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Related Experiment Videos

Fixed spinal cord: diagnosis with MR imaging.

L M Levy1, G Di Chiro, D C McCullough

  • 1Neuroimaging Section, National Institute of Neurological and Communicative Disorders and Stroke, Bethesda, MD 20892.

Radiology
|December 1, 1988
PubMed
Summary

Phase imaging reveals spinal cord pulsatile motion, finding decreased motion in tethered or compressed cords. This technique may aid in diagnosing conditions affecting cord mobility and compliance.

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Area of Science:

  • Neurosurgery
  • Radiology
  • Medical Imaging

Background:

  • The spinal cord exhibits pulsatile motion synchronized with the cardiac cycle.
  • Assessing this motion can provide insights into spinal cord health and pathology.

Purpose of the Study:

  • To investigate spinal cord pulsatile motion using phase imaging techniques.
  • To evaluate the impact of spinal cord tethering, compression, and intramedullary lesions on pulsatile motion.

Main Methods:

  • Sagittal phase imaging of the spinal cord was performed at various cardiac cycle phases.
  • Healthy volunteers and patients with spinal cord conditions were included.
  • Pulsatile velocity changes were analyzed, particularly at the cervical-upper thoracic level.

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Main Results:

  • Pulsatile spinal cord motion was most pronounced at the cervical-upper thoracic region.
  • Significantly reduced cord motion was observed in patients with tethered or compressed spinal cords.
  • Intramedullary lesions causing cord enlargement did not consistently decrease pulsatile motion.

Conclusions:

  • Phase imaging of spinal cord pulsatile motion is a viable technique.
  • Decreased pulsatile motion is indicative of spinal cord tethering or compression.
  • This imaging method holds potential for clinical evaluation of diseases affecting spinal cord mobility and parenchymal compliance.