Magnetic Resonance Imaging-Based Morphometric Assessment of Sexual Dimorphism of Corpus Callosum

نویسندگان

Abbas Aliaghaei Department of Anatomy and Cell Biology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Amir Abdolmaleki Department of Anatomy and Cell Biology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Fatemeh Shaerzadeh Department of Physiology, Faculty of Medicine, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.

Hojjat-allah Abbaszadeh Hearing Disorders Research Center, Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Reza Mastery Farahani Department of Anatomy and Cell Biology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Seyed Kamran Ghoreishi Department of Statistics, Faculty of Sciences, University of Qom, Qom, Iran.

Seyyed Hossein Mirjavadi Advanced Diagnostic and Interventional Radiology Research Center, Tehran University of Medical Sciences, Tehran, Iran.

چکیده مقاله:

Introduction: Interhemispheric transmission of signal is done by corpus callosum (CC) as the largest fiber tract in brain. CC comprised 5 segments of rostrum, genu, body, isthmus, and splenium. Contradictory reports exist about sexual dimorphism of CC. We designed this study to assess probable sexual differences of CC and its different parts in men and women. Methods: We analyzed magnetic resonance (MR) images of 68 females and 60 males in midsagittal view by PmsDViewer software. Data were analyzed by Student t test. These cases had no neurologic and pathologic diseases. Results: MRI anthropometric analysis indicates that all segments of CC are larger in men compared to women. Moreover, our results also revealed that although all segments of CC were bigger in men, this increase in size was more prominent in the anterior segments of CC. Conclusion: These findings indicate gender-related differences regarding CC segments. Notably, brain size as an interfering variable was eliminated in this study.

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magnetic resonance imaging-based morphometric assessment of sexual dimorphism of corpus callosum

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