If the base of skull is superimposed over the upper aspect of the dens, the head needs to be hyperflexed or in the case of trauma, the central ray should be angled caudally. Cervical spine X-rays are done with the person lying down. Cervical spine is more commonly affected than dorsal or lumbar spine. An X-ray technician will take pictures of the spine: from the front (AP or anterior-posterior view) from the side (lateral view) from the front through an open mouth (odontoid view) Occasionally, other pictures (like flexion and extension views) also might be done. Chordoma occurs in the sacrococcygeal region (50), sphenooccipital region (35), and vertebrae (15). If teeth are superimposed over the upper aspect of the dens, the head needs to be hyperextended or in the case of trauma, the central ray should be angled cephalic. Chordoma is the second most common tumor of the spine it occurs mostly in 56 th decade with a male predominance. Positional errors Teeth superimposing the dens make sure that any removable artifacts such as earrings, glasses or metal dentures are removed to avoid obscuring the anatomy of interest.the zygapophyseal joint space between C1 and C2 is symmetrical.the dens is free from superimposition of the adjacent atlas lateral masses or other tissues 2.superior-inferior to include the upper incisors and lower incisors.angle accordingly see 'patient positioning'.the central ray is centered at the center of the open mouth.Do a Swimmers Lateral if necessary to visualize C7 T1. Routine: 3-4 views LATERAL Upright - include sella to C7-T1. do not move the head in trauma, angle the central accordingly Note: For initial evaluation after trauma, routine 3 view (AP/Lateral/Odontoid) is recommended unless requested by a spine surgeon.the head should be positioned so the lower margin of the upper incisors and the base of the skull are perpendicular to the image receptor.The lateral radiograph is the single most. at the last instant, the patient is instructed to open their mouth as wide as possible There is diversity of opinion regarding the initial imaging of a patient suspected of having a cervical spine injury.patient’s shoulders should be at equal distances from the image receptor to avoid rotation, the head facing straight forward.patient positioned erect in AP position unless trauma the patient will be supine. This view focuses primarily on the odontoid process of C2, and is useful in visualizing odontoid and Jefferson fractures.
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