Final answer:
Increasing OID results in increased size distortion and shape distortion of a radiographic image, while typically decreasing both spatial resolution and receptor exposure due to the inverse square law.
Step-by-step explanation:
Increasing the Object-to-Image Distance (OID) in radiographic imaging has specific effects on the image quality. Firstly, an increased OID can cause an increase in size distortion, as the magnification of the image increases when the object is farther from the image receptor. Secondly, it may also lead to some degree of shape distortion depending on the orientation of the object relative to the X-ray beam and detector. An increased OID does not improve spatial resolution; in fact, it can decrease spatial resolution because of the greater potential for geometric unsharpness. Lastly, increased OID will usually result in decreased receptor exposure, as the intensity of X-rays decreases with the square of the distance according to the inverse square law—meaning more radiation is needed to maintain image brightness.