SPINE Flashcards
What is the name of the soft, inner layer of the intervertebral disks?
Nucleus pulposus
The toothlike projection from the superior surface of the body of the axis is called the
Dens or odontoid process
What is the proper CR angle and direction for the AP oblique projection of the cervical spine?
15 degrees cephalad
If the base of the skull is superimposing the dens in the open mouth technique, what positioning error has occurred?
The patients neck was extended too much
The patient is positioned with the coronal plane of the body perpendicular to the IR, the MSP is parallel to the IR, and the arm closest to the IR is raised over the head. The CR is perpendicular and centered to C7-T1 interspace. What anatomy and projection are demonstrated on this image?
A lateral projection of the cervicothoracic spine
Which of the following must be done to demonstrate the cervical intervertebral foramina in the patients right side?
CR 15 degrees caudad,patient in the RAO
The RAO position of the cervical vertebrae demonstrates which side of the patients intervertebral foramina
Right
What is the proper patient position for an AP oblique projection of the cervical spine?
45 degrees posterior oblique position
Which vertebrae is known as the axis?
C2
The vertebral arch is formed by the
Pedicles and laminae
What is one of the unique anatomic characteristics of the cervical vertebrae
Cervical vertebrae have a transverse foramen on each side of the body
Where should the CR enter the patient for a lateral projection of the cervicothoracic spine?
Perpendicular through C7-T1 interspace
What anatomic structures of the cervical spine are best demonstrated by the lateral projection?
Zygapophyseal joints
Which vertebrae should be included in the lateral projection of the cervicothoracic spine?
C6-T3
Which of the following body positions demonstrates the left zygapophyseal joints of the lumbar spine?
45 degrees LPO
Which sacroiliac joint is demonstrated when the patient is positioned in a 25-30 degree RAO position?
The right sacroiliac joint is demonstrated
What specific anatomy is demonstrated on the AP oblique projection of the lumbar spine if the patient is positioned in a 45 degree RPO
Right zygapophyseal joints
The articular surfaces of the articular processes of the vertebrae are called
Facets
What is the CR angle and direction for the AP Axial projection of the sacrum
15 degrees cephalad
Which SI joint is demonstrated when the patient is positioned in a 25-30 degree RPO position
The left sacroiliac joint is demonstrated
An abnormal lateral curvature of the spine is called
Scoliosis
On which projection of the spine is the Scottie dog configuration demonstrated
Oblique projection of the lumbar spine
When using a 35x43cm IR, where should the CR enter the patient for an AP projection of the lumbar spine?
At the level of the iliac crest in the midline of the patient
Where does the CR enter the patient for an AP projection of the lumbar spine?
At the level of the iliac crest, centered to the MSP
What is the rationale for using a 72in SID for the lateral projection of the cervical spine?
This SID helps to overcome the magnification caused by the increased OID of the position
Where does the CR enter the patient for the AP projection of the thoracic spine?
Perpendicular to T7
Which portion of the Scottie dog represents the pars interarticularis
Neck
Which pathology term applies to the anterior displacement of one vertebrae on another
Spondylolisthesis
What specific spine anatomy is demonstrated on a lateral projection of the lumbar spine?
Intervertebral foramina
What is the odontoid process and where is it located?
A toothlike projection on the superior surface of C2
When taking an AP axial projection of the cervical spine, the CR is directed
15 degrees cephalad
