Deck 40: Occupational Radiation Dose Management

Question 1

The dose limit to the general public is _________________.

A) 1 mSv/yr (100 mrem/yr)
B) 10 mSv/yr (1000 mrem/yr)
C) 100 mSv/yr (10 rem/yr)
D) 1 Sv/yr (100 rem/yr)

Answer 1

1 mSv/yr (100 mrem/yr)

Question 2

Optically stimulated luminescent (OSL) monitors are superior to the thermoluminescent dosimeters in that they are ____________________.

A) lighter weight
B) less sensitive to moisture
C) more sensitive to low exposure
D) Both A and B

Answer 2

more sensitive to low exposure

Question 3

A protective apron with a thickness of 0.25 mm lead equivalent is the minimum required.

Answer 3

True

Question 4

Every radiology department should provide a radiation safety program that includes ___________________.

A) training new employees
B) periodic in-services for all employees
C) counseling during pregnancy
D) All of the above

Question 5

The preferred way to hold patients who are unable to support themselves is to use a _____________________.

A) restraining device
B) family member
C) nurse
D) technologist

Question 6

During fluoroscopy the exposure to the collar is _____ times greater than exposure to the trunk of the body under a protective apron.

A) 50
B) 20
C) 10
D) 2

Question 7

For nursing personnel present during mobile x-ray imaging, a personnel monitoring device is required _________________.

A) at all times
B) not at all
C) during exposures
D) only for C-arms

Question 8

Technologists working fluoroscopy should use the radiologist as shielding whenever possible in addition to the apron and curtain.

Question 9

The dose limit for a technologist during pregnancy is __________________.

A) 0.05 mSv/mo (5 mrem/mo)
B) 0.5 mSv/mo (50 mrem/mo)
C) 5 mSv/mo (500 mrem/mo)
D) 50 mSv/mo (5000 mrem/mo)

Question 10

Dose limits are described as _______________________.

A) exposure dose
B) threshold dose
C) effective dose
D) dose equivalent

Question 11

The tissue weighting factor has a higher value for tissues with more ______________.

A) density
B) thickness
C) radiosensitivity
D) radioresistance

Question 12

Occupational dose is described as _________________.

A) exposure dose
B) threshold dose
C) effective dose
D) dose equivalent

Question 13

The lens of the eye should never receive more than ____________ per year.

A) 10 mSv (1 rem)
B) 150 mSv (15 rem)
C) 50 mSv (5 rem)
D) 500 mSv (50 rem)

Question 14

For diagnostic x-ray personnel, the highest occupational exposure occurs during ___________________ exams. I. fluoroscopy
II) mobile radiography
III) spinal
IV) dental

A) I and II
B) I and III
C) I and IV
D) III and IV

Question 15

Occupational radiation monitoring is required if the individual may get _____ of the recommended dose limit.

A) 100%
B) 50%
C) 25%
D) 10%

Question 16

The lowest occupational exposure of diagnostic x-ray personnel occurs during _______________.

A) CT
B) mammography
C) fluoroscopy
D) Both A and B

Question 17

The best way for technologists to reduce occupational exposure is to follow the principles of _________________________. I. ALARA
II) time and distance
III) shielding

A) I only
B) II and III
C) III only
D) I, II, and III

Question 18

Personnel working in interventional radiography should be provided with ______________________.

A) collar monitoring only
B) waist monitoring under the apron
C) extremity monitoring
D) gonadal monitoring

Question 19

There are no circumstances under which a technologist should be given an involuntary leave of absence due to pregnancy.

Question 20

The dose limit to the extremities is ______________________.

A) 5000 mSv/yr (500 rem/yr)
B) 500 mSv/yr (50 rem/yr)
C) 50 mSv/yr (5 rem/yr)
D) 5 mSv/yr (50 rem/yr)