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Morphometry of corpus callosum: an anatomical study

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Author(s): Anagnostopoulou S | Mourgela S | Katritsis D

Journal: Neuroanatomy
ISSN 1303-1783

Volume: 5;
Issue: 1;
Start page: 20;
Date: 2006;
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Keywords: callosotomy | corpus callosum | morphometry | dissection | cadaver | intractable epilepsy

ABSTRACT
The purpose of this study was to measure the longitudinal and vertical diameters of corpus callosum and itsparts as well as the brain; in order to define the position of corpus callosum within the brain. In this study, 42 formalin fixed brains, which were removed from cadavers (23 males, 19 females), aged 30-40years, were used. Brains were carefully cut in the mediosagittal plane and the medial surface of the brainhemispheres were printed on a transparent sheet of paper. On these papers, the longitudinal diameters ofevery anatomical part of corpus callosum and longitudinal and vertical diameters of brain hemispheres weremeasured. The diameters measured were: the longitudinal (frontal to occipital pole-AB) and the vertical diameter (upperto lower surface of brain hemisphere-CD) of brain hemispheres, the distance of genu to frontal pole (AE), thedistance of splenium to occipital pole (ZB), the longitudinal diameter of genu (EZ/3) and splenium (EZ/5), andthe longitudinal diameter of CC (EZ). Statistical analysis followed, which was performed by using the 2-tailedPearson correlation test. AB has a positive linear correlation with CD, AE, BZ and with EZ. EZ has a positivelinear correlation with AB and with CD. The ratios EZ/AB=0.46, EZ/CD=0.85, EZ/AE=2.29 and EZ/ZB=1.42represented stable analogies. By applying these ratios to radiological images of patients, the neurosurgeons would perform the targetedcallosal procedures in a more precise way.

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