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Citation, DOI & article dataCitation: Nguyen, M., Murphy, A. Cervical spine (AP oblique view). Reference article, Radiopaedia.org. (accessed on 08 Sep 2022) https://doi.org/10.53347/rID-51497 The AP oblique cervical spine projections are supplementary views to the standard AP, odontoid and lateral images in the cervical spine series and are always done bilaterally for comparison purposes. However, the PA oblique projection is preferred as it reduces radiation dose to the thyroid 1 compared to the AP oblique projection. On this page:This projection can be used to visualize pathology involving the adjacent soft tissue structures or cervical spine, especially stenosis of the intervertebral foramina. Note: Such views should not be performed on trauma patients without the strict instructions of a qualified clinician who has reviewed the lateral cervical spine image or CT of the cervical spine. Moving the patient's head or neck, or removing a cervical collar could be detrimental.
To demonstrate the intervertebral foramen of the c-spine open, it is necessary to achieve adequate rotation of the vertebral column, usually at 45°. If underrotated, the foramina will be narrowed and a sternoclavicular joint would be superimposed over the vertebral column 3. Over rotation of more than 45° would cause one pedicle to be foreshortened while the other pedicle aligns to the midline of the vertebral bodies 2. ReferencesRelated articles: Imaging in practicePromoted articles (advertising)What is the CR angle for the oblique cervical spine projections?For the oblique view of the cervical spine, the patient may be erect or recumbent. The patient is rotated 45° to the left, to demonstrate the right-side neural foramina. The CR is directed to the C-4 vertebra with 15°-20° cephalad angulation.
What are the CR angle and direction for the AP axial projection of the coccyx?XR 105 Midterm. What is AP oblique projection?The AP oblique cervical spine projections are supplementary views to the standard AP, odontoid and lateral images in the cervical spine series and are always done bilaterally for comparison purposes.
How many degrees and in which direction should the C arm be tilted for the PA projection of the C spine during an Acdf procedure?This angle can and will vary between 5-20° depending on the position of the head.
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