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Related Experiment Videos

The spinal vacuum phenomenon: evaluation by gradient echo MR imaging.

D H Berns1, J S Ross, D Kormos

  • 1West Side Imaging and Oncology Center, Brookpark, OH.

Journal of Computer Assisted Tomography
|March 1, 1991
PubMed
Summary
This summary is machine-generated.

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Gradient echo MRI effectively detects vacuum phenomena in lumbar spines, outperforming other imaging methods for small gas collections. Longer echo times enhance visualization of these air pockets.

Area of Science:

  • Radiology
  • Medical Imaging
  • Spine Imaging

Background:

  • Vacuum phenomena, or gas collections within intervertebral discs, can be challenging to detect with standard imaging.
  • Accurate identification of intradiscal gas is crucial for diagnosing disc degeneration and related pathologies.

Purpose of the Study:

  • To assess the sensitivity of gradient echo Magnetic Resonance (MR) imaging in detecting vacuum phenomena.
  • To compare gradient echo MR with spin echo MR, Computed Tomography (CT), and plain radiography for vacuum phenomena detection.

Main Methods:

  • 14 cadaveric lumbar spines were used.
  • Air was injected into intervertebral discs in varying amounts.
  • Imaging was performed using spin echo MR, gradient echo MR, CT, and plain radiography.

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Main Results:

  • Gradient echo MR demonstrated higher sensitivity than spin echo MR and plain radiography in detecting even small intradiscal gas collections (as low as 0.1 cc).
  • Computed tomography showed sensitivity comparable to gradient echo MR.
  • Plain radiography was the least sensitive imaging modality.
  • Increasing the echo time in gradient echo MR enhanced the conspicuity of gas collections due to magnetic susceptibility effects.

Conclusions:

  • Gradient echo MR is a highly sensitive technique for defining vacuum phenomena in the lumbar spine.
  • Gradient echo MR, particularly with optimized echo times, offers significant advantages over conventional radiography and comparable performance to CT for detecting intradiscal gas.