Radiological Analysis of Interhemispheric Fissure: A Comprehensive Study
Prabhjot Singh1, Renu Gupta2, Ashish K Nayyar2
1Department of Anatomy, All India Institute of Medical Sciences, Bilaspur, Himachal Pradesh, India. sprabhjot74@yahoo.com.
Prague Medical Report
|January 2, 2026
Summary
This study measured the depth of the interhemispheric fissure in 90 participants using MRI scans. The morphometric data provides valuable insights for neurosurgeons performing the interhemispheric approach.
Area of Science:
- Neurosurgery
- Neuroanatomy
- Radiology
Background:
- The interhemispheric fissure separates cerebral hemispheres, crucial for accessing midline brain structures.
- Limited morphometric data exists for the interhemispheric fissure, impacting surgical planning.
Purpose of the Study:
- To establish normative morphometric data for the interhemispheric fissure.
- To provide anatomical references for neurosurgical procedures utilizing the interhemispheric approach.
Main Methods:
- Magnetic resonance imaging (MRI) scans of 90 participants were analyzed.
- Interhemispheric fissure depth was measured at six reference points.
- Data was stratified by age groups and sex, with statistical analysis including unpaired t-tests and ANOVA.
Main Results:
- Mean fissure depth varied across reference points, ranging from 35.08 ± 3.20 mm (frontal pole to genu) to 54.13 ± 5.96 mm (calcarine sulcus).
- Statistical analysis revealed differences in depth across age groups.
- Specific mean depths were recorded at the coronal suture (35.64 ± 4.27 mm) and parietooccipital sulcus (43.72 ± 3.63 mm).
Conclusions:
- This study presents comprehensive morphometric data of the interhemispheric fissure.
- The findings are directly applicable to neurosurgical planning and execution of the interhemispheric approach.
- Understanding fissure depth variations aids in optimizing surgical access and minimizing risks.
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