Real images are produced by objects located between which two points?

• A. X-ray source and center of rotation
• B. X-ray source and receptor
• C. Center of rotation and receptor
• D. Center of rotation and focal trough

Answer: (C)

In panoramic imaging, real images on the receptor form when the object lies on the receptor side of the rotation center. The X-ray beam passes through the object and, for objects located between the center of rotation and the receptor, the rays converge toward the receptor plane to create a true image that the film or sensor records. If an object sits on the source side of the center of rotation, the rays do not converge on the receptor to form a real image, producing a different, often blurred or ghost-like projection. The region where the system geometry aligns to produce sharp, recordable images is bounded by the center of rotation and the receptor, so objects located between those two points generate real images.