Asymmetry of cingulate sulcus and paracingulate sulcus

Objective: To observe the presence of the paracingulate sulcus(PCS) and the continuity of the cingulate sulcus(CS).Methods: Thirty healthy adult brain sagittal-sectional MRI data were imported into efilm workstation in the form of Dicom 3.0,and the lateral median sagittal planes of every two hemispheres were selected.The presence of the PCS and the continuity of the CS were observed.Results: The presence of the PCS:the left hemisphere was 56.67%,the right was 26.67%.The presence of continuous cingulate sulcus:the left was 63.33% when no PCS,and 88.24% when there was PCS;The right was 50% when no PCS,and 71.43% when there was PCS.Conclusions: The results reveal a striking hemispheric asymmetry in the presence of paracingulate sulcus and considerable variability in the above morphological features.