Which safety measure is crucial when positioning patients for radiographs?

Ensuring proper alignment of the X-ray machine is crucial when positioning patients for radiographs because correct alignment is essential for obtaining high-quality images and minimizing radiation exposure. When the X-ray machine is properly aligned with the area of interest, it reduces the need for repeated exposures due to poor images. This not only enhances diagnostic accuracy but also optimizes patient safety by limiting their radiation dose.

Proper alignment also involves positioning the patient's anatomical structures correctly relative to the X-ray beam, which is important for achieving the best possible image without distortion. An incorrectly aligned machine can lead to unnecessary exposure of surrounding tissues and may require additional imaging if the initial images are of poor quality. Therefore, taking the time to ensure that the machine is well-aligned fundamentally supports the principles of radiation safety in dental radiography.