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. 2020 Jul;25(3):193-199.
doi: 10.17712/nsj.2020.3.20190093.

Corpus callosum index correlates with brain volumetry and disability in multiple sclerosis patients

Stefanus E Sugijono  1 , Rahmad Mulyadi, Salsabila Firdausia, Joedo Prihartono, Riwanti Estiasari
Affiliations

Corpus callosum index correlates with brain volumetry and disability in multiple sclerosis patients

Stefanus E Sugijono et al. Neurosciences (Riyadh). 2020 Jul.

Abstract

Objective: To analyze the correlation between corpus callosum index (CCI), brain volumetry, and disability in multiple sclerosis (MS) patients. The brain volumetry consists of the corpus callosum, cortical gray matter, subcortical gray matter, and white matter volumes.

Methods: This was a retrospective cross-sectional study from October 2018 to February 2019 of 30 patients with MS aged 20 to 61 years old. Brain volumetry was performed using FreeSurfer software. The CCI were measured manually using conventional best mid-sagittal T1W brain MRI. The anterior, posterior, and medium segments were measured and divided to its greatest anteroposterior diameter. Higher CCI values indicated greater corpus callosum volumes. Clinical evaluation was comprised of MS subtype, age of onset, relapse frequency and Expanded Disability Status Scale (EDSS).

Results: Thirty MS patients with median of age 22 years were included. Relapsing-remitting (RRMS) subtype were 73.3%. Very significant correlations were shown between the CCI and corpus callosum volume (CCV) (r=0.79; p<0.0001) and cerebral white matter volume (r=0.81; p<0.0001). Significant correlations were shown between the CCI and cortical gray matter volume (r=0.64; p<0.0001) and subcortical gray matter volume (r=0.69; p<0.0001). The CCI was positively correlated with age of onset and inversely with EDSS. The CCV and CCI were smaller in secondary progressive MS (SPMS).

Conclusion: The CCI is easy and fast to obtain in conventional MRI and significantly correlated with brain volumetry, age of onset and disability in MS patients.

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Figures

Figure 1
Figure 1
Measurement of CCI using method proposed by Figuera et al. The anterior segment is represented by aa’, the posterior by bb’ and cc’ corresponds to the medium segment. The CC was acquired by normalizing the 3 segments by the farthest anteroposterior segment (ab).
Figure 2
Figure 2
Correlation between CCI with A) Corpus Callosum volume, B) Cortical Grey Matter volume, C) Subcortical Grey Matter Volume and D) Cerebral White Matter volume
See this image and copyright information in PMC

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