The building of the stereotactic data set of calcarine sulcus and difference analysis of the paramedian sagittal plane

ObjectiveTo build the stereotactic data set of calcarine sulcus(CS) on the paramedian sagittal plane(X=±7 mm), and explore the CS variability among different lateral, gender and position.

MethodsThe three-dimensional coordinate system was established with the midpoint of AC-PC line as the origin.The length of CS on paramedian sagittal T1MRI planes of the brain of 30 healthy adults were measured using 3D-Doctor workstation, the measurement points were selected at a multiple of 3 mm on this section to construct the data set, and the quadratic regression equation of Z value to Y value was calculated.

ResultsThe differences of the length of CS in different laterals and genders were not statistically significant(P>0.05).In the direction of Y axis, the left side of the back end of the CS was behind the right side.On paramedian sagittal planes, the smaller the positional variability of CS was, the closer the CS to the origin of the brain was.On paramedian sagittal plane, the quadratic regression equations of Z-value to Y-value of the CS in the left side and right side were Z=-32.717-1.587Y-0.016Y² and Z=-30.390-1.537Y-0.015Y², respectively(P < 0.01).

ConclusionsThe building stereotaxic data set in this study is expected to be of guiding significance for the localizating the visual cortical functional areas, lesion area and surgical treatment in the vicinity of the calcarine sulcus.