What artifacts may occur from using a focal grid incorrectly?

Using a focal grid incorrectly can lead to lateral decentering, which results in a uniform loss of exposure across the image. This occurs when the X-ray beam is not aligned properly with the focal range of the grid. As a consequence, all areas of the film may manifest reduced image density, leading to a loss of detail and clarity.

When the focal grid is misaligned, it alters the intended path of the X-rays, effectively causing certain parts of the image to be insufficiently exposed. This phenomenon typically affects the lateral aspects of the image and generates a consistent loss in exposure that does not vary across the field, resulting in a uniformly underexposed image.

Understanding this artifact is crucial for radiologic technologists, as it highlights the importance of proper grid alignment to ensure high-quality imaging and accurate diagnostics.