Question

question 26 / 40
which of the following exposure settings will produce a radiograph with the least amount of motion blur?
260 milliamperes (ma) and 0.0025 seconds (s)
380 milliamperes (ma) and 0.00125 seconds (s)
420 milliamperes (ma) and 0.001 seconds (s)
660 milliamperes (ma) and 0.01 seconds (s)

Explanation:

Step1: Recall motion - blur principle

Motion blur in radiography is reduced by shorter exposure times. We need to compare the exposure times of each option.

Step2: Compare the exposure times

The exposure times are 0.0025 s, 0.00125 s, 0.001 s, and 0.01 s for the four options respectively.

Step3: Identify the shortest exposure time

Among 0.0025 s, 0.00125 s, 0.001 s, and 0.01 s, the shortest exposure time is 0.001 s.

Answer:

420 milliamperes (mA) and 0.001 seconds (s)