ARRT Registry Exam Review 2026–2027 – Comprehensive
Study Guide, Practice Test Questions & Answer
Explanations
Which anatomical structure should not be seen in its entirety on an anteroposterior (AP) pelvis
radiograph? - correct answers -Lesser Trochanters
What prior testing should be performed before a routine radiograph of the pelvis is started on a 25-
year-old female? - correct answers -Pregnancy Test
How many vertebrae are present in the cervical vertebrae? - correct answers -7
What is the correct central ray (CR) angle and direction for posteroanterior (PA) oblique projections of
the cervical spine? - correct answers -15 degrees caudal
At what level should the central ray be projected during the examination of an injured patient with a
dislocated L5-S1? - correct answers -1 1/2 inches inferior to the iliac crest
Which is true regarding the anatomy of the spinal cord? Select all that apply.
1. The spinal cord extends inferiorly from the brain.
2. The conus medullaris is situated at the level of S2.
3. The spinal cord terminates at the conus medullaris.
4. The bony vertebral column protects the spinal cord.
5. The subarachnoid space continues down the spinal cord to L1. - correct answers -1, 3, and 4
1
,In an oblique projection of the lumbar vertebrae, which structure forms the front legs of the "Scottie
dog"? - correct answers -Inferior articular process
Which joints are found between the articulation processes of the vertebral arches? - correct answers -
Which structures are most clearly demonstrated on an optimal 45-degree oblique cervical spine
radiograph? - correct answers -Intervertebral Foramina
Where does the central ray enter for a lateral projection of the lumbosacral spine? - correct answers -L4
Which modality involves fluoroscopy to examine the spinal canal for evaluation of lesions? - correct
answers -Myelography
What central ray angle is required for an anteroposterior (AP) axial inlet pelvic projection? - correct
answers -40 degrees caudad
Which part of the sacrum can be viewed from its anterior and posterior perspective? - correct answers -
Pelvic sacral foramina
Where does the central ray enter for an oblique projection of the sacroiliac joints? - correct answers -
One inch medial to the anterior superior iliac spine of the elevated side
What are the two main parts of the vertebrae? - correct answers -Body and vertebral arch
Which is the rounded and roughened structure located near the junction of the lower body and inferior
rami? - correct answers -Tuberosity of ischium
2
, What pathological conditions can be best identified when performing an anteroposterior (AP) projection
of the lumbar spine? Select all that apply. - correct answers -Scoliosis
Fractures
Neoplastic processes
What is the term used to indicate the vertebrae located in the pelvic region? - correct answers -Sacral
vertebrae
Where does the central ray enter for a lateral projection of the cervical spine? - correct answers -C4
Which is the articulation of the three divisions of the hip in an adult? - correct answers -Union of
acetabulum
What pathological conditions can be best identified when performing an anteroposterior (AP) projection
of the lumbar spine? Select all that apply. - correct answers -Scoliosis
Neoplastic Processes
Fractures
Which part of the atlas bears the weight of the head? - correct answers -Lateral masses
At which point does the spinal cord taper? - correct answers -Conus medullaris
Which condition is associated with a "humpback"? - correct answers -Kyphosis
3
Study Guide, Practice Test Questions & Answer
Explanations
Which anatomical structure should not be seen in its entirety on an anteroposterior (AP) pelvis
radiograph? - correct answers -Lesser Trochanters
What prior testing should be performed before a routine radiograph of the pelvis is started on a 25-
year-old female? - correct answers -Pregnancy Test
How many vertebrae are present in the cervical vertebrae? - correct answers -7
What is the correct central ray (CR) angle and direction for posteroanterior (PA) oblique projections of
the cervical spine? - correct answers -15 degrees caudal
At what level should the central ray be projected during the examination of an injured patient with a
dislocated L5-S1? - correct answers -1 1/2 inches inferior to the iliac crest
Which is true regarding the anatomy of the spinal cord? Select all that apply.
1. The spinal cord extends inferiorly from the brain.
2. The conus medullaris is situated at the level of S2.
3. The spinal cord terminates at the conus medullaris.
4. The bony vertebral column protects the spinal cord.
5. The subarachnoid space continues down the spinal cord to L1. - correct answers -1, 3, and 4
1
,In an oblique projection of the lumbar vertebrae, which structure forms the front legs of the "Scottie
dog"? - correct answers -Inferior articular process
Which joints are found between the articulation processes of the vertebral arches? - correct answers -
Which structures are most clearly demonstrated on an optimal 45-degree oblique cervical spine
radiograph? - correct answers -Intervertebral Foramina
Where does the central ray enter for a lateral projection of the lumbosacral spine? - correct answers -L4
Which modality involves fluoroscopy to examine the spinal canal for evaluation of lesions? - correct
answers -Myelography
What central ray angle is required for an anteroposterior (AP) axial inlet pelvic projection? - correct
answers -40 degrees caudad
Which part of the sacrum can be viewed from its anterior and posterior perspective? - correct answers -
Pelvic sacral foramina
Where does the central ray enter for an oblique projection of the sacroiliac joints? - correct answers -
One inch medial to the anterior superior iliac spine of the elevated side
What are the two main parts of the vertebrae? - correct answers -Body and vertebral arch
Which is the rounded and roughened structure located near the junction of the lower body and inferior
rami? - correct answers -Tuberosity of ischium
2
, What pathological conditions can be best identified when performing an anteroposterior (AP) projection
of the lumbar spine? Select all that apply. - correct answers -Scoliosis
Fractures
Neoplastic processes
What is the term used to indicate the vertebrae located in the pelvic region? - correct answers -Sacral
vertebrae
Where does the central ray enter for a lateral projection of the cervical spine? - correct answers -C4
Which is the articulation of the three divisions of the hip in an adult? - correct answers -Union of
acetabulum
What pathological conditions can be best identified when performing an anteroposterior (AP) projection
of the lumbar spine? Select all that apply. - correct answers -Scoliosis
Neoplastic Processes
Fractures
Which part of the atlas bears the weight of the head? - correct answers -Lateral masses
At which point does the spinal cord taper? - correct answers -Conus medullaris
Which condition is associated with a "humpback"? - correct answers -Kyphosis
3
