Question

Perform linearity testing of the timer & consistency of mA loading

Answer 1

perform literal testing of the timer and the consisting of a loading

Answer 2

To Perform linearity testing of the timer and consistency of mA loading:

• To place the dosimeter on the table on a sheet of lead rubber to absorb back-scatter.
• Ensure that the SID is 100cm to the top of the dosimeter.
• Take 4 exposures using 80 kV and 20 mAs. Each exposure should have different mA and time combinations equal to 20 mAs.
• Record the dosimeter readings from each exposure.
• Divide each reading by 20 mAs to get mRs/mAs.
• Calculate Linearity variance.