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WorksheetsRDBG LO4 LS1-6
Total questions: 12
Worksheet time: 6mins
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What distance should the radiographer stand from the patient and x-ray tube during an exposure?
1 meters
2 meters
3 meters
6 meters
It is permissible for the radiographer to stand in the useful beam for the purpose of restraining a patient?
True
False
What type of radiation poses the greatest occupational hazard in radiology?
Primary beam
Scatter
Absorbed
Select the benefit of a repeat analysis program.
Causes an increase in patient exposures
Helps minimize patient exposure by improving performance
Creates overly high standards
Increases awareness of need for optimal images
What impact does filtration have on patient dose?
Removes photons leaving the patient and decreases IR exposure
Removes scatter radiation but increases dose
Removes high energy photons that increase dose
Removes low energy photons that increase dose
What is the ideal number of lead shields that should be assigned to a portable?
3
2
1
None needed
After ___minutes of exposure, the cumulative timing device on a fluoro machine will sound.
3
5
10
15
What is the lead equivalent required for the protective lead curtain on a fluoroscopic unit?
1 mm
.25mm
.5mm
.35mm
What arrangement of a portable fluoro unit (C-arm) results in lowest dose to patient and personnel?
Tube under table
Tube over table
What is the correct definition of pitch?
Distance table travels in one 360 degree gantry rotation
Amount of gantry rotation per inch of table movement
Amount of dose used per gantry rotation
A high pitch, such as a pitch of >1, results in higher patient dose.
True
False
On average, children require what change to technical factors during an x-ray exam?
25% decrease mAs
15% increase mAs
25% decrease in kVP
15% decrease in kVp
