ObjectiveTo construct the stereotatic localization data set and its plane projection regression equation of the hippocampal sulcus based on the AC-PC localization system.

MethodsThe transverse tomography data of 30 healthy adults were imported into Photoshop CS software package by format transformation.After strict image registration, a three-dimensional sitting system with AC-PC midpoint as the origin was established to obtain the three-dimensional coordinate values of hippocampal sulcus in the coronal plane images of brain.Taking the outermost point of the hippocampal sulcus as the starting point, record the X-value and Z-value, which were directly displayed in the information panel of the software, and the Y-value was the product of the number of layers between the image layer and AC-PC plane and interlayer spacing.The stereotactic data set of the hippocampal sulcus in a three-dimensional coordinate system were constituted by all the coordinate values of sample points.The SPSS25.0 software was used to calculate the obtained sampling point data, and solve the projection regression equation.

ResultsThe stereotaxic dataset of the hippocampal sulcus in the three-dimensional coordinate system and its projection regression equation on the transverse, sagittal and coronal planes were successfully constructed.On the right side of the regression equation of Z-value to X-value on the coronal plane: Z=-46.379-0.302X(P < 0.05), on the left side: Z=-49.512+0.425X(P < 0.05).On the right side of the regression equation of Y-value to X-value on the transverse plane: Y=-0.380-0.198X(P>0.05), on the left side: Y=2.982+0.106X(P>0.05).On the right side of the regression equation of Z-value to Y-value on the sagittal plane: Z=-38.501+0.416Y(P < 0.01), on the left side: Z=-36.793+0.326Y(P < 0.01).

ConclusionsThe correlation among the three-dimensional coordinate values of the transverse, coronal and sagittal plane of the hippocampal sulcus of the brain is not close.The stereotactic localization data set of the hippocampal sulcus provides accurate image anatomical data for the localization of lesions, the target determination and surgical path planning of stereotactic surgery in the hippocampal region.