Dynamic changes of brain cavity in rats after traumatic brain injury detected by MRI-based three-dimensional reconstruction / 中国组织工程研究

ABSTRACT

BACKGROUND:Currently, morphological observations of brain cavity after traumatic brain injury (TBI) via cadavers or animal specimen are difficult to obtain dynamic changes. OBJECTIVE:To explore the application effect of MRI-based three-dimensional (3D) reconstruction for evaluating the prognosis of TBI. METHODS:Five male Sprague-Dawley rats were enrol ed to establish TBI models by Electronic Cortical Contusion Injury (eCCI), and scanned by 3.0T MRI with Rat-coil to obtain the DICOM date of brain at 1 day, 1, 2 and 3 months after modeling. Brain cavities were 3-dimensional y reconstructed by Mimics16.0 software, and analyzed in the Meshmixer software. RESULTS AND CONCLUSION:(1) The outline of reconstruction model image was clear, and could be observed and measured from different sides and perspectives. (2) The cavity volume and surface area at different time points after TBI showed significant differences between each other except that at 2 and 3 months (P<0.05). (3) The results of cavity change suggested that the cavity tended to be regular after 3 months of TBI. (4) In conclusion, 3D reconstruction software Mimics combining with model analysis software Meshmixer can conveniently and quickly obtain the cavity model, and provide an intuitive way for evaluating the dynamic variations of the brain cavity after TBI.