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Comparison of 3D constructive interference in steady state (CISS) and T2 sampling perfection with application optimized contrasts using different flip angle evolution MR imaging of the intracranial trigeminal nerve and central skull base neuroforamina. | LitMetric

AI Article Synopsis

  • * Researchers reviewed images from 40 patients, and two radiologists rated the visibility of anatomical structures related to the trigeminal nerve on a 3-point scale.
  • * Results showed that the T2-SPACE imaging technique outperformed CISS in visualizing the trigeminal nerve's regions, indicating it may be a more effective tool for surgical planning and disease management.

Article Abstract

Background And Purpose: Due to surgical advancements, the accurate detection of perineural disease spread has become increasingly important in the management and prognostication of head and neck cancers, though MR evaluation has thus far been limited by technical and logistic challenges. The purpose of this study was to specifically evaluate the relative capability of 3D CISS and 3D T2-SPACE imaging to delineate the proximal intracranial divisions of the normal trigeminal nerve, an area important in determining the resectability of intracranial perineural disease.

Materials And Methods: A single center HIPAA-compliant, IRB approved retrospective review of 40 patients with clinical temporal bone/internal auditory canal MR imaging was conducted. 20 patients with 3D CISS images and 20 patients with 3D T2-SPACE images met inclusion criteria. Two radiologists scored the sequences on a 3-point scale based on ability to visualize anatomic structures surrounding the trigeminal nerve in Meckel's cave, intracranial trigeminal divisions, skull base neuroforamina, and proximal extracranial mandibular division.

Results: The following anatomic locations scored significantly better in the T2-SPACE sequence compared to the CISS sequence for both raters: intracranial V3 ( < .05), foramen ovale ( < .05), and extracranial V3 ( < .01). The average scores for the anterior Meckel's cave and foramen rotundum were higher for the T2-SPACE sequence, although not significantly. Percent interobserver agreement ranged from 50 to 90% and 65-100% for the different anatomic locations on the CISS and T2-SPACE sequences, respectively.

Conclusion: 3D T2-SPACE was found to be superior to 3D CISS in the evaluation of the distal intracranial and extracranial portions of the normal trigeminal nerve.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9626844PMC
http://dx.doi.org/10.1177/19714009221084248DOI Listing

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