Question

"An incorrect relationship between the primary beam and the center of a focused grid results in

1. An increase in scattered radiation production
2. Grid cutoff
3. Insufficient radiographic density"
A. 1 only
B. 2 only
C. 1 and 2 only
D. 1 and 3 only

Answer 1

An incorrect relationship between the primary beam and the center of a focused grid leads to grid cutoff, which can result in a darker radiographic image due to insufficient radiographic density. The correct answer to the student's question is B. 2 only.

Step-by-step explanation:

The relationship between the primary beam and the center of a focused grid is crucial in radiography. When this relationship is incorrect, it can lead to grid cutoff, which is a decrease in the number of transmitted photons that reach the image receptor, due to them being absorbed or scattered by the grid itself. The result is an insufficient radiographic density, meaning the image will be darker than expected. This is because the grid is designed to allow X-rays traveling in a specific direction to pass through while blocking scattered radiation.

The correct answer to the question is B. 2 only, meaning that an incorrect relationship between the primary beam and the center of a focused grid results in grid cutoff, but not necessarily in an increase in scattered radiation production.