Open Mouth Views


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Open mouth and adjust patient head, a line from lower margin of upper incisors to the base of the skull or mastoid tip is perpendicular to the image receptor and x-ray table or align Central Ray accordingly.

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Sometimes your mouth will get stuck open when you suck a little too much.

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The 3 standard views are – Lateral view – Anterior-Posterior (AP) view – and the Odontoid Peg view (or Open Mouth view). In the context of trauma these images are all difficult to acquire because the patient may be in pain, confused, unconscious, or unable to cooperate due to the immobilisation devices.

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The Fuchs view is an alternative way to image C1-C2 and the dens (odontoid process), instead of the much more common open mouth odontoid view. The standard Fuchs view (diagram 1) should not be used in a trauma patient since one does not want to

AP and Odontoid Views The complete radiographic examination includes AP and open-mouth views. If there are no obvious fractures or dislocations on the lateral view and the patient’s condition permits, then proceed with the AP and the open-mouth views.

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Being able to read and recognize common landmarks when interpreting an open mouth odontoid view is important in determining who has an unstable condition that may warrant more aggressive intervention.

AP "open-mouth" projection of the cervical spine. This variant of the AP projection, also known as the "open-mouth" view, may be obtained as part of the standard cervical spine examination. This view provides effective visualization of the structures of the first two cervical vertebrae.

The closed mouth odontoid AP view (Fuchs view) is a nonangled AP radiograph of C1 and C2. This view focuses primarily on the odontoid process. The standard Fuchs view should not be used in a trauma setting and the modified Fuchs view may be used instead.

To obtain the dynamic close-mouth view, similar to that of the dynamic open-mouth view, we asked the patient to bend his neck to the right and left as much as possible, keeping the center of the mouth facing forward . The radiograph was taken with 83 kV,·160 mA,·80 ms.

An open mouth view x-ray is a special view to visualize upper cervical spine problems especially C1 and C2 vertebrae. Routine anteroposterior cervical spine view shows the spine from C3 segment and is usually less helpful in diagnosing acute injuries.

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