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Ch 9 Workbook C

Cervical and Thoracic Spine

QuestionAnswer
A radiograph of an AP "open mouth" projection of the C-spine reveals that the base of the skull is superimposed over the upper odontoid process. Whats the positioning error? Excessive extention of the skull
An AP axial projection of the c-spine requires what angulation? 15 degree cephalad angle
What is the SID for the c-spine? 60"-72"
What is the name of the AP "wagging jaw" of the c-spine? Ottonello method
The Ottonello method requires a short exposure time. (True/False) False. purpose is the blur the mandible.
What does the breathing technique do on the Lateral T-spine? blurs out unwanted rib and lung markings.
What is the Anode Heel Effect? creates a uniform density throughout T-spine. Cathode side is over abdominal end of patient
Why do you flex the patients knees and hips for an AP T-spine? to reduce thoracic curvature
What does the wedge compensating filter do on an AP T-spine? obtains uniform brightness/density. Thicker part of filter is over the upper vertebra of patient.
What do you do on a Lateral T-spine if the patient has broad shoulders? angle the CR 3-5 degrees cephalic
On a trauma C-spine, what projection should you do first? left horizontal lateral
What pathology may be visualized with a left horizontal lateral projection for a trauma patient? clay shoveler's, compression, hangman's, odontoid, and teardrop burst fractures.
What is subluxation? partial dislocation
What projections would best demonstrate a whiplash injury? hyperextension and hyperflexion lateral positions
The lateral hyperflexion and hyperextension of the c-spine are performed to rule out whiplash and what else? follow up after spinal fusion surgery
What's viewed on a c-spine hyperflextion? spinous processes should be well seperated
What's viewed on a c-spine hyperextension? spinous processes should be close in proximity.
What other projections can be taken to view the odontoid process/dens besides the AP open mouth? AP Fuchs; PA Judd
If technologist cannot obtain C7-T1 on the lateral c-spine, what other projection can be taken? Cervicothoracic (Swimmers)
Whats another name for the Cervicothoracic (Swimmers) projection? Twining Method
To help seperate the shoulders on the Cervicothoracic (Swimmers) projection, what should the technologist do? slight caudad angle of 3-5 degrees
What projection can be taken to demonstrate the lateral masses of C4? AP Axial vertebral arch (pillars)
What are the structures shown on the AP axial vertebral arch(pillars) projection? posterior elements of mid and distal cervical and proximal thoracic vertebrae. C4-C7
What specific projection is taken for a Jefferson fracture? (besides a CT scan) AP open mouth
What procedure is performed if a patient has a history of Scheuermann disease? scoliosis series
Created by: Tracie Schroeder Tracie Schroeder on 2010-02-13



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