![]() ![]() The intervertebral disc spaces are seen open (see notes below).Correct central ray angulation is evidenced by.The superimposition of the mandible over the base of the skull (see notes below).Correct alignment of the occlusal plane and the base of skull is evidenced by.The mandibular angles are equidistant from the cervical spine.The pedicles are equidistant from the vertebral body edges (see notes below).The spinous processes are seen in the midline of the vertebral bodies (see notes below).Position the interpupillary line so that it is parallel to the IR.Position the IR patient so that it is either in the table bucky, or is on the barouche posterior to the cervical spine.Raise the chin slighlty, so that the line of the occlusal plane superimposes the base of the skull.Position the interpupillary line so that it is parallel to the IR (in an erect patient, this will also be parallel to the floor).Position the midsagittal plane so that it is perpendicular to the IR.(This allows the patient to rest their back against the bucky, and may help to minimise patient movement) ![]() Using the upright bucky, position the patient in an AP position.Take care to ensure no rotation of either the head, neck or torso.Only request the patient move into position if the possibility of spinal injury has been ruled out.Ensure the removal of artefacts that may superimpose the anatomy of interest.Gonadal (check your department's policy guidelines) Shutter B: Open to include the soft tissue of the neck laterally The light will appear to bend around due to the central ray being angled cephalad Shutter A: Open so that the light of the collimated field just includes the top of the ear. (to match the lordotic curve of the cervical spine, to penetrate the intervertebral disc spaces)Ĭentre: C4, collimate to the 18 x 24cm film size (CR and DR as recommended by manufacturer)ĭirected to the level of C4, which is approximately the level of the angle of the mandibleġ5 degrees cephalad. Some pathologies of the cervical vertebrae C3 through to C7 The cervical vertebrae from C3 down to approximately T2 ![]()
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