To minimize or eliminate the Moire (aliasing) artifact in a flat panel image detector system, what should be done?

The most effective method to minimize or eliminate the Moire (aliasing) artifact in a flat panel image detector system is to remove the scatter radiation absorption grid. The Moire effect occurs when the grid lines interfere with the pixel structure of the image detector. When a grid is present, especially one that is misaligned or spaced out inappropriately, it can create patterns or repetitive artifacts in the image that are essentially artifacts of the grid's own structure rather than true anatomical features.

By removing the scatter radiation absorption grid, any interference caused by the grid lines and the image detector's pixel array is eliminated, allowing for a clearer image free from those unwanted patterns. This is crucial in maintaining image quality and ensuring accurate diagnostics.

The other options may seem reasonable in terms of dealing with artifacts, but they either do not address the core issue or could actually exacerbate the Moire effect by maintaining the grid in some form or orientation. Proper understanding of how artifacts are created and managed is vital in the field of radiography, especially in digital imaging environments.