Final answer:
In limb projections where right and left sides are imaged side by side on one image receptor, the images should be marked with 'R' and 'L'.
Step-by-step explanation:
Appropriate marking is essential for accurate identification in limb projections where the right and left sides are photographed side by side on one Image Receptor (IR), as in R and L (right and left) anterior-posterior (AP) knee radiographs. The patient's left and right sides should be indicated on the image with an indicator.
Usually, to accomplish this, one places a "R" marker on the image's right side and a "L" marker on its left. The markers facilitate clear communication between healthcare providers involved in patient care and treatment by removing uncertainty in laterality and guaranteeing accurate interpretation of radiographic images.