What is the recommended source-to-image distance (SID) for lateral calcaneus radiographs?

The recommended source-to-image distance (SID) for lateral calcaneus radiographs is 40 inches. This distance is crucial for achieving optimal image detail and minimizing distortion. Utilizing a SID of 40 inches helps to provide a good balance between the intensity of the X-ray beam and the sharpness of the image, ensuring that the anatomical structures are well visualized in terms of size and clarity. Setting the SID at this distance also contributes to an adequate radiation dose while maintaining high-quality imaging, which is essential for accurate diagnosis and assessment of conditions related to the calcaneus.

In the context of radiographic practices, various anatomical regions have specific SID recommendations tailored to their size and positioning, and in the case of the calcaneus, 40 inches is the standard that supports these objectives effectively.