![]() For non-trauma cases, position the patient in a lateral position, either seated or standing, with the patient's shoulder against a vertical cassette holder.Positioning for a lateral projection of the cervical spine Minimum SID of 60 inches-72 inches (150-180 cm).Image receptor (IR): 8 x 10 inch (18 x 24 cm).It is of the utmost importance on the lateral projection of the cervical spine that the C-7 vertebra be visualized, as this is the most commonly overlooked site of injury. The lateral view can also be obtained in flexion and extension of the neck, which is particularly effective in demonstrating suspected instability at C-1 to C-2 by allowing evaluation of the atlanto-odontoid distance. The bodies and spinous processes of C-2 to C-7 are fully visualized, and the intervertebral disk spaces and prevertebral soft tissues can be adequately evaluated. This projection suffices to demonstrate most traumatic conditions of the cervical spine, including injuries involving the anterior and posterior arches of C-l the odontoid process, which is seen in profile and the anterior atlantal-dens interval. ![]() The single most valuable projection in these instances is the lateral view, which may be obtained in the standard fashion or with the patient supine, depending on their condition. Frequently the patient is unconscious, there are associated injuries, and unnecessary movement risks damage to the cervical cord. Radiographic examination of a patient with cervical spine trauma may be difficult and is usually limited to one or two projections. ![]()
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