MRI Cervical Spine Without IV Contrast
In this 64-year-old woman with neck pain and recurrent headaches following multiple falls three weeks ago, MRI of the cervical spine without IV contrast is the appropriate imaging study. 1
Clinical Reasoning
This patient presents with several concerning features that warrant advanced imaging beyond clinical examination alone:
Key Risk Factors Present:
- Age >65 years: Older adults have significantly higher risk of cervical spine injury after falls, with age being an independent predictor 2
- Mechanism of injury: Multiple falls in rapid succession suggest potential hyperextension/flexion forces
- Pre-existing cervical herniations: Baseline degenerative disease increases vulnerability to soft tissue injury
- Persistent symptoms at 3 weeks: Ongoing neck pain and headaches suggest clinically significant pathology
- Occipital and frontal headache pattern: Consistent with cervicogenic headache from cervical pathology 3
Why MRI is the Appropriate Choice:
MRI is the gold standard for identifying soft tissue injuries that could be causing her symptoms 1. In patients with neck pain following trauma, MRI demonstrates 100% sensitivity for detecting injuries to:
- Intervertebral discs (including disc herniation or separation from vertebral endplates)
- Cervical paraspinal muscles
- Interspinous ligaments
- Spinal cord contusion or compression
- Epidural hematoma
Critical Considerations for This Patient:
Her pre-existing cervical herniations are particularly important. Trauma can cause:
- Acute disc herniation superimposed on chronic disease 4, 5
- Disc-endplate separation injuries that persist for months 4
- Cord compression from disc material, bone fragments, or hematoma 1
The headache pattern strongly suggests cervical origin. While cervicogenic headaches typically originate from C1-C3, lower cervical disc herniations (C5-C7) can also cause occipital and frontal headaches 3. Her history of cervical herniations makes this mechanism highly plausible.
Why Not CT First?
While CT is the gold standard for fractures 1, this patient has:
- No direct head impact
- Subacute presentation (3 weeks out)
- Symptoms suggesting soft tissue pathology rather than acute fracture
CT is significantly inferior to MRI for identifying soft tissue pathologies such as disc herniation, epidural hematoma, and nerve root compression that cause neurologic symptoms and may require surgical intervention 1. In patients presenting with signs or symptoms of cervical spinal cord or nerve root injury, CT should not be considered adequate for excluding significant soft tissue pathology 1.
Common Pitfalls to Avoid:
Don't dismiss symptoms because there was no head impact: Hyperextension injuries from catching oneself during falls can cause significant cervical soft tissue damage without direct trauma 4
Don't assume chronic herniations explain new symptoms: Trauma can cause acute-on-chronic disc injury requiring different management 6, 5
Don't delay imaging in elderly patients with persistent symptoms: Older adults have higher risk of missed cervical injuries, and early diagnosis improves outcomes 2, 6
Be aware MRI may show incidental findings: MRI has high sensitivity (100%) but modest specificity (64-77%) for soft tissue injuries, so correlate findings with clinical presentation 1
What to Look For on MRI:
- Disc herniation or extrusion (especially at levels of known prior disease)
- Disc-endplate separation (characteristic of hyperextension injury) 4
- Spinal cord signal changes (edema, contusion, compression)
- Epidural hematoma
- Ligamentous injury (though may overestimate severity)
- Nerve root compression
If MRI is Contraindicated:
If the patient cannot undergo MRI (pacemaker, severe claustrophobia, metallic foreign body), CT cervical spine without contrast would be the alternative, though it will miss many soft tissue injuries 1. CT myelography could be considered as a second-line option but is inferior to MRI for cord contusion and nerve root injuries 1.