RADT 1200 CHAPTERS 11-13
QUESTIONS AND ANSWERS
Effective Communication between the radiographer and the patient depends on
which of the following?
1) Ensuring body language reinforces verbal discourse so that messages are
understood as intended
2) Explaining the imaging procedure in simple terms, and giving instructions clearly
and concisely
3) Giving the patient the opportunity to ask questions, and answering them truthfully
within ethical limits - Answer- 1, 2, and 3
According to the National Council of Radiation Protection and Measurements, the
chance of malformations from fetal radiation exposure is significantly increased
above control levels only at doses:
a. Greater than 25 cGy
b. Greater than 15 cGy
c. Less than 10 cGy
d. Less than 5 cGy - Answer- b. Greater than 15 cGy
During a fluoroscopic examination, because no localizating light field exists and the
field of view is usually moved about:
a. A flat contact shield is not suitable for use
b. A shadow shield is not suitable for use
c. A shaped contact shield is not suitable for use
d. A shield that provides any type of gonadal protection is not suitable for use -
Answer- b. A shadow shield is not suitable for use
Which of the following results in an increase in the patient dose?
a. Use of the lowest kVp with the highest possible mAs for each examination
b. Use of gonadal or specific are shielding
c. Use of standardized technique charts, when automatic exposure control is not
used
d. Use of the highest practicable kVp with the lowest mAs for each examination -
Answer- a. Use of the lowest kVp with the highest possible mAs for each
examination
Flat contact shields are made of:
,a. Aluminum strips or aluminum-impregnated materials 1 mm thick
b. Tin strips or tin-impregnated materials 2 mm thick
c. Lead strips or lead-impregnated materials 1 mm thick
d. Wood strips or wood-impregnated materials 2 mm thick - Answer- c. Lead
strips or lead-impregnated materials 1 mm thick
Using appropriate technical exposure factors and an 8:1 ratio grid, an optimal quality
cross-table lateral projection of the cervical spine was obtained, using an air gap
technique and technical exposure factors that are comparable to those used with the
8:1 ratio grid, the patient dose will be:
a. about the same
b. Significantly higher
c. SIgnificantly lower
d. Not a concern because an air gap technique cannot be used in place of a grid for
a lateral projection of the cervical spine - Answer- a. about the same
The skin and gonads of the patient receive a "double dose" of x-radiation whenever:
a. Specific area shielding is used
b. An air gap technique is used
c. Gonadal shielding is used
d. A repeat radiograph is necessary, as a consequence of human or mechanical
error - Answer- d. A repeat radiograph is necessary, as a consequence of human
or mechanical error
When an effective repeat analysis program is implemented and maintained in an
imaging department, improving the overall importance of that department includes:
1. Increased awareness among staff and student radiographers of the need to
produce optimal quality images from the start
2. Radiographers becoming more careful in producing radiographic images because
they are aware that images are being reviewed
3. Designing and providing in-service education programs for imaging personnel
covering problems or concerns on specific topic that have been identified - Answer-
1, 2, and 3
Exposure of the fetus to radiation arising from diagnostic procedures:
a. Is not of concern because radiation from diagnostic procedures cannot cause any
harm to an unborn fetus
b. Will result in the immediate need for the patient to have a therapeutic abortion
because of fetal demise as a consequence of a diagnostic radiation exposure
c. Would definitely be a cause in all instances, by itself, for terminating a pregnancy
, d. Would rarely be cause, by itself, for terminating a pregnancy - Answer- d.
Would rarely be cause, by itself, for terminating a pregnancy
When an individual of childbearing age undergoes a diagnostic x-ray procedure,
gonadal shielding should be used to protect the reproductive organs from exposure
to the useful beam:
1. When these organs are in or within approximately 5 cm of properly collimated x-
ray beam
2. Unless shielding will compromise the diagnostic value of the examination
3. When the radiographer chooses to substitute gonadal shielding for adequate
collimation of the x-ray beam - Answer- 1 and 2 only
Which of the following are most often used to assess skin doses?
a. Compensating filters
b. Filtration equivalent to 4-mm aluminum placed in the path of the x-ray beam
c. Radiographic grids
d. Thermoluminescent dosimeters - Answer- d. Thermoluminescent dosimeters
Areas of the body that should be shielded from the useful beam whenever possible
are the:
1. Lens of the eye
2. Breasts
3. Thyroid glands
4. Reproductive organs - Answer- 1, 2, 3, and 4
Some clinical manifestations that can cause involuntary motion during a
radiographic procedure include:
1. Chills
2. Tremors
3. Muscle spams
4. Pain - Answer- 1, 2, 3, and 4
If in the course of performing a specific radiographic procedure 75% of the active
bone marrow were in the useful beam and received an average absorbed dose of
0.4 mGy(t), the mean marrow dose would be which of the following?
a. 0.3 mGy(t)
b. 0.6 mGy(t)
c. 0.9 mGy(t)
d. 1 mGy(t) - Answer- a. 0.3 mGy(t)
QUESTIONS AND ANSWERS
Effective Communication between the radiographer and the patient depends on
which of the following?
