its passage through matter.
the operatory, and to determine if any radiation at any
given area.
PID - -Position indicating device is an extension of
the tube housing and is used to direct the primary x-ray
Collimation - -This piece equipment controls the beam. The shape of the PID indicated the shape of the
size and shape of the useful beam. collimator.
Selection Criteria - -Guidelines developed by an Lead Apron - -Made of at least 0.25-mm lead or lead
expert panel of health care professionals by Public Health equivalent materials is placed over the patient's abdomen
Service and adopted by the American Dental Association to protect the reproductive organs and other radiosensitive
to assist in the dentist in deciding criteria for which tissues from potential scatter radiation during radiographic
patients need x-rays, decided case by case, evidence procedures.
based.
Thyroid Collar - -Placed around the patient's neck,
Dosimeter - -Used for personal monitoring device protects the thyroid gland and other radiosensitive tissues
worn by health care professional such as a film badge. in the neck region during exposure of intraoral
radiographs.
Exposure factors - -Operating the dental x-ray
machine includes selecting appropriate kilovolt age, Structural Shielding - -Provides the radiographer
milliamprage, and time for the patient and the area to be with protection from potential scatters radiation .
imaged.
Protective Barriers - -Exposure button is mounted
Film/image receptor holder - -Eliminates having the behind the protective barrier wall materials of cinder, sheet
patient hold the receptor in the oral cavity with the fingers rock or lead lined.
unnecessarily exposing the patient's finger.
Distance - -The operator should stand at least 6 ft.
Filter - -Usually aluminum placed in the pathways to from source of radiation and at a 45 degree from primary
remove a high percentage of the soft x-rays ( longer beam.
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Added Filtration - -The placement of aluminum wavelengths) and reduce patient radiation dose.
discs in the path of the x-ray beam between the port seal
of the tube head and the PID.
Filtration - -Any material the x-ray beam passes
through filters the beam, this is built into the tube head or it
ALARA - -The oral health care team has an ethical may be added.
responsibility to embrace the ALARA (as low as
reasonably achievable) concept, recommended by the
International Commission on Radiological Protection to Inherent Filtration - -Filtration built into the machine
minimum radiation risks. by the manufacturer. This includes the glass of the x-ray
tube, the insulating oil, and the material that seals the port.
Aluminum equivalent - -Total filtration is the sum of
the inherent and added filtration expressed in millimeters Total Filtration - -The sum of the inherent and added
of aluminum equivalent. filtration expressed in millimeters of aluminum equivalent.
Area Monitoring - -This procedure involves making Scatter Radiation - -Sometimes called secondary
an on -site survey to measure the output of the dental x- radiation, that has been deflected from its path by impact
ray unit, to check for possible high-level radiation areas in during its passage through matter.
the operatory, and to determine if any radiation at any
given area.
PID - -Position indicating device is an extension of
the tube housing and is used to direct the primary x-ray
Collimation - -This piece equipment controls the beam. The shape of the PID indicated the shape of the
size and shape of the useful beam. collimator.
Selection Criteria - -Guidelines developed by an Lead Apron - -Made of at least 0.25-mm lead or lead
expert panel of health care professionals by Public Health equivalent materials is placed over the patient's abdomen
Service and adopted by the American Dental Association to protect the reproductive organs and other radiosensitive
to assist in the dentist in deciding criteria for which tissues from potential scatter radiation during radiographic
patients need x-rays, decided case by case, evidence procedures.
based.
Thyroid Collar - -Placed around the patient's neck,
Dosimeter - -Used for personal monitoring device protects the thyroid gland and other radiosensitive tissues
worn by health care professional such as a film badge. in the neck region during exposure of intraoral
radiographs.
Exposure factors - -Operating the dental x-ray
machine includes selecting appropriate kilovolt age, Structural Shielding - -Provides the radiographer
milliamprage, and time for the patient and the area to be with protection from potential scatters radiation .
imaged.
Protective Barriers - -Exposure button is mounted
Film/image receptor holder - -Eliminates having the behind the protective barrier wall materials of cinder, sheet
patient hold the receptor in the oral cavity with the fingers rock or lead lined.
unnecessarily exposing the patient's finger.
Distance - -The operator should stand at least 6 ft.
Filter - -Usually aluminum placed in the pathways to from source of radiation and at a 45 degree from primary
remove a high percentage of the soft x-rays ( longer beam.
1/2
