Chapter 36: Designing for Radiation Protection questions
& answers
The leakage radiation limit for x-ray tubes is less than ____ mGy/hr
at 1 meter from the tube housing. - answer 1
The x-ray control panel must show: - answer Beam on time
The collimator light must be accurate to within ____ of the SID. -
answer 2%
Positive beam limitation must be accurate to within _____ of the
SID. - answer 2%
What is the minimum requirement for filtration on x-ray
equipment operating above 70 kVp? - answer 2.5 mm Al
equivalent
Measuring the relationship between the output intensities of
adjacent mA stations is a test of: - answer Linearity
The source-to-skin distance must be no less than ____ cm on
stationary fluoroscopes. - answer 38
The output intensities of reproduced exposures should not vary
more than ____ from each other. - answer 5%
, The ____ is the primary protective barrier for the fluroscopic x-ray
tube. - answer Image intensifier
A fluoroscopy system with automatic collimation must provide an
unexposed border around the image at ____ above the table top. -
answer 35 cm
25 cm
18cm
The fluoroscopic exposure control switch is always a: - answer
Deadman
The bucky slot opening on the side of the table must be
automatically covered with ____ mm Pb during fluoroscopy. -
answer 0.25
A cumulative timer is designed to ____ of fluoroscopy beam on
time. - answer Make the radiologist aware
Primary radiation is: - answer The useful beam
The intensity of scatter radiation 1 meter from the patient is
approximately ____of the intensity of the incident beam at the
patient. - answer 0.1%
& answers
The leakage radiation limit for x-ray tubes is less than ____ mGy/hr
at 1 meter from the tube housing. - answer 1
The x-ray control panel must show: - answer Beam on time
The collimator light must be accurate to within ____ of the SID. -
answer 2%
Positive beam limitation must be accurate to within _____ of the
SID. - answer 2%
What is the minimum requirement for filtration on x-ray
equipment operating above 70 kVp? - answer 2.5 mm Al
equivalent
Measuring the relationship between the output intensities of
adjacent mA stations is a test of: - answer Linearity
The source-to-skin distance must be no less than ____ cm on
stationary fluoroscopes. - answer 38
The output intensities of reproduced exposures should not vary
more than ____ from each other. - answer 5%
, The ____ is the primary protective barrier for the fluroscopic x-ray
tube. - answer Image intensifier
A fluoroscopy system with automatic collimation must provide an
unexposed border around the image at ____ above the table top. -
answer 35 cm
25 cm
18cm
The fluoroscopic exposure control switch is always a: - answer
Deadman
The bucky slot opening on the side of the table must be
automatically covered with ____ mm Pb during fluoroscopy. -
answer 0.25
A cumulative timer is designed to ____ of fluoroscopy beam on
time. - answer Make the radiologist aware
Primary radiation is: - answer The useful beam
The intensity of scatter radiation 1 meter from the patient is
approximately ____of the intensity of the incident beam at the
patient. - answer 0.1%
