Conclusion: X-ray barium meal signs and CT examination has each superiority. It's important to guide clinical therapy and judge prognostic using both of them.
Methods 51 cases of large airway stenosis were treated with the self-expanding NiTi alloy stents through oral cavity (16cases) or nasal cavity (35 cases) under the guide of X-ray.
Objective: To evaluate the accuracy of cervical pedicle screw pilot holes placement by bilateral oblique X-ray films with the spiral wires as the guide pin.