What should be open and well seen on an oblique projection of the cervical spine?

- See: Pillar View

Inhaltsverzeichnis Show

C-Spine positioning
What does an oblique C spine show?
What anatomy is demonstrated on the AP oblique projections of the cervical spine?
What is the CR angle for the oblique cervical spine projections?
Which foramina are demonstrated with the left anterior oblique position of the cervical spine?

- Discussion:
- demonstrates primarily neural foramina, pedicles, articular masses, apophyseal joints, & relative relationship at lamina;
- oblique views show the pedicle in profile, and also allows assesment of the intervertebral foramina (and osteophytes encroaching
along their margins);

- Technique:
- routine oblique views require rotating the patient's head and body;
- may be obtained in AP or PA projections:
- erect position is more comfortable;
- entire position is rotated 45 deg to one side to avoid rotational differences among different vertebral segments;
- central beam directed to C4 vertebra with 15-20 deg cephalic tilt;

- Trauma Oblique:
- this view shows the pedicles and articualr processes well;
- oblique views often are superior to any other view, including MRI or CT scans, for visualizing articular process frx & subluxations;
- in difficult question of facet subluxation, flexed oblique views also can be obtained;
- uncinate processes, pedicles, laminae, & inferior & superior articular facets are well seen using this technique;
- C7-T1 relationship, which is frequently obscured on lateral film, may be seen on the oblique and obviate need for a swimmer's view;

- Technique Trauma Oblique:
- trauma oblique series can be obtained without moving the head but by angling the tube 30-40 deg from the horizontal;
- trauma oblique is obtained w/ x-ray beam 45 deg off vertical, patient supine, & ungridded cassette horizontal & located
towards opposite side of the patient;
- this view shows pedicles & articular process well, although appearance of spine is slightly spread out;
- major benefit of oblique view is that patient can remain supine;
- no rotation of the torso or head is required;
- furthermore, oblique views often are superior to any other technique, including CT or MRI scans, for visualizing articular process
fractures and subluxations;
- in difficult questions of facet subluxations, flexed oblique views also can be obtained

