What is a likely consequence of grid and beam misalignment?

What is a likely consequence of grid and beam misalignment?

• A. Degraded Image Quality and May Require Higher Exposure
• B. No Effect on Image Quality but Reduces Dose
• C. Improves Image Quality
• D. Only Affects the Appearance of the Grid Lines

Answer: (A)

Grid alignment ensures the primary beam passes cleanly through between the grid’s lead strips. When the grid is misaligned, the primary photons are increasingly blocked by the grid, causing grid cutoff. This leads to areas of underexposure, reduced image density and contrast, and overall degraded image quality. To compensate for the loss of primary beam reaching the detector, higher exposure factors may be needed, which in turn increases patient dose. In some cases, misalignment can also reveal grid lines on the image, but the main issue is the drop in image quality and the potential need for more exposure.

Grid alignment ensures the primary beam passes cleanly through between the grid’s lead strips. When the grid is misaligned, the primary photons are increasingly blocked by the grid, causing grid cutoff. This leads to areas of underexposure, reduced image density and contrast, and overall degraded image quality. To compensate for the loss of primary beam reaching the detector, higher exposure factors may be needed, which in turn increases patient dose. In some cases, misalignment can also reveal grid lines on the image, but the main issue is the drop in image quality and the potential need for more exposure.