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Clinical significance of “positive” cervical spine MRI findings following a negative CT

Abstract

Purpose

To review and analyze the clinical significance of positive acute traumatic findings seen on MRI of the cervical spine (MRCS) following a negative CT of the cervical spine (CTCS) for trauma.

Methods

We performed a sub-cohort analysis of 54 patients with negative CTCS and a positive MRCS after spine trauma from the previous multicenter study of the Research Consortium of New England Centers for Trauma (ReCONECT). Both CTCS and MRCS were independently reviewed by two emergency radiologists and two spine surgeons. The surgeons also commented on the clinical significance of the traumatic findings seen on MRCS and grouped them into unstable, potentially unstable, and stable injuries.

Results

Among 35 unevaluable patients, MRCS showed one unstable (hyperextension) and two potentially unstable (hyperflexion) injuries. Subtle findings were seen on CTCS in 2 of 3 patients upon careful retrospective review that would have suggested these injuries. Of 19 patients presenting with cervicalgia, 2/5 (40%) patients with neurological deficit demonstrated clinically significant findings on MRCS with predisposing factors seen on CT. None of the 14 patients with isolated cervicalgia and no neurological deficit had clinically significant findings on their MRCS.

Conclusion

While CTCS is adequate for clearing the cervical spine in patients with isolated cervicalgia, MRCS can play a critical role in patients with neurological deficits and normal CTCS. Clinically significant traumatic findings were seen in 8.5% of unevaluable patients on MRCS, though these injuries in fact could be identified on the CT in 2 of 3 patients upon careful retrospective review.

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Correspondence to Bharti Khurana.

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Bharti Khurana

GE Health Care Research Grant;

Book Royalties from Cambridge University Press;

Section Editor Royalties, Emergency Radiology, UptoDate, Wolters Kluwer; and.

ROKIT Health Care, Consulting.

Christopher M. Bono

NASS/The Spine Journal

United Health Care, Consultant

Elsevier, royalties

Wolters Kluwer, royalties.

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Khurana, B., Keraliya, A., Velmahos, G. et al. Clinical significance of “positive” cervical spine MRI findings following a negative CT. Emerg Radiol 29, 307–316 (2022). https://doi.org/10.1007/s10140-021-01992-5

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  • DOI: https://doi.org/10.1007/s10140-021-01992-5

Keywords

  • Spine trauma
  • CT of the cervical spine
  • MRI of the cervical spine
  • Spine stability