| In recent years,with the progress of advanced imaging technology and the rapid development of science,more and more advanced instruments are available for human modern medicine.The development of advanced instruments naturally promotes the field that traditional medicine can not be deeply studied,and the brain is one of the important fields.These techniques for locating diagnosis and surgical treatment of clinical disease provide certain help.The advanced equipment of modern medicine can easy to obtain the image of the brain,which play a very important role in brain science and clinical medicine.Through to the intraparietal sulcus characteristic research and the formation of the three-dimensional positioning data set can be better for the intraparietal sulcus adjacent area within the lesion treatment plan.Intraparietal sulcus(IS)is located at the behind of central posterior sulcus in the parietal lobe,and intraparietal sulcus is in a parallel relationship with the longitudinal fissure of the brain.It separates the superior leaflet from the inferior parietal lobe,and the inferior parietal sulcus runs from front to back in the parietal lobe.There are many important cortical functional areas around the medial parietal sulcus,such as the superior and inferior parietal lobe,the inferior parietal lobe are also divided into the superior marginal gyrus and the angular gyrus.The angular gyrus is the visual language area.As for the types of acromial sulcus,some scholars have previously studied and divided them into ’one segment’ type,’two segment’ type and ’three segment’ type.Through this type of research,we can analyze the growth and development rules of intraparietal sulcus,etc.Thus laying a foundation for better identification and locatization of intraparietal sulcus.In this stydy,MRI images of the brain of 30 healthy adults were collected and the midpoint of the brain AC-PC connection(connectiveline)was taken as the origin to establish a three-dimensional system and obtain T1 WI images of the transverse,coronal and sagittal planes.Research within the intraparietal sulcus morphological characteristics and important brain tissue surrounding space position relations,measured the intraparietal sulcus of stereotaxic data sets,and use the computer and statistical methods and its projection and the regression equation of the plane.Finally,through the3D-doctor software,image segmentation and reconstruction of the intraparietal sulcus and its surrounding structures are carried out,to give a three-dimensional model of the intraparietal sulcus in the living brain.It is expected to provide anatomical basis for stereotactic neurosurgery for lesions in the intraparietal sulcus and its surrounding areas as well as the planning of robot precision surgery in the future.Objective:1.To investigate the thin-layer MRI images of the brain with AC-PC line as the baseline to recognize and study the intraparietal sulcus morphological characteristics and regularity in transverse,coronal and sagittal plane.2.To establish the data set and the regression equation of plane projection in the intracranial space localization system based on AC-PC line.3.To understand the spatial and anatomical characteristics of the intraparietal sulcus in healthy adults by constructing the dimensional visualization of the intraparietal sulcus in MRI images,and its application in stereotactic microinvasive surgery.Methods:1.Thirty healthy adults were selected,including 15 males and 15 females.With AC-PC line as the reference line,MRI T1 WI images were continuously and the thickness of the layer was set as 2mm.Skull fixation was ensured during the scanning process.To obtain T1 WI MRI images on the transverse,crown and sagittal planes were saved and imported into e Flim2.1 workstation in the format of Dicom3.0.The position changes and morphological characteristics of the intraparietal sulcus on the transverse,crown and sagittal plane were observed in the software ’3D-CURSOR’.2.The MRI image of the craniocerebral coronal plane of 30 healthy adults were imported into Photoshop CS 5.0 package,after image registration,take the midpoint of the AC-PC line as the origin to set up cartesian three dimensional coordinates,from the side point of intraparietal sulcus as the starting point,the X-value and Z-value of the sample point was recorded directly from 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,all the coordinate values of the sampling points constitute the three-dimensional positioning data set of the intraparietal sulcus in the three-dimensional coordinate system.Excel software was used to summarize and process the measured data,draw the projection distribution diagram of the medial margin of the intraparietal sulcus.The SPSS22.0 was used for statistical analysis of the data and obtain the spatial fitting curve plane regression equation of the medial margin of the intraparietal sulcus.3.A thin layer MRI scan image of the brain of a healthy male was selected and imported into 3D-doctor software.Manual segmentation method was used to segment and reconstruct the brain’s intraparietal sulcus and it’s surrounding brain tissues,and different color marks were used.Results:1.The structure of the intraparietal sulcus at the T1 WI MRI continuous layer was identified,and the morphological and position change of the intraparietal sulcus were obtained.2.The stereotaxic data set of the medial edge of the intraparietal sulcus are established,and the data set was located in transverse,coronal and sagittal plane projection diagram and regression equation.3.The three-dimensional visualization model of the brain’s intraparietal sulcus and it’s adjacent important brain tissue structures was successfully constructed.Conclusion:1.The intraparietal sulcus is more easily recognized in the coronal plane,parallel to the longitudinal fissure of the brain,and is the boundary between the superior and inferior parietal lobule.It is mainly divided into "one segment" type,"two segment" type and "three segment" type.Through the combination of "3D-CURSOR" and "continuous tracking" software to identify the intraparietal sulcus,which has various shape in transverse,crown and sagittal plane.It provides anatomic basis for the surgical approach to the intraparietal sulcus and its surrounding diseases.2.It provides anatomical basis for the precise location of lesions in the intraparietal sulcus and surrounding areas,and has important value for the study of parietal function,imaging location of parietal lesions and stereotactic neurosurgical treatment.3.The three-dimensional visualization model of the intraparietal sulcus can be used to better observe the spatial relationship between it and the surrounding brain structure,which is of great value to the adjuvant treatment of lesions in this area and the formulation of surgical plans. |
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