Clover Learning Radiography Positioning for the Spine Practice Test 2026 – The All-in-One Guide to Mastering Your Exam!

The main idea is to position the beam to separate the coccyx from the pelvic bones so it can be seen cleanly. For an AP axial coccyx projection, a small caudad angle of about 10 degrees tilts the beam toward the feet, which moves the coccyx into a better profile and reduces superimposition by the pubic symphysis and pelvic structures. This angulation provides a clear, less distorted view of the coccyx. Angles in other directions or no angle at all tend to worsen overlap or misalign the coccyx, making the image harder to interpret. In practice, the patient is supine, center the CR to the coccyx with the ray angled 10 degrees toward the feet, entering about 2 inches inferior to the ASIS along the midline.