LRA 224 Final Review Exam Questions
and Answers5
The gonion corresponds to the vertebral level of - ANSWERS-C3
Why is the chin extended for a lateral projection of the cervical spine? - ANSWERS-to prevent
superimposition of the mandible on the spine
A radiograph of a left posterior oblique (LPO) projection of the lumbar spine reveals that the
downside pedicle is projected too far posterior on the vertebral body. What specific positioning
error is present on this radiograph? - ANSWERS-Excessive rotation of the spine
Which of the following structures is located at the level of ASIS - ANSWERS-S1-S2
The anterior oblique ( RAO/LAO) positions of the lumbar spine will demonstrate the
zygapophyseal joints closest to the image receptor. T/F - ANSWERS-False
If the waist is supported properly, an average-size patient does not require any CR angulation for
the lateral lumbar spine projection. T/F - ANSWERS-True
An abnormal lateral curvature of the spine is a congenital condition, termed - ANSWERS-
scoliosis
A patient comes to radiology for a follow up study of the lumbar spine. The patient had a spinal
fusion performed at the L3 through L4 level four months earlier. Which of the following would
best demonstrate the degree of movement at the fusion site. - ANSWERS-Lateral
flexion/extension
, Scoliosis is defined as an abnormal or exaggerated ______ curvature - ANSWERS-Lateral
What is another term for the sacral horns? - ANSWERS-cornu of the sacrum
The zygapophyseal joints of the upper lumbar vertebrae are ___ in relationship to the
midsagittal plane. - ANSWERS-50 degrees
Which of the following is not a correct evaluation criterion for the AP axial C spine projection? -
ANSWERS-All of the above are correct criteria.
On average, how many separate bones make up the adult vertebral column - ANSWERS-26
A key advantage of posterianterior (PA) projection taken during a pediatric scoliosis study as
compared with the AP projection is that a reduces - ANSWERS-It reduces breast and thyroid
dose by 90%
What CR angle should be used for a lateral sacrum/coccyx projection - ANSWERS-None. CR is
perpendicular to the image receptor.
A radiograph of an AP open mouth projection reveals that the base of the school is super
imposed over the dens. What positioning error led to this radiographic outcome? - ANSWERS-
Excessive extension of the skull
A radiograph of a lateral thoracic spine reveals that there is excessive density along the
posterior aspect of the spine. Even with good collimation the scatter radiation breaching the
image receptor obscures the spine Iest process. What can the technologist do to improve the
visibility of the posterior elements of the spine. - ANSWERS-Place a lead mat just posterior to
the patient
and Answers5
The gonion corresponds to the vertebral level of - ANSWERS-C3
Why is the chin extended for a lateral projection of the cervical spine? - ANSWERS-to prevent
superimposition of the mandible on the spine
A radiograph of a left posterior oblique (LPO) projection of the lumbar spine reveals that the
downside pedicle is projected too far posterior on the vertebral body. What specific positioning
error is present on this radiograph? - ANSWERS-Excessive rotation of the spine
Which of the following structures is located at the level of ASIS - ANSWERS-S1-S2
The anterior oblique ( RAO/LAO) positions of the lumbar spine will demonstrate the
zygapophyseal joints closest to the image receptor. T/F - ANSWERS-False
If the waist is supported properly, an average-size patient does not require any CR angulation for
the lateral lumbar spine projection. T/F - ANSWERS-True
An abnormal lateral curvature of the spine is a congenital condition, termed - ANSWERS-
scoliosis
A patient comes to radiology for a follow up study of the lumbar spine. The patient had a spinal
fusion performed at the L3 through L4 level four months earlier. Which of the following would
best demonstrate the degree of movement at the fusion site. - ANSWERS-Lateral
flexion/extension
, Scoliosis is defined as an abnormal or exaggerated ______ curvature - ANSWERS-Lateral
What is another term for the sacral horns? - ANSWERS-cornu of the sacrum
The zygapophyseal joints of the upper lumbar vertebrae are ___ in relationship to the
midsagittal plane. - ANSWERS-50 degrees
Which of the following is not a correct evaluation criterion for the AP axial C spine projection? -
ANSWERS-All of the above are correct criteria.
On average, how many separate bones make up the adult vertebral column - ANSWERS-26
A key advantage of posterianterior (PA) projection taken during a pediatric scoliosis study as
compared with the AP projection is that a reduces - ANSWERS-It reduces breast and thyroid
dose by 90%
What CR angle should be used for a lateral sacrum/coccyx projection - ANSWERS-None. CR is
perpendicular to the image receptor.
A radiograph of an AP open mouth projection reveals that the base of the school is super
imposed over the dens. What positioning error led to this radiographic outcome? - ANSWERS-
Excessive extension of the skull
A radiograph of a lateral thoracic spine reveals that there is excessive density along the
posterior aspect of the spine. Even with good collimation the scatter radiation breaching the
image receptor obscures the spine Iest process. What can the technologist do to improve the
visibility of the posterior elements of the spine. - ANSWERS-Place a lead mat just posterior to
the patient
