Radiology & MRI Flashcards
Why would we use a C-Spine AP Radiograph?
To visualize transverse processes, vertebral bodies, and uncovertebral joints
To visualize disc height/space
To visualize articulation of 1st and 2nd rib
Why would we use a C-Spine lateral radiograph?
If we suspect spondylolistheses
If we suspect instability
To visualize disc height
To visualize spinous process, facet, and vertebral bodies
To visualize C1 arch articulation with dens
Why would we use a C-spine flexion-extension radiograph?
If we suspect vertebral segment instability
If we suspect C1-C2 instability
To visualize segmental translation and alignment with motion
To assess joint motion across segments
Why would we use a swimmer’s view radiograph?
If we suspect CT junction injury
If we suspect mid-to upper thoracic injury
To visualize CT junction
To visualize 1st rib
Why would we use a C-spine oblique radiograph?
If we suspect radiculopathy
To visualize intervertebral foramina
To visualize the pedicle
To visualize vertebral bodies and the posterior arch of C1
Why would we use a C-spine odontoid radiograph?
If we suspect upper CS instability
To visualize odontoid process well
To visualize AA joint
To visualize lateral arch of C1
What is this?
Odontoid fracture
What is atlantoaxial subluxation?
Subluxation of the C1-C2 joint
How does someone get an atlantoaxial subluxation
It is typically traumatic or congenital
What are the special populations at risk for atlantoaxial subluxation?
Rheumatoid arthritis
Down’s syndrome
Marfan’s syndrome
What are indications to order an MRI deemed appropriate by ACR?
New or increasing cervical radiculopathy
Suspicion of infection with new or increasing neck pain or radiculopathy
Known malignancy or history of malignancy and new/increasing symptoms
Chronic neck pain and radiographs indicate degenerative changes
When would we order an MRI?
Presence of worsening myotomal weakness, altered DTRs, dermatomal pattern of pain/paresthesia
Neck pain greater than 6 weeks and/or meet criteria for presence of radiculopathy
Chronic neck pain (greater than 3 months) and over 50 years of age
Signs and symptoms consistent with myelopathy/UMN signs
What is the utility of a sagittal cut MRI?
To see alignment
Central cord assessment
IVD fluidity/health
Joint spacing
Vertebral body congruency
What is the utility of an axial view MRI?
Foraminal narrowing
IVD annular ring assessment
Central cord and segmental nerve
Pars assessment
Facet assessment
Pedicle assessment
