What FFD is recommended for a lateral coccyx projection?

For a lateral coccyx projection, the recommended focal film distance (FFD) is 40 inches. This distance is crucial as it helps minimize distortion of the image while ensuring optimal detail and clarity in the resultant radiograph. When imaging the coccyx, achieving the correct FFD is particularly important due to the anatomical intricacies and the position of the coccyx. A distance of 40 inches allows for a good balance between magnification and the sharpness of the bony structures being imaged.

Setting the FFD at this distance also aligns with standard practices in radiology, which prioritize consistent distances to maintain high-quality imaging across various projections. By utilizing the recommended FFD, radiologic technologists can enhance diagnostic accuracy, ensuring that clinicians have reliable images for assessment and treatment planning.