| Objective: To explore the role of diffusion tensor imaging and diffusion tensor tractography in the study of normal anatomy of pyramidal tract and preoperative planning and functional outcome evaluation of the patients with brain tumors involving pyramidal tracts.Methods: 30 patients with tumors hospital patients and 2 healthy volunteers, all tumors were new tumors. There were 15 men, 15 were female, two cases of healthy volunteers and a woman, the average age was 36 years old. Random sample of 30 cases of cancer patients by clinical diagnosis and pathology confirmed 15 cases of glioma, meningioma in 15 cases. All patients and normal volunteers were T1WI, T2WI, Dark-fluid such as scanning, magnetic resonance diffusion tensor scans. Collection of data treated by MRI map, FA map, FA color pictures, DTT map, after MRI map, FA map, FA color pictures, DTT comparative analysis between maps,Clear pyramidal structure, course, shifting and spatial relationships with adjacent tumor. Result: The normal structure of cerebral pyramidal tracts and the relationship between the pyramidal tracts and the tumor were successfully displayed. In thiry patients, eleven cases were simple displacement, nine cases were simple disruption. Other ten cases were displacement with disruption.Conclusion:â‘ Diffusion tensor imaging and diffusion tensor tractography can display the normal structure of cerebral pyramidal tracts and exact relationship between pyramidal tracts and tumors.â‘¡By means of contrasting datas of exact relationship between pyramidal tracts and tumors can invasion of high-grade gliomas;â‘¢Diffusion tensor imaging and diffusion tensor tractography is useful for preoperative investigation, especially when assisting surgical planning, e.g. deciding on a surgical approach and the extent of rese-ction of gliomas without damaging important fiber tracts nearby,and also helpful to evaluate prognosis by comparing preoperative tractography with that of postoperation. |
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