Cervical spine oblique x ray positioning3/30/2024 ![]() ![]() The patient should be turned to the other side for the other oblique view and the process repeated. The patient should be asked to stop breathing when the exposure is taken. The patient should be positioned so that he or she is at a 45-degree angle to the cassette holder. Position of part Remove necklaces, hair grips, and anything else from the hair. Purpose and Structures Shown An additional view of the cervical spine. Video Credit : CentralazRAD Cervical Spine Oblique In uninjured patients, a 1 kg (2 lb) weight should be placed in each hand. The arms should be by the sides and the shoulders should be as low as possible. The patient should be positioned with the shoulder against the cassette holder. The knob at the back of the head should be at the same level as the lower jaw (chin). The patient should be asked to place the chin against the cassette holder. Purpose and Structures Shown A basic view of the cervical spine. The density should be appropriate with soft tissues and bony structures well visualized. ![]() Radiologists consider a cervical spine X-ray to be of good quality when the lateral view shows all 7 cervical vertebrae plus the C7-T1 junction. Cervicothoracic Region Lateral Twinning Method.the pedicles are more obscured and are see closer to how they are seen in an AP position, that is, they are positioned equidistant from the vertebral body edges.This article discusses radiographic positioning of the cervical spine for the Radiologic Technologist (X-Ray Tech).the pedicles will be seen in the posterior vertebral body.the zygopophyseal joints will be visible.The pedicles are seen in the anterior half of the vertebral body The locaton of pedicles with correct positioning RPO shows the LEFT intervertebral foramen LAO shows the LEFT intervertebral foramen LPO shows the RIGHT intervertebral foramen RAO shows the RIGHT intervertebral foramen demonstrate the intervertebral foramina furthest from the IR.the intervertebral foramina that are demonstrated are those closest to the IR, so therefore, are sharper and less magnified.less radiation dose to the thyroid than Posterior Obliques.Soft tissues such as an air filled trachea are visualisedĪnterior Obliques are generally preferred as,.Bony trabecular patterns and cortical outlines are sharply defined.Shutter B: Open to show the soft tissue of the neck anteriorly.Shutter A: Open to show the EAMs superioly and the T1 inferiorly.Also the anterior soft tissue of the neck and airway are seen. All of the cervical vertebrae are shown, including the intervertebral foramina, as well as T1.The intervertebral disc spaces are seen open.Correct central ray angulation is evidenced by.No superimposition of the mandible over the cervical vertebrae.Correct positioning of the patient's chin is evidenced by.The pedicles are seen in the anterior half of the vertebral body (see notes below).The intervertebral foramen are open, tear drop shaped and increase in size from C2 down to C7.Correct obliquity (45 degree rotation of the cervical spine) is evidenced by.Angle the patient so that their back and neck make a 45 degree angle with the bucky.Position the patient in an AP position against the upright bucky.Ensure the chin is up slightly to avoid superimposition over the cervical spine.Angle the patient so that their chest and neck make a 45 degree angle with the bucky.Position the patient against the upright bucky in a PA position.Note that the patient should not be moved or asked to move into position in the case of trauma until the possibility of spinal injury has been ruled out. Gonadal (check your department's policy guidelines) Shutter B: Open to include the soft tissue of the neck laterally Shutter A: Open so that the light of the collimated field just includes the top of the ear. Posterior Obliques - 15 degrees cephalad (up)Ĭentre: C4, collimate to the 18 x 24cm film size This larger distance helps overcome the OID (object to image receptor distance) to reduce magnification and improve the sharpness of the image.Īnterior Obliques - 15 degrees caudad (down) (CR and DR as recommended by manufacturer) Vertebrae of the cervical spine, C1 through to C7, as well as the thoracic vertebra T1, the soft tissues of the neck No superimposition of the mandible over the cervical vertebraeRadiographic Positioning ![]()
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