Three-dimensional morphology and asymmetry of the intraparietal sulcus in Chinese brain / 解剖学报

ABSTRACT

Objective The pattern and morphological features of the intraparietal sulcus(IPS) were explored on MRI in vivo using 3D visualization method,so as to provide anatomical basis for the brain function studies of the parietal lobe as well as the diagnosis and treatment of the related diseases. Methods Totally 107 right-handed Chinese subjects were selected and scanned to acquire high quality MR images of the brains using 3. 0T high-resolution magnetic resonance imaging scanner. The 3D anatomical model of the IPS was reconstructed by BrainVISA, then the morphological patterns of the IPS were observed and analyzed. Results There were three types of the IPS: Continuous type, two segments type and three segments type. The gyri which separate different segments were either visible on the brain surface or buried within the sulcus. In the left brain, the continuous type was in dominant(56. 07%). while the two segments type was the most common type in the right brain(58. 49%) ,and the morphology of the IPS had significant asymmetries in both sides(lJ0. 05). Conclusion The morphology of the IPS is very complicated and it has three main types. There are obvious bilateral differences within the IPS.