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If the First Radiograph of a Foot Is Done Using

Question 17

Multiple Choice

If the first radiograph of a foot is done using 4 mAs at 40 inches, and a second radiograph is done using 50 inches, how much mAs should be used to maintain exposure to the IR?


A) 1 mAs
B) 2 mAs
C) 6 mAs
D) 12 mAs

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