When changing the PID length from 8 inches (20.5 cm) to 16 inches (41 cm), what corresponding change must be made to maintain image density?

Question

Quizplus · Accepted Answer

Increasing the PID length from 8 inches to 16 inches increases the distance between the x-ray source and the film, which reduces the intensity of the x-ray beam reaching the film according to the inverse square law. To maintain image density, the exposure time must be increased to allow more x-rays to reach the film and compensate for the reduced intensity.

When Changing the PID Length from 8 Inches (20