NBCE Exam 2026 – 400 Free Practice Questions to Pass the National Board of Chiropractic Examiners

Tube angulation is crucial for obtaining an accurate AP lower cervical radiograph primarily to allow for the proper visualization of the intervertebral disc spaces. When the x-ray tube is angled appropriately, it aligns the beam in a way that structures in the cervical spine, such as the disc spaces, become more prominent and are better defined on the radiographic image. This is particularly important in the cervical region, where anatomical structures can overlap and obscure important details, which could hinder diagnosis and assessment.

In addition to enhancing the visibility of the disc spaces, tube angulation helps to reduce the superimposition of adjacent vertebral bodies, which further aids in clearer interpretation of the cervical spine's anatomy and any pathological conditions present. Although factors like patient exposure and movement are essential considerations in radiography, the primary reason for angling the tube in this specific view is to improve the visualization of the intervertebral disc spaces.