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Vertebral Column
Ch. 8
Question | Answer |
---|---|
What are two indications that a radiographer should not perform a fuchs projection? | 1. degenerative disease 2. fracture |
What structure is projected through the dens in the fuchs method? | foramen magnum |
In the fuchs method, the tip of the chin and the mastoid tips should be _______. | vertical |
Where does the CR enter for a fuchs method? | enters the neck on the midsagittal plane just distal to the tip of the chin |
What two structures are used to position for the AP (open mouth). | 1. mastoid 2. lower edge of upper incisors |
What breathing instructions should be given to the patient when performing an open mouth projection? | instruct the patient to say "AH" |
When performing a lateral projection of the C-spine what is the recommended SID? | 72" |
When performing a lateral projection of the C-spine, where should the CR enter? | perpendicular to C4 |
What body part rest on the grid when performing a lateral C-spine? | Adjacent shoulders |
The lateral C-spine is also known as the _________ method. | grandy |
Where is the top of the IR placed for a lateral C-spine? | 1" above External Acoustic Meatus (EAM) |
The respiration phase for a lateral C-spine is? | suspend respiration at the end of full expiration |
Where is the CR located for the C-spine in hyperflexion and hyperextension? | perpendicular to C4 |
The zygapophyseal joints of the C-spine are demonstrated on what projection? | Lateral projection (hyperflexion/hyperextension) |
What is the degree of angulations when performing an AP axial of C-spine? | 15-20 degrees |
Where does the CR enter for an AP axial projection of C-spine? | C4 |
How much should the head and body be rotated from the MSP when performing an AP axial oblique? | 45 degrees |
Which intervertebral foramina will be demonstrated closes or farthest when performing an AP axial projection? | farthest |
What is the tube angle when performing a AP axial oblique projection? | 15-20 degrees cephalad |
Which intervertebral closest or farthest will be demonstrated on a PA axial oblique? | closest |
Which projection requires the patient to perform an even chewing motion of the mandible during the exposure? | AP ottonello method |
Why does the patient "chew" during the ottonello method? | to blur out the mandible and to also show all seven C-spine vertebrae |
What is the technique called when performing a lateral projection of the cervicothoracic area? | swimmers |
Where is the CR directed to when performing a swimmers technique? | C7 and T1 |
How much should you angle the tube and in which direction if the patient is unable to depress the shoulder when performing a swimmers projection? | 3-5 degrees caudal |
Should you use a filter when performing a swimmers projection? | yes (extreme thicknesses between C-spine and T-spine) |
Where is the superior edge of the IR located when performing a AP T-spine? | 1.5 - 2" above shoulder |
Where is a good landmark to palpate when centering for a lateral T-spine? | inferior angle of scapula (T7) |
Which breathing technique is recommended for a lateral T-spine? | breathe normally or at end of expiration |
What are the two types of joints in the vertebral column: | zygopophyseal and intervertebral |
A lordotic curve is convex ______. A kyphotic curve is concave ______. | anteriorly/anteriorly |
Short thick processes that project posteriorly on each side of a vertebral body are called the ______. | pedicles |
______ are broad and flat and directed posteriorly and medially from the pedicles. | Lamina |
Three functions of the spinal column: | protects spinal cord, support for trunk/skull and attachment for deep muscles of back and ribs |
What are the two main parts on the typical vertebrae? | body and vertebral arch |
Primary curves are present at _____ and include: | birth; thoracic/pelvic |
Secondary curves develop after _____ and include: | birth; cervical/lumbar |
An abnormal lateral curvature of the spine is called: | scoliosis |
The openings in the cervical vertebrae for the transmission of the vertebral artery and vein are called the ________. | transverse foramen |
The lateral masses are part of which cervical vertebrae? | C1 |
In which view of the C-spine are the intervertebral foramina best demonstrated? | oblique |
The _____ are short and forked and are located on the cervical spine. | bifid |
What are the three unique vertebrae in the C-spine? | C1, C2 and C7 |