What is the correct patient positioning for an AP or PA clavicle projection?

For an anterior-posterior (AP) or posterior-anterior (PA) projection of the clavicle, proper patient positioning is crucial to obtain the best images while minimizing the risk of repeating the procedure. The correct choice involves the patient standing against the bucky, which allows for more accurate alignment of the clavicle with the imaging receptor.

When the patient stands against the bucky, they can naturally assume a stable posture that enhances the clarity of the clavicle's projection. Turning the head to the contralateral side (the side opposite to the clavicle being examined) not only helps to minimize overexposure of the lung on the side being imaged but also allows for a more unobstructed view of the clavicle itself. This positioning aligns the clavicle parallel to the film, reducing distortion and improving image quality.

In contrast, the other positioning options may lead to suboptimal images due to factors such as overlapping structures or improper alignment of the clavicle with respect to the imaging receptor. For instance, lying supine may not provide a clear view of the clavicle in the desired projection, while seated positions might not adequately position the clavicle or the surrounding anatomy. Crossing the arms can also lead to increased overlap of structures or obscure the