Which projection is used to project the dens within the shadow of the foramen magnum?

The Fuchs method is specifically designed to project the dens, or odontoid process, within the shadow of the foramen magnum. This method is used when the patient is unable to perform a traditional open mouth projection, allowing for a view of the dens without superimposition of the upper cervical spine. In the Fuchs method, the patient's chin is raised to align the occlusal plane perpendicular to the IR (image receptor), which directs the central ray at a specific angle directed toward the mentum, facilitating a clear visualization of the dens above the foramen magnum.

This projection is particularly important for evaluating fractures or pathologies involving the dens and the surrounding structures, as it provides a unique perspective that minimizes overlap and enhances diagnostic clarity. The use of this method emphasizes the alignment and positioning required to achieve an optimal view of this critical anatomical region.