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C-Spine positioning

Question	Answer
name given to the C7	vertebra prominens
openings in the cervical vertebrae for the transmission of the vertebral artery and vein	transverse foramen
Where should the center of the IR be positioned for the open mouth AP projection of the atlas and axis?	C2
Which line must be perpendicular to the IR for the AP open mouth atlas and axis	Line drawn from the lower edge of the upper incisors to the tip of the mastoid process
For which projection is the patient instructed to softly phonate ah during the exposure?	AP open mouth atlas and axis
Where is the CR directed for an open mouth AP projection of the atlas and axis?	center of the IR perpendicular thru the open mouth
When the OID long, scattered radiation that would expose the film at a short OID is scattered away from the film. Because much of the scattered radiation is not being directed toward the film, a grid is not needed to absorb the scatter	air gap technique
For which projection is the patient instructed to softly phonate ah during the exposure?	AP open mouth atlas and axis
Which of the following methods is used to demonstrate the dens within the foramen magnum?	fuchs method
Where is the center of the IR positioned for the AP projection of the dens, Fuchs method?	tip of the mastoid process
What is the CR angulation for the AP projection of the dens, Fuchs method?	perpendicular to the IR, zero degrees
Where is the IR centered for an AP axial cervical spine?	C4
The CR angle for an AP axial cervical vertebrae	15-20 cephalad
Where is the CR directed for a lateral cervical spine?	C4
true or false: When cervical vertebral radiographs are taken on a trauma patient in whom subluxation or fracture is suspected, it is important that the c collar is removed or adjusted to obtain a good radiograph.	false
The SID for a lateral c spine must be a minimum of how many inches?	60-70
The respiration phase for a lateral c spine is?	suspension after expiration
Grandy method is?	lateral C-spine
Where is the CR centered for a hyperflexion or hyperextension lateral c spine?	C4
The phase of respiration for a hyperflexion or hyperextension lateral c spine is?	suspended respiration
How much is the body rotated for AP axial oblique projection of the cervical intervertebral foramina?	45 degrees
The swimmers lateral projection is performed to demonstrate the?	cervicalthoracic region
The twining method demonstrates the Cervicothoracic region in which projection?	lateral swimmers
What is the CR angulation for an AP axial projection of the cervical spine on a trauma patient?	15-20 cephalad
Flexion and extension views of the cervical vertebrae are performed to show?	degree of moblity
The thyroid cartilage generally corresponds to the level of?	C4-C6
true or false: If the patient’s head and upper cervical column are tilted toward or away from the film, the upper cervical column is no longer aligned parallel with the film.	true
Where is the CR directed for the lateral projection of the cervicothoracic region twining method?	C7-T1
True or False: If the patients chin was not adequately elevated, the mandibular rami superimpose the bodies of c1 and c2	true
What is the CR angle for the pa axial oblique projection of the cervical intervertebral foramina?	15-20 degrees caudad
Which intervertebral foramina are demonstrated on the pa axial oblique projection of the cervical spine?	foramen and pedicle closest to the IR
The respiration phase for an AP or pa axial oblique projection of the c spine is:	suspended respiration
Patients may arrive in the emergency room with trauma to the neck. Which projection of the c spine is performed first, and then reviewed by a physician, before proceeding with other projections?	cross table lateral to check for fx
The recommended SID for a dorsal decubitus cross table lateral projection of the c spine on a trauma patient is:	60-72 inches
What is the CR angulation for an AP axial projection of the c spine on a trauma patient?	15-20 degrees cephalad
Which CR angulation would be used to demonstrate the c spine pillars and laminae for an AP axial projection on a trauma patient?	20-30 degrees caudad
Which of the following methods is used to demonstrate the Cervicothoracic region in the lateral projection?	twining, grandy, pawlow, twining and pawlow
The twining method demonstrates the cervicothoracic region in which projection?	lateral
The swimmers lateral projection is performed to demonstrate the:	cervicothoracic regiion
What is the CR angulation for the lat projection of the cervicothoracic region twining method when the shoulder can be depressed?	zero
Where is the CR directed for the lateral projection of the cervicothoracic region twining method?	C7-T1
The Pawlow method demonstrates the cervicothoracic region in which projection?	lateral
The CR angulation for the lateral projection of the cervicothoracic region Pawlow method is:	3-5 degrees caudad
Flexion and extension views of the c spine are performed in the __ position?	lateral
The thyroid cartilage corresponds to level of	C4-C6
Along with the lower edge of the upper incisors, what other bony landmark must be aligned for the AP open mouth projection?	tip of mastiod
Why is the chin extended for lateral projection of the c spine?	to prevent superimopsition of the C1-C2
If the patients chin was not adequately elevated, the mandibular rami will superimpose the bodies of?	C1 and C2
The AP axial oblique projection of the cervical spine include the following in what position	RPO, LPO
The pa axial oblique projection of the cervical spine include the following:	RAO, LAO
The position used to demonstrate the absence of normal movement from trauma or disease is:	lateral hyperflexion and extension
On the lateral c spine projection both the CR and IR are centered at the level of __	C4

What does an oblique C spine show?

The oblique view shows the intervertebral foramina formed by the inferior notch of the pedicle of the vertebrae above and the superior notch of the pedicle of the vertebrae below. Oblique cervical spine views can be performed erect or supine and AP or PA.

What anatomy is demonstrated on the AP oblique projections of the cervical spine?

XR 105 Midterm.

What is the CR angle for the oblique cervical spine projections?

D: 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.

Which foramina are demonstrated with the left anterior oblique position of the cervical spine?

Which foramina are demonstrated witha a left anterior oblique (LAO) position of the cervical spine? The left intervertebral foramina or downside.

What should be open and well seen on an oblique projection of the cervical spine?

C-Spine positioning

What does an oblique C spine show?

What anatomy is demonstrated on the AP oblique projections of the cervical spine?

What is the CR angle for the oblique cervical spine projections?

Which foramina are demonstrated with the left anterior oblique position of the cervical spine?

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