問題一覧
1
Dose limits are described as __________.
effective dose
2
For diagnostic x-ray personnel, the highest occupational exposure occurs during ________ exams.
dental
3
The best way for technologists to reduce occupational exposure is to follow the principles of ___________.
ALARA
4
There are no circumstances under which technology should be given an involuntary leave of absence due to pregnancy.
True
5
A protective apron with the thickness of 0.25mm lead equivalent is the minimum required.
True
6
The dose limit to the extremities is _________.
500 mSv/yr (50 rem/yr)
7
The dose limit to the general public is _________.
1 mSv/yr (100 mrem/yr)
8
Occupational radiation monitoring is required if the individual may get ______ of the recommended dose limit.
10%
9
Every radiology department should provide a radiation safety program that includes ____________.
counseling during pregnancy
10
The lowest occupational exposure of diagnostic x-ray personnel occurs during __________.
mammography
11
The dose limit for a technologist during pregnancy is ____________.
0.5 mSv/mo (50 mrem/mo)
12
For nursing personnel present during mobile x-ray imaging, a personnel monitoring device is required __________.
not at all
13
Occupational dose is described as ___________.
dose equivalent
14
Personnel working in interventional radiography should be provided with _________.
extremity monitoring
15
The tissue weighting factor has a higher value for tissues with more __________.
radiosensitivity
16
The preferred way to hold patients who are unable to support themselves is to use a _____________.
restraining device
17
Technologist working fluoroscopy should use the radiologist as shielding whenever possible in addition to the apron and curtain.
True
18
During fluoroscopy the exposure to the collar is _____ times greater than exposure to the trunk of the body under a protective apron.
20
19
The lens of the eye should never receive more than ________ per year.
150 mSv (15 rem)
20
Optically stipulated luminescent (OSL) monitors are superior to the theroluminescent dosimeters in that they are _________.
more sensitive to low exposure