RADIATION SAFETY SCDA GIVEN
STUDY GUIDE
produce a photographyic image of dental fil which is made visible through processing
X rays
what can an X ray penetrate through?
skin, teeth, and bone
a photographyic record that can be seen on film that is produced by passing x rays through an
object or a body
radiograph
What are the three variable factors to consider in the proper setting of the controls on the x ray
machine?
kilovoltage, milliamperage, and time
the ability that x rays have to penetrate; affects the quality of radiographs produced
kilovoltage
,determines the number of x rays delivered (quanitity) from the x ray machine which are
available to strike the film; determines the darkness or lightness of the image produced
milliamperage and time
an aluminum disc placed within the x ray tubehead to remove the x rays that are not able to
reach the film; this device protects the patient by preventing thee non-penetrating rays from
stopping at the face
filters
a lead disc with a round or rectangular hole in the center that is manufactured into the end of
the dental cone; this limits the size of the x ray beam to the area that is requested by the doctor
collimator
long and lined with lead; recommended for modern dental radiography equipment
cones
the effect of radiation exposure to the reproductive cells causing alterations in genetic doe
which can possibly lead to mutations (changes) in offspring
,genetic effect
the effects of radiation exposure that are expressed in the exposed person rather than the
offspring i.e. cataracts, cancers
somatic effects
cells in the developing embryo, reproductive cells, and blood forming tissue cells.
sensitive cells
the most senstitive of all human tissue, especially during the first three months of pregnancy
the embryo
two sites near the oral cavity that are especially sensitive to radiation
thyroid gland and lens of the eye
who is the maximum permissible dose categorized for?
the general population, the occupational worker, and the pregnant woman
, How can you tell if you are receiving below the maximum permissible doses?
using a personnel monitoring device; they are clipped to each employee's clothes during the
work day and measuere the amount of radiation you may be receiving
films that may be unreadable because there is not enough contrast or detail for the dentist to
read them accurately
light films
What kind of film does this describe?
-developing time too short
-developer solution too weak and temperature too low
-fixing time too long
-film placed backwards in holder
light films
films that are caused by too many rays striking the film resulting in undaignostic radiographs
dark films
STUDY GUIDE
produce a photographyic image of dental fil which is made visible through processing
X rays
what can an X ray penetrate through?
skin, teeth, and bone
a photographyic record that can be seen on film that is produced by passing x rays through an
object or a body
radiograph
What are the three variable factors to consider in the proper setting of the controls on the x ray
machine?
kilovoltage, milliamperage, and time
the ability that x rays have to penetrate; affects the quality of radiographs produced
kilovoltage
,determines the number of x rays delivered (quanitity) from the x ray machine which are
available to strike the film; determines the darkness or lightness of the image produced
milliamperage and time
an aluminum disc placed within the x ray tubehead to remove the x rays that are not able to
reach the film; this device protects the patient by preventing thee non-penetrating rays from
stopping at the face
filters
a lead disc with a round or rectangular hole in the center that is manufactured into the end of
the dental cone; this limits the size of the x ray beam to the area that is requested by the doctor
collimator
long and lined with lead; recommended for modern dental radiography equipment
cones
the effect of radiation exposure to the reproductive cells causing alterations in genetic doe
which can possibly lead to mutations (changes) in offspring
,genetic effect
the effects of radiation exposure that are expressed in the exposed person rather than the
offspring i.e. cataracts, cancers
somatic effects
cells in the developing embryo, reproductive cells, and blood forming tissue cells.
sensitive cells
the most senstitive of all human tissue, especially during the first three months of pregnancy
the embryo
two sites near the oral cavity that are especially sensitive to radiation
thyroid gland and lens of the eye
who is the maximum permissible dose categorized for?
the general population, the occupational worker, and the pregnant woman
, How can you tell if you are receiving below the maximum permissible doses?
using a personnel monitoring device; they are clipped to each employee's clothes during the
work day and measuere the amount of radiation you may be receiving
films that may be unreadable because there is not enough contrast or detail for the dentist to
read them accurately
light films
What kind of film does this describe?
-developing time too short
-developer solution too weak and temperature too low
-fixing time too long
-film placed backwards in holder
light films
films that are caused by too many rays striking the film resulting in undaignostic radiographs
dark films
