ARRT Spine and Pelvis Procedures 5

Question 1

The Stener-Laurin axial projection is used to evaluate which spinal region?

Accepted Answer

Lumbosacral junction (L5-S1)

Answer

The axial (angled AP) projection of the lumbosacral junction projects the L5-S1 intervertebral disc space open to evaluate the joint.

Question 2

In the lateral decubitus position for a cervical spine trauma series, what is the purpose of applying gentle traction to the patient's arms?

Accepted Answer

To depress the shoulders and visualize C7

Answer

Gentle downward traction on the arms depresses the shoulders inferiorly, allowing visualization of the C7 vertebra on the lateral cervical projection.

Question 3

Flexion and extension lateral projections of the cervical spine are primarily used to evaluate:

Accepted Answer

Ligamentous stability and atlantoaxial instability

Answer

Flexion and extension lateral projections stress the cervical ligaments and reveal instability or hypermobility that is not apparent on neutral lateral views.

Question 4

On a well-positioned AP thoracic spine radiograph, which structure should be demonstrated in the center of each vertebral body?

Accepted Answer

Spinous process

Answer

The spinous processes should project through the center of each vertebral body on a true AP thoracic spine, confirming no patient rotation.

Question 5

Which oblique body position places the LEFT zygapophyseal joints of the lumbar spine closest to the IR?

Accepted Answer

Left posterior oblique (LPO)

Answer

In the LPO position, the left side is closest to the IR, demonstrating the LEFT zygapophyseal joints of the lumbar spine.

ARRT - American Registry of Radiologic Technologists Practice Test

ARRT - American Registry of Radiologic Technologists Practice Test

ARRT Spine and Pelvis Procedures 5