What repositioning action can correct slumping that creates ghost images in panoramic radiographs?

Moving the patient's feet forward is the correct repositioning action to correct slumping that creates ghost images in panoramic radiographs. When a patient slumps during the process of taking a panoramic radiograph, their head may tilt or shift, leading to distortion and double images known as ghost images. This occurs because of the way the x-ray beam passes through the area of interest.

By moving the patient's feet forward, the operator can help ensure that the patient's head is properly positioned and stable, reducing the likelihood of slumping. Proper alignment of the patient's body plays a critical role in ensuring that the x-ray images are taken in a way that minimizes distortion and produces clear, diagnostic-quality images. Effective patient positioning can significantly enhance the quality of the radiographic images, avoiding factors that contribute to artifacts like ghost images. Other methods like altering exposure time or changing film type do not directly address the repositioning issue related to the patient's posture.