An off-center grid error results in which of the following?

An off-center grid error occurs when the X-ray beam is not aligned properly with the focused grid. This misalignment leads to a situation where not all of the scattered radiation is effectively absorbed by the grid, resulting in an uneven distribution of exposure on the receptor.

When the grid is misaligned, it primarily affects the edges of the radiograph, but this can also extend to the entire image depending on the severity of the misalignment. However, the typical representation of this error is a notable decrease in receptor exposure, particularly noticeable in the outer regions of the image. The central part of the image is where the beam is more likely to be aligned correctly, so exposure may appear to be more adequate there compared to the edges.

Thus, decreased receptor exposure across the entire radiograph accurately describes the outcome of this type of error, as the grid's inefficiency in capturing scatter radiation leads to overall less exposure on the receptor. In practice, while some areas may retain exposure, the predominant issue is a reduction in the quantity of radiation detected by the receptor due to the misalignment, underscoring the importance of proper grid positioning in radiographic techniques.