RDBG LO4 LS1-6

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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

Answer explanation

Scatter

Tags

NGSS.HS-PS4-3

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

Tags

NGSS.HS-ETS1-3

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

Tags

NGSS.HS-PS4-1