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Related Concept Videos

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Viscoelastic Characterization of Soft Tissue-Mimicking Gelatin Phantoms using Indentation and Magnetic Resonance Elastography
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Slip interface imaging based on MR-elastography preoperatively predicts meningioma-brain adhesion.

Ziying Yin1, Joshua D Hughes2, Joshua D Trzasko1

  • 1Department of Radiology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA.

Journal of Magnetic Resonance Imaging : JMRI
|February 15, 2017
PubMed
Summary

Slip interface imaging (SII) accurately predicts meningioma-brain adhesion, a key factor in surgical planning. This magnetic resonance elastography (MRE)-based technique improves the assessment of tumor resectability and surgical risk.

Keywords:
magnetic resonance elastographymeningiomaoctahedral shear strainslip interface imagingsurgical planetumor-brain adhesion

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Area of Science:

  • Neurosurgery
  • Radiology
  • Medical Imaging

Background:

  • Meningiomas are primary brain tumors where the degree of adhesion to surrounding brain tissue impacts surgical planning and outcomes.
  • Accurate preoperative assessment of meningioma-brain adhesion is crucial for predicting surgical risk and tumor resectability.

Purpose of the Study:

  • To evaluate the efficacy of slip interface imaging (SII), a novel magnetic resonance elastography (MRE)-based method, in predicting the extent of meningioma-brain adhesion.
  • To compare SII findings with intraoperative surgical assessments as the gold standard.

Main Methods:

  • Twenty-five patients with meningiomas underwent preoperative SII using a 3T MR scanner with a specialized head driver to induce shear motions.
  • Tumor-brain adhesion was assessed by analyzing shear line image intensities and octahedral shear strain (OSS) values, including normalized OSS.
  • SII results were correlated with surgical findings using Cohen's κ coefficient and chi-squared tests.

Main Results:

  • Normalized OSS demonstrated good agreement (92%, κ=0.86) with surgical findings of adhesion.
  • Shear line images and raw OSS showed fair agreement (72%, κ=0.37) with surgical outcomes.
  • All SII parameters showed statistically significant correlations with surgical assessments of adhesion.

Conclusions:

  • Slip interface imaging (SII) is a noninvasive preoperative tool for assessing meningioma-brain adhesion.
  • SII, particularly normalized OSS, offers valuable information for improving surgical risk prediction and determining tumor resectability.