Chapter 9
Chapter 9
Situations
Label/Name Anatomy & Situations
Label/Name Anatomy
100
Percentage of breast dose that is decreased when performing a PA rather than an AP scoliosis study?
90%
100
Another term for the sacral horns.
Cornu of the sacrum
100
A PA axial oblique projection (Teufel method) is performed on a patient. The resultant radiograph demonstrates distortion of the acetabulum. The following positioning factors were used: 40-degree anterior oblique, 12-degree cephalad CR angle, and CR centered to the upside hip (acetabulum). What needs to be modified during the repeat exposure?
Center CR to downside hip (acetabulum).
100
The anatony labeled A on the Scottie dog.
Transverse process
200
This position/projection will demonstrate L5-S1 zygapophyseal joint space.
Right and left 30 degree oblique projections
200
The intervertebral foramina of the Lspine are located at an angle of ____ in relation to the midsagittal plane.
90 degrees
200
A nontrauma patient comes to radiology with a history of chronic pain of the right hip. The patient is ambulatory but has not had previous radiographs taken of that hip. Which of the following routines would be best suited for this patient?
AP pelvis and axiolateral frog-leg (modified Cleaves) projections of the right hip
200
Which aspect of the Scottie dog is the superior articular process?
E
300
CR angulation that is required for an AP axial projection of the coccyx.
10 degree caudad
300
The CR is centered here for posterior oblique projections of the SI joints.
1 inch medial to upside ASIS
300
A patient comes to the radiology department for a cervical spine routine. The study is ordered for nontraumatic reasons. The AP open mouth projection reveals that the base of the skull and upper incisors are superimposed, but they are obscuring the upper portion of the dens. On the repeat exposure, what should the technologist do to demonstrate the upper portion of the dens?
Perform the Fuchs or Judd method.
300
Your team will receive 3 bonus points!
400
Joint classification of the zygapophyseal joints?
synovial/diarthrodial
400
CR angle for a lateral sacrum/coccyx projection.
None. CR is perpendicular to the IR.
400
A patient enters the ED with a cervical spine injury as a result of a fall. The initial horizontal beam lateral projection reveals no subluxation or fracture. The ED physician is concerned about a whiplash injury. Which of the following routines would be most helpful in diagnosing this type of injury?
Patient in hyperflexion and hyperextension lateral positions
400
The anatomy labeled C.
Pars interarticularis
500
This structure of the sacrum is considered to be the most posterior.
Median sacral crest
500
A fracture through the vertebral body and posterior elements caused by lap seat belts during an auto accident involving sudden deceleration.
Chance fracture
500
A radiograph of an AP axial coccyx reveals that the symphysis pubis is superimposed over the distal end of the coccyx. Which of the following modifications will correct this problem during the repeat exposure?
Increase the CR angulation.
500
The anatomy labeled D on the Scottie dog.
Inferior articular process