Question

Which of the following will produce the greatest image receptor exposure

1. 5 mAs at 40"
2. 10 mAs at 40"
3. 5 mAs at 72"
4. 10 mAs at 60"

Answer 1

To calculate image receptor exposure in radiology, we use the mAs formula: mAs = mA x s. To find the greatest exposure, calculate the mAs for each option and compare them.

Step-by-step explanation:

In radiology, to calculate image receptor exposure, we use the mAs (milliamperage-seconds) formula: mAs = mA x s. Here, s represents the exposure time in seconds and mA represents the milliamperage. So, to determine the greatest image receptor exposure, we need to calculate the mAs for each option and compare them.

Option 1: 5 mAs at 40" means a milliamperage of 5 and an exposure time of 40 seconds. So, mAs = 5 x 40 = 200.

Similarly, you can calculate the mAs for the other options and compare them to find the greatest image receptor exposure.