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Purpose <p>To evaluate morphometric correlation between the interventricular foramen and <i>pars opercularis</i> through MRI.</p> Methods <p>This retrospective, cross-sectional, and observational study analyzed 90 cerebral hemispheres from patients treated at Ophir Loyola Hospital. Volumetric T1-weighted MRI sequences (1-mm slices) were processed in 3D Slicer. Distances between the interventricular foramen and <i>pars opercularis</i> were measured along the X (anteroposterior), Y (superoinferior), and Z (laterolateral) axes. Pearson’s correlation and <i>t</i>-tests were applied for statistical analysis.</p> Results <p>The <i>Pars Opercularis</i> was predominantly anterior (9.96&#xa0;mm) and superior (2.62&#xa0;mm) to the interventricular foramen, with a mean linear distance of 45.21&#xa0;mm. Significant lateral differences were observed: the right hemisphere exhibited a greater linear distance (46.52&#xa0;mm) than the left (43.90&#xa0;mm). Age did not demonstrate a statistically significant correlation with the laterolateral dimension (Z-axis) or other measured variables.</p> Conclusion <p>The Interventricular Foramen maintains a consistent spatial relationship with the <i>pars opercularis</i>, with stable positioning and subtle hemispheric differences. These findings refine anatomical knowledge and contribute to neurosurgical planning, particularly in procedures requiring precise anatomical references, such as ventricular surgeries and resections near eloquent cortical areas.</p>

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Correlation between the interventricular foramen and the Pars opercularis: a morphometric analysis

  • 期刊论文

  • 发表日期：

    2026年2月24日

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  • Teófilo Dorneles Claro dos Santos Silva,
  • Esequiel José Felipe de Medeiros Neto,
  • Luiz Carlos Figueiredo Filho,
  • Matheus Gondim Christino,
  • Nelson Machado da Silva de Lima,
  • Artur Francisco da Conceição Nascimento Neto,
  • Andrew Moraes Monteiro,
  • José Reginaldo Nascimento Brito,
  • Mateus Reghin Neto,
  • Antonio Carlos de Souza Corrêa

摘要

Purpose

To evaluate morphometric correlation between the interventricular foramen and pars opercularis through MRI.

Methods

This retrospective, cross-sectional, and observational study analyzed 90 cerebral hemispheres from patients treated at Ophir Loyola Hospital. Volumetric T1-weighted MRI sequences (1-mm slices) were processed in 3D Slicer. Distances between the interventricular foramen and pars opercularis were measured along the X (anteroposterior), Y (superoinferior), and Z (laterolateral) axes. Pearson’s correlation and t-tests were applied for statistical analysis.

Results

The Pars Opercularis was predominantly anterior (9.96 mm) and superior (2.62 mm) to the interventricular foramen, with a mean linear distance of 45.21 mm. Significant lateral differences were observed: the right hemisphere exhibited a greater linear distance (46.52 mm) than the left (43.90 mm). Age did not demonstrate a statistically significant correlation with the laterolateral dimension (Z-axis) or other measured variables.

Conclusion

The Interventricular Foramen maintains a consistent spatial relationship with the pars opercularis, with stable positioning and subtle hemispheric differences. These findings refine anatomical knowledge and contribute to neurosurgical planning, particularly in procedures requiring precise anatomical references, such as ventricular surgeries and resections near eloquent cortical areas.