LRA 222: LEGAL RESEARCH AND ANALYSIS – FINAL
EXAMINATION
Compton interaction. - answers✔✔For radiographic procedures, scatter radiation is primarily
the result of
the energy of the x-ray photon. - answers✔✔The probability of a Compton interaction occurring
is related to
volume of tissue irradiated and kVp. - answers✔✔The two major factors that affect the amount
of scatter radiation produced and exiting the patient are
the area of collimation.
patient thickness.
field size. - answers✔✔The volume of tissue irradiated is determined by
High kVp and large field size. - answers✔✔Which of the following produces the greatest
amount of scatter radiation exiting the patient?
round. - answers✔✔The unrestricted primary x-ray beam is
, decreased scatter production and higher contrast. - answers✔✔Increasing collimation
(decreasing the field size) results in
reduced. - answers✔✔A significant amount of collimation will have what effect on the amount
of radiation
an increase in mAs. - answers✔✔When imaging the pelvis, changing from 14 × 17 collimation to
8 × 10 collimation requires
cone or cylinder. - answers✔✔A flat piece of lead with a hole in it that has a flange directed
toward the patient is a(n)
collimator. - answers✔✔The most effective and often used radiographic beam-restriction device
is the
aperture diaphragm. - answers✔✔The beam-restriction device that results in images with the
most unsharpness around the edge of the image is the
rectangular. - answers✔✔The field shape produced by a collimator is
automatically collimates to the IR size. - answers✔✔The automatic collimator
between the patient and IR. - answers✔✔The grid is located
part measures more than 10 cm and at least 60 kVp needed for the exam only. . -
answers✔✔Grids are typically used when:
travel at an angle to the transmitted photons. - answers✔✔Grids absorb scatter radiation
because the scattered photons
EXAMINATION
Compton interaction. - answers✔✔For radiographic procedures, scatter radiation is primarily
the result of
the energy of the x-ray photon. - answers✔✔The probability of a Compton interaction occurring
is related to
volume of tissue irradiated and kVp. - answers✔✔The two major factors that affect the amount
of scatter radiation produced and exiting the patient are
the area of collimation.
patient thickness.
field size. - answers✔✔The volume of tissue irradiated is determined by
High kVp and large field size. - answers✔✔Which of the following produces the greatest
amount of scatter radiation exiting the patient?
round. - answers✔✔The unrestricted primary x-ray beam is
, decreased scatter production and higher contrast. - answers✔✔Increasing collimation
(decreasing the field size) results in
reduced. - answers✔✔A significant amount of collimation will have what effect on the amount
of radiation
an increase in mAs. - answers✔✔When imaging the pelvis, changing from 14 × 17 collimation to
8 × 10 collimation requires
cone or cylinder. - answers✔✔A flat piece of lead with a hole in it that has a flange directed
toward the patient is a(n)
collimator. - answers✔✔The most effective and often used radiographic beam-restriction device
is the
aperture diaphragm. - answers✔✔The beam-restriction device that results in images with the
most unsharpness around the edge of the image is the
rectangular. - answers✔✔The field shape produced by a collimator is
automatically collimates to the IR size. - answers✔✔The automatic collimator
between the patient and IR. - answers✔✔The grid is located
part measures more than 10 cm and at least 60 kVp needed for the exam only. . -
answers✔✔Grids are typically used when:
travel at an angle to the transmitted photons. - answers✔✔Grids absorb scatter radiation
because the scattered photons
