What is the required focal film distance (FFD) for a lateral cervical X-ray?

The required focal film distance (FFD) for a lateral cervical X-ray is 72 inches. This specific distance is utilized to ensure optimal image quality by providing sufficient reduction of magnification and distortion, which can occur when the X-ray source is too close to the film.

In the case of lateral cervical X-rays, a longer FFD helps to enhance the clarity of soft tissue structures and the bony anatomy of the cervical spine. This measurement also plays a critical role in minimizing patient dose while achieving the necessary detail in the image for accurate diagnosis.

Understanding the correct FFD is essential for radiologic technologists to maintain high-quality imaging standards and ensure patient safety during X-ray procedures.