1) Ensuring body language reinforces verbal discourse so that messages are
understood as intended
2) Explaining the imaging procedure in simple terms, and giving instructions clearly
and concisely
3) Giving the patient the opportunity to ask questions, and answering them truthfully
within ethical limits - Answer- 1, 2, and 3
According to the National Council of Radiation Protection and Measurements, the
chance of malformations from fetal radiation exposure is significantly increased
above control levels only at doses:
a. Greater than 25 cGy
b. Greater than 15 cGy
c. Less than 10 cGy
d. Less than 5 cGy - Answer- b. Greater than 15 cGy
During a fluoroscopic examination, because no localizating light field exists and the
field of view is usually moved about:
a. A flat contact shield is not suitable for use
b. A shadow shield is not suitable for use
c. A shaped contact shield is not suitable for use
d. A shield that provides any type of gonadal protection is not suitable for use -
Answer- b. A shadow shield is not suitable for use
Which of the following results in an increase in the patient dose?
a. Use of the lowest kVp with the highest possible mAs for each examination
b. Use of gonadal or specific are shielding
c. Use of standardized technique charts, when automatic exposure control is not
used
d. Use of the highest practicable kVp with the lowest mAs for each examination -
Answer- a. Use of the lowest kVp with the highest possible mAs for each
examination
Flat contact shields are made of:
,a. Aluminum strips or aluminum-impregnated materials 1 mm thick
b. Tin strips or tin-impregnated materials 2 mm thick
c. Lead strips or lead-impregnated materials 1 mm thick
d. Wood strips or wood-impregnated materials 2 mm thick - Answer- c. Lead
strips or lead-impregnated materials 1 mm thick
Using appropriate technical exposure factors and an 8:1 ratio grid, an optimal quality
cross-table lateral projection of the cervical spine was obtained, using an air gap
technique and technical exposure factors that are comparable to those used with the
8:1 ratio grid, the patient dose will be:
a. about the same
b. Significantly higher
c. SIgnificantly lower
d. Not a concern because an air gap technique cannot be used in place of a grid for
a lateral projection of the cervical spine - Answer- a. about the same
The skin and gonads of the patient receive a "double dose" of x-radiation whenever:
a. Specific area shielding is used
b. An air gap technique is used
c. Gonadal shielding is used
d. A repeat radiograph is necessary, as a consequence of human or mechanical
error - Answer- d. A repeat radiograph is necessary, as a consequence of human
or mechanical error
When an effective repeat analysis program is implemented and maintained in an
imaging department, improving the overall importance of that department includes:
1. Increased awareness among staff and student radiographers of the need to
produce optimal quality images from the start
2. Radiographers becoming more careful in producing radiographic images because
they are aware that images are being reviewed
3. Designing and providing in-service education programs for imaging personnel
covering problems or concerns on specific topic that have been identified - Answer-
1, 2, and 3
Exposure of the fetus to radiation arising from diagnostic procedures:
a. Is not of concern because radiation from diagnostic procedures cannot cause any
harm to an unborn fetus
b. Will result in the immediate need for the patient to have a therapeutic abortion
because of fetal demise as a consequence of a diagnostic radiation exposure
c. Would definitely be a cause in all instances, by itself, for terminating a pregnancy
, d. Would rarely be cause, by itself, for terminating a pregnancy - Answer- d.
Would rarely be cause, by itself, for terminating a pregnancy
When an individual of childbearing age undergoes a diagnostic x-ray procedure,
gonadal shielding should be used to protect the reproductive organs from exposure
to the useful beam:
1. When these organs are in or within approximately 5 cm of properly collimated x-
ray beam
2. Unless shielding will compromise the diagnostic value of the examination
3. When the radiographer chooses to substitute gonadal shielding for adequate
collimation of the x-ray beam - Answer- 1 and 2 only
Which of the following are most often used to assess skin doses?
a. Compensating filters
b. Filtration equivalent to 4-mm aluminum placed in the path of the x-ray beam
c. Radiographic grids
d. Thermoluminescent dosimeters - Answer- d. Thermoluminescent dosimeters
Areas of the body that should be shielded from the useful beam whenever possible
are the:
1. Lens of the eye
2. Breasts
3. Thyroid glands
4. Reproductive organs - Answer- 1, 2, 3, and 4
Some clinical manifestations that can cause involuntary motion during a
radiographic procedure include:
1. Chills
2. Tremors
3. Muscle spams
4. Pain - Answer- 1, 2, 3, and 4
If in the course of performing a specific radiographic procedure 75% of the active
bone marrow were in the useful beam and received an average absorbed dose of
0.4 mGy(t), the mean marrow dose would be which of the following?
a. 0.3 mGy(t)
b. 0.6 mGy(t)
c. 0.9 mGy(t)
d. 1 mGy(t) - Answer- a. 0.3 mGy(t)
