| Background This technique of simultaneous stereotactic localization of the subcortical lesion and its adjacent gyrus and sulcus,before surgical approach,make it possible to noninvasive live brain research.Using this powerful research techniques the morphology,positioning,various variation and the relationship between the structure of the human brain are researched by anatomist,and a series of valuable results are obtained.Over the past 20 years,a lot of knowledge from different disciplines are absorbed by brain science,which get rapid development.Especially adding the new field of computational science and mathematics make the research of brain science into the live quantitative analysis,mathematical modeling,virtual reality and visualization of the period.Postcentral gyrus is also known as block with postcentral gyrus which locate between in the central sulcus and the postcentral sulcus the continuous and constant central sulcus is its former world after the caudal bound for the central groove under and after the central channel. The furcal postcentral sulcus bag around the edge of the lateral side signs said bifurcate postcentral sulcus,the left hemisphere(88%),the right hemisphere(72%),about hslf of which arrived in lateral sulcus,intraparietal sulcus often starts its middle or top. The inferior of postcentral sulcus originate from lateral sulcus,ending at frontoparietal operculum where formatted a small notch.Functional brain research is based on the precise anatomic partition,positioning,and its￠ associated.An higher requiremements are also put forward for clinical diagnosis and treatment of minimally invasive brain structure.This study proposed using MRI imaging technology to research postcentral gyrus,looking forward to reveal the laws of morphology,spatial location,fender and side difference.Objective: The purposes of this study is to explore the morphology of postcentral gyrus on MRI base on AC-PC bassline. Building a three-dimensional stereotaxic data sets about postcentral grrus,concluded its projection in cross section and coronal plane.Reconstructed and visualize them for the imaging diagnosis and functional stereotactic neurosurgery,measure their tri-dimensional coordinates to guide the surgery treatment of tumors in the postcentral areas.Methods: 1. 20 males and 22 females brain healthy adult volunteers in diameter between the brain(AC-PC line) for scanning the baseline, the line transverse layer 2mm T1 MR scan. Microcomputer image data will be imported e Film3.4 workstation Dicom3.0 format. Applications "3D-Cursor" technology to identify the brain after the central back on a continuous cross-sectional shape and position. Observation, statistical central gyrus morphology; 2. The 42 cases of healthy adult volunteers cross-sectional MRI brain image data export to JPG format, and then import it into Photoshop, use Photoshop image processing functions, the system coordinate origin and around the joint between the front and rear joint neutral midpoint Y axis coincides with the system and the brain lines coincide, establish standards Cartesian coordinate system function directly read by Photoshop software coordinates, get back to the front and rear walls after a fault from the center on(X, Y) to the point of value, Z-value layer distance between the origin of the brain where the level by level the number and thickness of the product, the coordinate values measured after the central back to front and rear walls that starting point in the three-dimensional coordinates of the three-dimensional positioning data set only, these data to calculate the cross-section and coronal plane in SPSS17 statistical software projection Figure and the regression equation and regression curves. 3. In the image processing computer, the application one case of normal adult brainMRI cross-sectional data to Dicom format to import 3D-DOCTOR reconstruction software, manually segmented the postcentral gyrus, the gyrus central, lateral, and interhemispheric brain surface, different organizations were marked in different colors, the segmented structure of three-dimensional reconstruction method using surface reconstruction.Results:1. By e Film software continuously track and three-dimensional scaling techniques can be easily and accurately locate the position back in the cross section, sagittal and coronal planes in MRI after central. 2.After obtaining measurements from the anterior and the poscental gyrus,the point of three dimensional data set,the statistics drawn back the postcentral gyrus section of the projected image,calculate the center back after regression curves and regression equations. 3. The postcentral gyrus, lateral, and interhemispheric brain surface, from the three-dimensional shape image reproduction, and after returning to the central location near the important relationship between structure and function areas and space in the brain in the brain surface position, 360 ° rotation observe any orientation.Conclusions:1. It easy to identify cross-sectional center back after application continuously track and after three calibration techniques can accurately locate the center of the sagittal and coronal plane back to the appropriate location, provide the basis for lesion localization method central area. 2.(1)It is farther away from midline to the end point of the postcentral gyrus of right front wall in male(2)It is closer to midline to the origin point of the postcentral gyrus of left front wall in female(3)It is relative fronter to male’s left postcentral gyrus.Difference in interhemsphere could be attributed to asymmetry in Wernicke’s area of left parietal lobe and Broca’s area of left gyrus frontalis inferior.The difference in gender might be explained by a relative larger parietal association cortex in men but not in momen. 3. Three-dimensional reconstruction of the postcentral gyrus visual model, seen after the central gyrus is located outside of the brain after 1/3, the upper slightly tilted backwards, showing crescent coronal gyrus, medial end multi-forked outer end was a puppet foot sign. After rebuilding the model back to the center can be positioned as acentral clinical disease after area, providing diagnostic value... |
PDF Full Text Request