What might occur if the software cannot recognize three collimated borders?

If the software cannot recognize three collimated borders, it can significantly affect the quality of the image. The correct response, which states that the image would be too dark, can occur because many imaging systems rely on the collimated borders to determine the appropriate exposure levels and boundaries of the image.

When the software cannot identify these borders, it may not adjust the exposure settings correctly, potentially leading to underexposure, where not enough radiation reaches the detector. This results in an image that appears too dark, as the system may not compensate adequately for the area that should be visualized.

Addressing the other options, while distortion, lack of spatial resolution, and high noise can all affect image quality, they are generally associated with different problems. Distortion may originate from improper geometric alignment, lack of spatial resolution typically involves issues with the detector or pixel size, and high noise can be related to insufficient dose or poor image processing—not primarily due to the inability to recognize collimated borders.