Final answer:
kVp has the greatest effect on digital image receptor exposure in digital radiography.
Step-by-step explanation:
The correct answer is kVp. In digital radiography, kVp (kilovoltage peak) has the greatest effect on digital image receptor exposure.
kVp determines the quality or energy level of the X-rays produced, which affects the penetrability and contrast of the image. A higher kVp setting produces X-rays with higher energy, resulting in greater receptor exposure and higher image brightness.
On the other hand, mAs (milliamperage-second) affects the quantity or number of X-rays produced. SID (source-to-image distance) is the distance between the X-ray tube and the image receptor, while OID (object-to-image receptor distance) is the distance between the object being imaged and the receptor.