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Sacral plexus: optimal imaging planes for MR assessment

L C Blake1, W D Robertson, C E Hayes

  • 1Department of Radiology, University of Washington, School of Medicine, Seattle 98195, USA.

Radiology
|June 1, 1996
PubMed
Summary
This summary is machine-generated.

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Direct coronal and axial magnetic resonance (MR) imaging planes are optimal for evaluating the sacral plexus (SP) and sciatic nerve (SN). This combination ensures comprehensive visualization of all SP and SN components for accurate diagnosis.

Area of Science:

  • Radiology
  • Neuroimaging
  • Anatomy

Background:

  • The sacral plexus (SP) and sciatic nerve (SN) are crucial for lower limb function.
  • Accurate MR imaging of the SP and SN is essential for diagnosing various neurological conditions.

Purpose of the Study:

  • To determine the optimal magnetic resonance (MR) imaging planes for evaluating the sacral plexus (SP) and proximal sciatic nerve (SN).

Main Methods:

  • Prospective study of 10 healthy adult volunteers using T1-weighted MR imaging and custom pelvic phased-array coils.
  • Grading the conspicuity of 12 anatomical characteristics of the SP and SN in coronal, axial, and oblique planes.
  • Statistical analysis using Kruskal-Wallis and Wilcoxon signed rank tests.

Main Results:

Related Experiment Videos

  • Direct coronal and axial planes were superior for visualizing key SP and SN components, including nerve roots and the sciatic nerve in the greater sciatic foramen.
  • The sacral coronal plane was optimal for imaging the bony sacrum, sacral foramina, and proximal nerve roots.
  • At least two imaging planes are necessary for a complete assessment of the SP and SN.

Conclusions:

  • A combination of direct coronal and direct axial MR imaging planes allows for a thorough evaluation of the sacral plexus and proximal sciatic nerve.
  • These optimal planes facilitate comprehensive assessment of all SP and SN structures.